Taxing Wages...of such data by the OECD is without prejudice to the status of the Golan Heights,...

Taxing Wages2010-2011

SPECIAL FEATURE: TRENDS IN PERSONAL INCOME TAX AND SOCIAL SECURITY CONTRIBUTION SCHEDULES

2011

Taxing Wages 2011

SPECIAL FEATURE: TRENDS IN PERSONAL INCOME TAX AND EMPLOYEE SOCIAL SECURITY

CONTRIBUTION SCHEDULES

This work is published on the responsibility of the Secretary-General of the OECD. The

opinions expressed and arguments employed herein do not necessarily reflect the official

views of the Organisation or of the governments of its member countries.

This document and any map included herein are without prejudice to the status of or

sovereignty over any territory, to the delimitation of international frontiers and boundaries

and to the name of any territory, city or area.

ISBN 978-92-64-17327-9 (print)ISBN 978-92-64-17328-6 (PDF)

Series/Periodical:ISSN 1995-3844 (print)ISSN 2072-5124 (online)

The statistical data for Israel are supplied by and under the responsibility of the relevant Israeli authorities. The useof such data by the OECD is without prejudice to the status of the Golan Heights, East Jerusalem and Israelisettlements in the West Bank under the terms of international law.

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FOREWORD

Foreword

This annual publication provides details of taxes paid on wages in all thirty-four Member countries ofthe OECD.* The information contained in the Report covers the personal income tax and social security

contributions paid by employees, the social security contributions and payroll taxes paid by their employers

and cash benefits received by families. The objective of the Report is to illustrate how personal income

taxes, social security contributions and payroll taxes are calculated and to examine how these levies and

cash family benefits impact on net household incomes. The results also allow quantitative cross-country

comparisons of labour cost levels and of the overall tax and benefit position of single persons and families.

The Report shows the amounts of taxes, social security contributions, payroll taxes and cash

benefits for eight family-types, which differ by income level and household composition. It also

presents the resulting average and marginal tax rates. Average tax rates show that part of gross

wage earnings or total labour costs which is taken in tax (before and after cash benefits), social

security contributions and payroll taxes. Marginal tax rates show the part of an increase of gross

earnings or total labour costs that is paid in these levies.

The focus of the Report is the presentation of accurate estimates of the tax/benefit position of

employees in the edition year (2011). In addition, the Report shows definitive data on the tax/benefit

position of employees for the year 2010. It is important to note that, starting from the Report’s edition

in 2005, the definition of the average worker has been broadened from average manual production

worker (ISIC Sector D) to average worker (ISIC Rev. 3.1 Sectors C to K or ISIC Rev. 4 Sectors B to N)

including both manual and non-manual workers.**

The Report is structured as follows. The Overview at the beginning of the Report reviews the main

results for 2011. Part I of the Report (International Comparisons) reviews the main results for 2011

and 2010 and is divided into three sections. The first section reviews the main results for 2011, which

are summarised in comparative tables and figures included at the end of that section. The second

section presents a graphical exposition of the estimated tax burden on labour income in 2011 for gross

wage earnings between 50 per cent and 250 per cent of the average wage. The third section reviews the

main results for 2010, which are summarized in the comparative tables at the end of that section and

compares them with the 2011 figures. Part II of the Report focuses on the historical trends in the tax

burden for the period 2000-11. Country tables specifying the wage levels considered and the associated

tax burdens for eight separate family types are found in Part III, together with descriptions of the tax/

benefit system of each country. The methodology used – and its limitations – are set out in Part IV.

The Report has been prepared under the auspices of the Working Party on Tax Policy Analysis

and Tax Statistics of the Committee on Fiscal Affairs and has benefited from financial support

provided by the Commission of the European Communities. It is published on the responsibility of the

Secretary-General of the OECD.

* Previous editions were published under the title The Tax/Benefit Position of Employees(1996-98 editions) and The Tax/Benefit Position of Production Workers (editions published before 1996).

** Annex C presents historical series using the old definition of the average production worker (1979-2004).

TAXING WAGES 2011 © OECD 2012 3

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TABLE OF CONTENTS

Table of contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2. Review of results for 2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Special Feature: Trends in personal income tax and employee social securitycontribution schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2. Description of personal income tax schedules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3. Income thresholds associated with the top and bottom statutory tax rates. . . . . . . 48

4. Statutory personal income tax schedules in relation to marginal and average

tax rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5. Employee social security contribution schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

6. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Annex. Statutory, marginal and average personal income tax rate schedules . . . . . . . . 67

Part I

INTERNATIONAL COMPARISONS

Tax burdens, 2011 estimates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78I.1. Income tax plus employee and employer contributions less cash benefits, 2011

Table. As % of labour costs, by family-type and wage level . . . . . . . . . . . . . . . . . . . . . . 84

Figure. Income tax plus employee and employer contributions

less cash benefits, 2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

I.2. Income tax plus employee contributions, 2011

Table. As % of gross wage earnings, by family-type and wage level. . . . . . . . . . . 86

Figure. Income tax plus employee contributions, 2011. . . . . . . . . . . . . . . . . . . . . . . 87

I.3. Income tax plus employee contributions less cash benefits, 2011


Figure. Income tax plus employee contributions less cash benefits, 2011. . . . . . . 89

I.4. Income tax, by family-type and wage level, 2011

Table. As % of gross wage earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Figure. Income tax, by family-type, 2011. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

I.5. Employee contributions, 2011


Figure. Employee contributions, 2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93


TABLE OF CONTENTS

I.6. Marginal rate of income tax plus employee and employer contributions

less cash benefits, 2011

Table. As % of labour costs, by family-type and wage level . . . . . . . . . . . . . . . . . . . . . . 94

Figure. Marginal rate of income tax plus employee and employer contributions

less cash benefits, 2011. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

I.7. Marginal rate of income tax plus employee contributions less cash benefits, 2011

Table. As % of gross wage earnings, by family-type and wage level . . . . . . . . . . . . . . 96

Figure. Marginal rate of income tax plus employee contributions less cash

benefits, 2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

I.8. Increase in net income after an increase of 1 currency unit in gross wages, 2011

Table. By family-type and wage level (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

I.9. Increase in net income after an increase of 1 currency unit in gross labour cost, 2011

Table. By family-type and wage level (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

I.10. Annual gross wage and net income, 2011

Table. In US dollars using PPP, by family-type and wage level. . . . . . . . . . . . . . . . . . . . 100

I.11. Annual labour costs and net income, 2011

Table. In US dollars using PPP, by family-type and wage level . . . . . . . . . . . . . . . . . 102

Graphical exposition of the 2011 estimated tax burden . . . . . . . . . . . . . . . . . . . . . . . . . 104

Tax burdens, 2010 definitive results (and changes to 2011) . . . . . . . . . . . . . . . . . . . . . . 141

I.12. Income tax plus employee and employer contributions less cash benefits, 2010 . . . . 144

I.13. Income tax plus employee contributions, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

I.14. Income tax plus employee contributions less cash benefits, 2010 . . . . . . . . . . . . . 146

I.15. Income tax, by family-type and wage level, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

I.16. Employee contributions, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

I.17. Marginal rate of income tax plus employee and employer contributions

less cash benefits, 2010. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

I.18. Marginal rate of income tax plus employee contributions less cash

benefits, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

I.19. Increase in net income after an increase of 1 currency unit in gross

wages, 2010. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

I.20. Increase in net income after an increase of 1 currency unit in gross

labour cost, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

I.21. Annual gross wage and net income, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

I.22. Annual labour costs and net income, 2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Part II

TAX BURDEN TRENDS 2000-11

1. Historical trends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

2. Important trends. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

3. Tax wedge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

4. Average income tax rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

5. Net personal average tax rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

6. Progressivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

7. Families . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

TAXING WAGES 2011 © OECD 20126

TABLE OF CONTENTS

II.1a. Income tax plus employee and employer contributions less cash benefits,

single persons, 67% of average earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

II.1b. Income tax, single persons, 67% of average earnings . . . . . . . . . . . . . . . . . . . . . . . 164

II.1c. Income tax plus employee contributions less cash benefits, single persons,

67% of average earnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165


single persons, 100% of average earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

II.2b. Income tax, single persons, 100% of average earnings . . . . . . . . . . . . . . . . . . . . . . 167

II.2c. Income tax plus employee contributions less cash benefits, single persons,

100% of average earnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168


single persons, 167% of average earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

II.3b. Income tax, single persons at 167% of average earnings . . . . . . . . . . . . . . . . . . . . 170

II.3c. Income tax plus employee contributions less cash benefits,

single persons at 167% of average earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171


single parent at 67% of average earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

II.4b. Income tax, single parent at 67% of average earnings. . . . . . . . . . . . . . . . . . . . . . . 173

II.4c. Income tax plus employee contributions less cash benefits, single parent

at 67% of average earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174


married couple at 100% of average earnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

II.5b. Income tax, married couple at 100% of average earnings. . . . . . . . . . . . . . . . . . . . 176


married couple at 100% of average earnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177


married couple at 100% and 33% of average earnings. . . . . . . . . . . . . . . . . . . . . . . 178

II.6b. Income tax, married couple at 100% and 33% of average earnings . . . . . . . . . . . . 179













II.9. Annual average gross wage earnings, single individual no children, 2000-11

(US dollars using PPP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

II.10. Annual average gross wage earnings, single individual no children, 2000-11

(national currency) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188


TABLE OF CONTENTS

Part III

COUNTRY DETAILS, 2011

Australia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Austria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Belgium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Chile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

Czech Republic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Denmark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257

Estonia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Finland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

France. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Germany. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297

Greece. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309

Hungary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321

Iceland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329

Ireland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339

Israel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349

Italy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359

Japan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369

Korea. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381

Luxembourg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391

Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401

Netherlands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411

New Zealand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425

Norway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433

Poland. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443

Portugal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453

Slovak Republic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465

Slovenia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 475

Spain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 485

Sweden. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495

Switzerland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505

Turkey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 519

United Kingdom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 527

United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 535


TABLE OF CONTENTS

Part IV

Methodology and limitations

Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5461. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 546

2. Calculation of gross wage earnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 546

3. Estimating gross wage earnings in 2011. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550

4. Coverage of taxes and benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554

5. Taxpayer characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 555

6. Calculation of personal income taxes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 555

7. State and local income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 556

8. Social security contributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 556

9. Payroll taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 557

10. Church tax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 558

11. Family cash benefits from general government . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 558

12. Payable tax credits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 558

13. The calculation of marginal tax rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 559

Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5611. General limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 561

2. Some specific limitations on the income tax calculation . . . . . . . . . . . . . . . . . . . . . . 562

3. Limitations to time-series comparisons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 562

A note on the tax equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 564

Annex A. Source of earnings data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 568

Annex B. Exchange rates and purchasing power parities of national currencies, 2011 . . . . . 570

Annex C. Historical series under the old definition of average worker, 1979-2004 . . . . . 571


Taxing Wages 2011

Special Feature: Trends in personal income tax

and employee social security contribution schedules

© OECD 2012

Overview

This Report provides unique information for each of the OECD countries on the incometaxes paid by workers, their social security contributions, the family benefits they receive

in the form of cash transfers as well as the social security contributions and payroll taxes

paid by their employers. Results reported include the marginal and average tax burden for

one- and two-earner households, and the implied total labour costs for employers. These

data are widely used in academic research and in the formulation and evaluation of social

and economic policies. The taxpayer specific detail in this Report enables it to complement

the information provided annually in the Revenue Statistics, a publication providing

internationally comparative data on tax levels and tax structures in the thirty-four Member

countries. The methodology followed in this Report is set out briefly in the introduction

section below and described in more detail in Part IV.

The present edition provides estimates of tax burdens and of the tax “wedge” between

labour costs and net take-home pay for eight illustrative family types on comparable levels

of income. The key results for 2011 are summarised in Section 2 below. Part I of the Report

presents more detailed results for 2011, together with definitive results for 2010 and

discusses the changes between the two years. Part II of the Report reviews historical

changes in tax burdens between 2000 and 2011.

1. IntroductionThis section briefly introduces the methodology employed for this Report, which

focuses on employees. It is assumed that their annual income from employment is equal

to a given ratio of the average full-time adult gross wage earnings for each OECD economy,

also referred to as the average wage (AW). This covers both manual and non-manual

workers for either industry Sectors C-K inclusive with reference to the International

Standard Industrial Classification of All Economic Activities, Revision 3 (ISIC Rev. 3) or

industry Sectors B-N inclusive with reference to the International Standard Industrial

Classification of All Economic Activities, Revision 4 (ISIC Rev. 4)1. Further details are

provided in Table 0.6 as well as in Part IV of this Report. Additional assumptions are made

regarding other relevant personal circumstances of these wage earners in order to

determine their tax/benefit position. The taxes included in the present Report are confined

to personal income tax, social security contributions and payroll taxes (which, in this

Report, are aggregated with employer social contributions in the calculation of tax rates)

payable on gross wage earnings. Consequently, any income tax that might be due on

non-wage income and other kinds of taxes – e.g. corporate income tax, net wealth tax and

consumption taxes – are not taken into account. The benefits included are those paid by

general government as cash transfers, usually in respect of dependent children.

11

OVERVIEW

Prior to the 2004-05 edition of this Report, these calculations were based on the

narrower concept of average full time wages of manual workers in the manufacturing

sector, referred to as the average production worker (APW). Moving to the new definition

has involved a break in the time series for the earnings measure, and for the corresponding

Taxing Wages tax rate results. However, this Report does include historical figures for the

new average worker definition from 2000. For Turkey, the gross wage earnings of the

average worker under the new AW wage definition are not available and therefore, the

figures continue to be based on the old APW wage definition.

For most OECD countries, the tax year is equivalent to the calendar year, the

exceptions being Australia, New Zealand and the United Kingdom. In the case of

New Zealand and the United Kingdom, where the tax year starts in April, the calculations

apply a “forward looking” approach. This implies that, for example, the tax rates reported

for 2011 are those for the fiscal year 2011-12. However, in Australia, where the tax year

starts in July, it has been decided to take a “backward looking” approach in order to present

more reliable results. So, for example, the year 2011 in respect of Australia has been

defined to mean its fiscal year 2010-11.

This Report contains several measures of taxation on labour. Most emphasis is given

to the tax wedge – a measure of the difference between labour costs to the employer and

the corresponding net take-home pay of the employee – which is calculated by expressing

the sum of personal income tax, employee plus employer social security contributions

together with any payroll tax, minus benefits as a percentage of labour costs. Employer

social security contributions and – in some countries – payroll taxes are added to gross

wage earnings of employees in order to determine a measure of total labour costs. Of

course, it should be recognised that this measure may be less than the true labour costs

faced by employers because, for example, employers may also have to make non-tax

compulsory payments. The average tax wedge measures identify that part of total labour

costs which is taken in tax and social security contributions net of cash benefits. In

contrast, the marginal tax wedge measures identify the part of an increase of total labour

costs that is paid in these levies.

In addition, there is a focus on the personal average tax rate in the calculations. The

net personal average tax rate is the term used when the personal income tax and employee

social security contributions net of cash benefits are expressed as a percentage of gross

wage earnings. The net personal marginal tax rate shows the part of an increase of gross

wage earnings that is paid in personal income tax and employee social security

contributions net of cash benefits.

2. Review of results for 2011

2.1. Tax wedge

Table 0.1 shows that the tax wedge between total labour costs to the employer and the

corresponding net take-home pay for single workers without children, at average earnings

levels, varied widely across OECD countries in 2011 (see column 1). While in Belgium,

Germany, Hungary and France, the tax wedge rates are around 50% or higher, they are

under 20% in Chile, Israel, Mexico and New Zealand. The highest tax wedge rate is

observed in Belgium (55.5%) and the lowest in Chile (7%).


OVERVIEW

The changes in tax wedge rates between 2010 and 2011 for an average worker without

children are described in column 2 of Table 0.1. The tax wedges increased in twenty-six

countries and fell in seven. The largest increase was in Hungary (2.77 percentage points).

New Zealand (–1.12 percentage point) was the only country with a decrease of more than

one percentage point.

In general, the rises in tax wedge rates are driven by higher income taxes (see

column 3). This was the major factor in eighteen of the countries showing an overall

increase. The largest increases in income taxes as a percentage of labour costs were in

Ireland (3.82 percentage points) where more than half of the increase was offset by a

reduction in employee social security contributions and Hungary (2.4 percentage points).

In New Zealand the whole of the 1 percentage point fall is attributed to income taxes. By

contrast, higher employee and employer social security contributions account for virtually

all of the increased tax wedge in Germany, Japan, Korea, Luxembourg and Norway. In the

United States, where the overall tax wedge fell by 0.9 percentage points, a rise in income

tax was offset by a decrease in employee social security contributions.

Table 0.2 and Figure 0.1 show the constituent components of the tax wedge, i.e. income

tax, employee and employer social security contributions, for 2011, as a percentage of

labour costs for a single individual without children on average earnings. The labour costs

in Table 0.2 are expressed in terms of dollars with equivalent purchasing power. Figure 0.1

shows that the average tax wedge in OECD countries is 35.3 per cent.

The percentage of labour costs paid in income tax varies considerably within OECD

countries. The lowest figures are in Chile (zero), Greece (3%) Korea (3.9%), and Mexico

(4.4%). The highest values are in Denmark (28%), with Australia, Belgium and Iceland all

between 21 and 26%. The percentage of labour costs paid in employee social security

contributions also varies widely ranging from zero in Australia and New Zealand to 17.4%

in Germany and 19% in Slovenia. Employers in France pay 29.7 per cent of total labour costs

in social security contributions (including payroll taxes), the highest amongst OECD

countries. These contributions are also more than 20 per cent of labour costs in ten other

countries – Austria, Belgium, Czech Republic, Estonia, Greece, Hungary, Italy, Slovak Republic,

Spain and Sweden.

As a percentage of labour costs, the total of employee and employer social security

contributions exceeds 20 per cent in more than half of the OECD countries. It also exceeds

one-third of total labour costs in seven OECD countries: Austria, Belgium, the

Czech Republic, France, Germany, Greece and Hungary.

2.2. Personal average tax rates

The personal average tax rate is defined as income tax plus employee social security

contributions as a percentage of gross wage earnings.2 Table 0.3 and Figure 0.2 show the

personal average tax rates for a single worker without children at the average earnings

level in 2011. The gross wage earnings figures in Table 0.3 are expressed in terms of dollars

with equivalent purchasing power. Figure 0.2 provides a graphical representation of the

personal average tax rate decomposed between income tax and employee social security

contributions.


OVERVIEW

Table 0.1. Comparison of total tax wedgeAs % of labour costs1

Country2Total tax wedge 2011

Annual change 2011/10 (in percentage points)

Tax wedge Income tax Employee SSC Employer SSC

(1) (2) (3) (4) (5)

Belgium 55.5 0.16 0.04 –0.01 0.13

Germany 49.8 0.59 0.04 0.28 0.28

Hungary 49.4 2.77 2.39 0.39 0.00

France 49.4 0.03 0.04 –0.01 0.00

Austria 48.4 0.24 0.24 0.00 0.00

Italy 47.6 0.44 0.44 0.00 0.00

Sweden 42.8 0.04 0.05 0.00 0.00

Finland 42.7 0.24 0.08 0.03 0.13

Slovenia 42.6 0.11 0.11 0.00 0.00

Czech Republic 42.5 0.38 0.38 0.00 0.00

Estonia 40.1 0.09 0.09 0.00 0.00

Spain 39.9 0.14 0.14 0.00 0.00

Portugal 39.0 1.38 1.38 0.00 0.00

Slovak Republic 38.9 0.95 0.95 0.00 0.00

Denmark 38.4 0.09 0.08 0.00 0.00

Greece 38.0 –0.20 –0.85 0.34 0.30

Netherlands 37.8 –0.34 –0.14 0.01 –0.21

Turkey 37.7 –0.16 –0.16 0.00 0.00

Norway 37.5 0.25 0.03 –0.02 0.24

Luxembourg 36.0 1.65 0.29 0.72 0.64

Poland 34.3 0.12 0.12 0.00 0.00

Iceland 34.0 0.63 0.63 0.00 0.00

United Kingdom 32.5 –0.08 –0.56 0.25 0.23

Canada 30.8 0.33 0.19 0.00 0.14

Japan 30.8 0.58 –0.09 0.33 0.34

United States 29.5 –0.93 0.93 –1.82 –0.04

Ireland 26.8 0.95 3.82 –2.87 0.00

Australia 26.7 –0.18 0.04 0.00 –0.22

Switzerland 21.0 0.27 0.10 0.09 0.09

Korea 20.3 0.20 –0.22 0.23 0.19

Israel 19.8 0.41 0.32 0.05 0.03

Mexico 16.2 0.62 0.59 0.00 0.04

New Zealand 15.9 –1.12 –1.12 0.00 0.00

Chile 7.0 0.00 0.00 0.00 0.00

1. Single individual without children at the income level of the average worker.2. Countries ranked by decreasing labour costs.Sources: Country submissions, OECD Economic Outlook Volume 2011 (No. 90).

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OVERVIEW

Table 0.2. Income tax plus employee and employer social security contributionsAs % of labour costs, 20111

Country2Total tax wedge3 Income tax

Social security contributionsLabour costs4

Employee Employer

(1) (2) (3) (4) (5)

Germany 49.8 15.9 17.4 16.5 65 788

Belgium 55.5 21.7 10.8 23.1 64 169

Netherlands 37.8 14.5 14.0 9.2 60 765

Luxembourg 36.0 13.3 11.7 11.0 60 063

Austria 48.4 11.9 14.0 22.6 59 671

France 49.4 10.0 9.6 29.7 58 862

United Kingdom 32.5 14.1 8.5 9.9 57 711

Norway 37.5 19.0 6.9 11.6 57 278

Sweden 42.8 13.6 5.3 23.9 55 351

Switzerland 21.0 9.4 5.8 5.8 54 919

Finland 42.7 18.5 5.8 18.4 53 652

United States 29.5 15.7 5.2 8.7 51 255

Japan 30.8 6.6 11.7 12.4 51 089

Denmark 38.7 28.0 10.7 0.0 48 994

Korea 20.3 3.9 7.3 9.2 48 370

Italy 47.6 16.1 7.2 24.3 48 025

Australia 26.7 21.0 0.0 5.6 47 530

Spain 39.9 12.0 4.9 23.0 46 151

Iceland 34.0 25.6 0.5 8.0 44 011

Ireland 26.8 13.5 3.6 9.7 43 442

Canada 30.8 13.9 6.5 10.5 41 939

Portugal 39.0 10.9 8.9 19.2 34 446

Israel 19.8 8.0 7.4 4.5 33 594

New Zealand 15.9 15.9 0.0 0.0 32 426

Slovenia 42.6 9.7 19.0 13.9 32 018

Greece 38.0 3.0 12.8 22.2 28 579

Czech Republic 42.5 8.9 8.2 25.4 27 963

Hungary 49.4 13.6 13.6 22.2 25 960

Turkey 37.7 10.7 12.9 14.2 25 323

Estonia 40.1 12.5 2.1 25.6 25 051

Poland 34.3 5.9 15.5 12.9 23 607

Slovak Republic 38.9 7.5 10.6 20.8 23 460

Chile 7.0 0.0 7.0 0.0 14 530

Mexico 16.2 4.4 1.2 10.5 12 337

1. Single individual without children at the income level of the average worker.2. Countries ranked by decreasing labour costs.3. Due to rounding total may differ one percentage point from aggregate of columns for income tax and social

security contributions.4. Includes payroll taxes where applicable.5. Dollars with equal purchasing power.Sources: Country submissions, OECD Economic Outlook Volume 2011 (No. 90).

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OVERVIEW


Figure 0.1. Income tax plus employee and employer social security contributions As % of labour costs, 20111, 2

1. Single individual without children at the income level of the average worker.2. Includes payroll taxes where applicable.

1 2 http://dx.doi.org/10.1787/888932586713

0 10 20 30 40 50 60

Belgium

Germany

Hungary

France

Austria

Italy

Sweden

Finland

Slovenia

Czech Republic

Estonia

Spain

Portugal

Slovak Republic

Denmark

Greece

Netherlands

Turkey

Norway

OECD(35.3%)

Luxembourg

Poland

Iceland

United Kingdom

Canada

Japan

United States

Ireland

Australia

Switzerland

Korea

Israel

Mexico

New Zealand

Chile

Income tax Employee SSC Employer SSC

http://dx.doi.org/10.1787/888932586713

OVERVIEW

Figure 0.2 shows that on average, the personal average tax rate in OECD countries is

25%. Belgium at 42.2% of gross earnings has the highest rate with Denmark and Germany

being the only other countries with rates of more than 35%. Chile and Mexico have the

lowest personal average tax rates with 7.0 and 6.3% of gross average earnings respectively.

Korea is the only other country with a rate of less than 15%.

The impact of taxes and benefits on worker’s take-home pay varies greatly among

OECD countries. Such wide variations in the size and make-up of tax wedges reflect in part

differences in:

● the overall ratio of aggregate tax revenues to Gross Domestic Product; and

● the share of personal income tax and social security contributions in national tax mixes.

The mix of taxes paid out of gross wage earnings also varies greatly between countries

as illustrated in Figure 0.2.

In 2011, the share of income tax within the personal average tax rate is more

important than the share of the employee social security contributions for 23 of 34 OECD

Member countries. No employee social security contributions are levied in Australia and

New Zealand and the rates are comparatively small in Estonia, Iceland and Mexico. In

contrast, the single worker at the average wage level paid substantially more employee

social security contributions than personal income tax in seven countries – Greece, Japan,

Korea, Poland, Slovak Republic and Slovenia plus Chile, where the average worker did not

pay personal income tax in 2011. In 10 countries – Austria, Czech Republic, France,

Germany, Hungary, Israel, Luxembourg, the Netherlands, Portugal and Turkey the income

tax and employee social security contributions as percentages of gross earnings are almost

equivalent (differences of less than 3 percentage points).

2.3. Family tax rates

Table 0.4 compares the tax wedges for a one-earner married couple with two children

and a single individual without children, at average earnings levels. These tax wedges

varied widely across OECD countries in 2011 (see columns 1 and 2). The size of the tax

wedge for the family is generally lower than the one observed for the individual without

children, since many OECD countries provide a fiscal benefit to families with children

through advantageous tax treatment and/or cash transfers.

The savings realised by a one-earner married couple compared to a single worker are

greater than 20 per cent of labour costs in the Czech Republic and Luxembourg and greater

than 15 per cent of labour costs in six other countries – Belgium, Germany, Hungary,

Ireland, New Zealand and Slovenia. The tax burdens are the same in Chile and Mexico and

different by less than two percentage points in Greece and Turkey (see columns 1 and 2).

In 27 of 34 OECD countries, the change in the tax wedge of an average one-earner

married couple with two children between 2010 and 2011 does not exceed plus or minus

one percentage point (see column 3). There are increases of greater than 1 percentage

point in six countries – Ireland (2.4), Portugal (2.3), Slovak Republic (2.1), Iceland (1.9),

Luxembourg (1.8) and Germany (1.1). The tax wedge fell by 3.9 percentage points in

Hungary. In 2011, the tax wedge of families decreased in also six other countries: Greece,

Netherlands, New Zealand, Turkey, United Kingdom and United States. The change in the

tax wedge of a single taxpayer without children at the average wage level was greater than

one percentage point in 4 OECD countries. Detailed explanations on the latter are given in

the above Section 2.1.


OVERVIEW

Table 0.3. Income tax plus employee social security contributions, 20111

As% of gross wage earnings

Country2Total payment3 Income tax Social security contributions Gross wage earnings4

(1) (2) (3) (4)

Netherlands 31.4 16.0 15.4 55 165

Germany 39.9 19.0 20.9 54 949

Luxembourg 28.1 15.0 13.1 53 480

United Kingdom 25.1 15.6 9.5 52 013

Switzerland 16.1 10.0 6.2 51 738

Norway 29.3 21.5 7.8 50 644

Belgium 42.2 28.2 14.0 49 351

Denmark 38.7 28.0 10.7 48 994

United States 22.8 17.2 5.7 46 800

Austria 33.4 15.3 18.1 46 211

Australia 22.3 22.3 0.0 44 853

Japan 21.0 7.6 13.4 44 738

Korea 12.3 4.3 8.1 43 943

Finland 29.8 22.7 7.2 43 798

Sweden 24.8 17.8 7.0 42 118

France 28.0 14.3 13.7 41 361

Iceland 28.3 27.8 0.5 40 507

Ireland 18.9 14.9 4.0 39 226

Canada 22.7 15.5 7.3 37 549

Italy 30.8 21.3 9.5 36 361

Spain 21.9 15.6 6.4 35 528

New Zealand 15.9 15.9 0.0 32 426

Israel 16.1 8.4 7.7 32 098

Portugal 24.5 13.5 11.0 27 836

Slovenia 33.4 11.3 22.1 27 578

Greece 20.3 3.8 16.5 22 230

Turkey 27.4 12.4 15.0 21 736

Czech Republic 23.0 12.0 11.0 20 868

Poland 24.6 6.8 17.8 20 567

Hungary 35.0 17.5 17.5 20 202

Estonia 19.6 16.8 2.8 18 639

Slovak Republic 22.9 9.5 13.4 18 589

Chile 7.0 0.0 7.0 14 530

Mexico 6.3 4.9 1.4 11 035

1. Single individual without children at the income level of the average worker.2. Countries ranked by decreasing gross wage earnings.3. Due to rounding total may differ one percentage point from aggregate of columns for income tax and social

security contributions.4. Dollars with equal purchasing power.Sources: Country submissions, OECD Economic Outlook Volume 2011 (No. 90).

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OVERVIEW


Figure 0.2. Percentage of gross wage earnings paid in income tax and employee social security contributions, 20111, 2

1. Countries ranked by decreasing tax burden.2. Single individuals without children at the income level of the average worker.

1 2 http://dx.doi.org/10.1787/888932586732

0 10 155 20 25 30 35 40 45%

Belgium

Germany

Denmark

Hungary

Slovenia

Austria

Netherlands

Italy

Finland

Norway

Iceland

Luxembourg

France

Turkey

United Kingdom

Slovak Republic

OECD(25%)

Poland

Portugal

Sweden

Czech Republic

United States

Canada

Australia

Spain

Japan

Greece

Estonia

Ireland

Switzerland

Israel

New Zealand

Korea

Chile

Mexico

Income tax Social security contributions

http://dx.doi.org/10.1787/888932586732

OVERVIEW

A comparison of the changes in tax wedges between 2010 and 2011 between

one-earner married couples with two children and single persons without children, at the

average wage level, is shown in column 5 of Table 0.4. The fiscal preference for families

increased in six OECD Member countries: Greece, Hungary, Israel, Korea, Poland and

Turkey. Additionally, the effects of changes in the tax system on the tax wedge were

independent of the family type in Mexico, Switzerland and United Kingdom.

Figure 0.3 compares the net personal average tax rate for the average worker between

single individuals and a one-earner married couple with two children. These results show

Table 0.4. Comparison of total tax wedge by family typeAs % of labour costs

Country1Family2 total

tax wedge 2011Single3 total

tax wedge 2011

Annual change 2011/10 (in percentage points)

Family tax wedge Single tax wedgeDifference between single and family

(4)-(3)4

(1) (2) (3) (4) (5)

France 42.3 49.4 0.1 0.0 –0.1Belgium 40.3 55.5 0.4 0.2 –0.3Italy 38.6 47.6 0.8 0.4 –0.4Greece 37.8 38.0 –0.7 –0.2 0.5Finland 37.7 42.7 0.4 0.2 –0.2Sweden 37.3 42.8 0.2 0.0 –0.1Austria 37.1 48.4 0.6 0.2 –0.4Turkey 36.3 37.7 –0.2 –0.2 0.1Spain 34.2 39.9 0.2 0.1 –0.1Germany 34.0 49.8 1.1 0.6 –0.5Hungary 32.8 49.4 –3.9 2.8 6.7Estonia 31.2 40.1 0.4 0.1 –0.3Norway 31.0 37.5 0.4 0.2 –0.2Netherlands 30.7 37.8 –0.2 –0.3 –0.2Portugal 29.2 39.0 2.3 1.4 –1.0Poland 28.4 34.3 0.0 0.1 0.1Denmark 27.4 38.4 0.3 0.1 –0.2United Kingdom 26.4 32.5 –0.1 –0.1 0.0Slovak Republic 25.0 38.9 2.1 1.0 –1.2Slovenia 23.2 42.6 0.3 0.1 –0.2Japan 23.0 30.8 1.0 0.6 –0.4Czech Republic 21.7 42.5 0.6 0.4 –0.3Iceland 21.0 34.0 1.9 0.6 –1.2Canada 18.9 30.8 0.8 0.3 –0.5United States 18.2 29.5 –0.1 –0.9 –0.9Korea 17.9 20.3 0.1 0.2 0.1Mexico 16.2 16.2 0.6 0.6 0.0Israel 16.0 19.8 0.1 0.4 0.3Australia 15.2 26.7 0.6 –0.2 –0.8Luxembourg 13.4 36.0 1.8 1.7 –0.1Switzerland 8.4 21.0 0.2 0.3 0.0Ireland 7.1 26.8 2.4 0.9 –1.4Chile 7.0 7.0 0.7 0.0 –0.7New Zealand –1.2 15.9 –0.3 –1.1 –0.8

1. Countries ranked by decreasing tax wedge of the family.2. One-earner married couple with two children and earnings at the average wage level.3. Single individual without children and earnings at the average wage level.4. Due to rounding total may differ one percentage point from the subtraction results of columns 4 and 3.Source: Country submissions, OECD Economic Outlook Volume 2011 (No. 90).

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OVERVIEW


Figure 0.3. Income tax plus employee contributions less cash benefits, by family-type

As % of gross wage earnings, 20111, 2

1. Countries ranked by decreasing rates for single taxpayer without children.2. Family types: a single individual without children and earnings at the average wage level and a one-earner

married couple with two children and earnings at the average wage level.1 2 http://dx.doi.org/10.1787/888932586751

-10 0-5 5 10 15 2520 30 35 40 45%

Belgium

Germany

Denmark

Hungary

Slovenia

Austria

Netherlands

Italy

Finland

Norway

Iceland

Luxembourg

France

Turkey

United Kingdom

Sweden

Poland

Portugal

Czech Republic

Slovak Republic

Canada

United States

Australia

Spain

Japan

Greece

Estonia

Ireland

Switzerland

Israel

New Zealand

Korea

Chile

Mexico

Single no child Married one-earner couple 2 children

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OVERVIEW

the same pattern as those for the tax wedge results. This is because employer social

security contributions which are not taken into account in the former but included in the

latter are independent of family type. The savings realised by a one-earner married couple

are equal to or greater than 20 per cent of earnings in five countries – the Czech Republic

(27.8%), Luxembourg (25.4%), Slovenia (22.6%), Ireland (21.8%) and Hungary (21.3%). In

contrast, the savings as percentage of gross earnings are less than 10 per cent of earnings

in twelve countries – Japan (8.9%), the Netherlands (7.8%), Spain (7.4%), Norway (7.3%),

Sweden (7.2%), Poland (6.8%), the United Kingdom (6.7%), Finland (6.1%), Israel (4.0%), Korea

(2.7%), Turkey (1.6%) and Greece (0.3%).The burden is the same in Chile and in Mexico. It is

also interesting to note that when cash benefits are taken into account, the tax burden

measure for one-earner married couples with two children becomes negative in the

Czech Republic, Ireland and New Zealand because cash benefits exceed the income tax

and social security payments.

2.4. Wages

Table 0.5 shows gross wage earnings of the average worker in each OECD Member

country for years 2010 (column 1) and 2011 (column 2). The gross average wage (AW)

earnings for 2011 are estimated by the OECD Secretariat by applying the figures for the

change in the compensation per private sector employee as presented in the OECD

Economic Outlook 90 database to the final average wage values provided by OECD Member

countries. More information on the values of the average wage and the estimation

methodology is included in Part IV.3 of this Report. The annual change of the nominal wage of

an average worker – shown in column 3 – varied between a decline of –23.1 per cent (Greece)

and an increase of 7.2 per cent in Chile3. To a large extent, the changes reflect the different

inflation levels of individual OECD countries – see column 4 of Table 0.5, although the

figure for Greece represents a decline in real wages as a result of the financial and

economic crisis. The annual change in real wage levels (before personal income tax and

employee social security contributions) is found to be in the –2.3 to +2.3 per cent range for

most countries; see column 5 of Table 0.5. Greece (–25.3 per cent), Korea (–6.3),

United Kingdom (–4.3 per cent), Chile (3.6 per cent) and Poland (2.7 per cent) show changes

in real wages before tax that are outside this range.

When comparing wage levels, it is important to note that the definition of average

wage earnings can vary between countries due to data limitations. For instance, the

average wage figure for some countries does not include the wages earned by supervisory

and managerial workers and not all countries exclude the wage earnings from part-time

workers. The methods adopted for calculating the average wage measure for each country

are described in details in Part IV of this Report (Table IV.3).

Table 0.6 provides more information on whether the average wages for the years 2000

to 2011 have been calculated for industry Sectors C-K inclusive with reference to the

International Standard Industrial Classification of All Economic Activities, Revision 3 (ISIC

Rev. 3) or industry Sectors B-N inclusive with reference to the International Standard

Industrial Classification of All Economic Activities, Revision 4 (ISIC Rev. 4).

Most OECD countries have calculated average wage earnings on the basis of sectors

B-N in the ISIC Rev. 4 Industry Classification since 2008 or 2009. Some countries have

revised the average wage values using the ISIC Rev. 4 Classification or any variant for prior

years as well. This is the case, for example, in Australia, the Czech Republic, Estonia,

Greece, Iceland, Italy, Japan, the Slovak Republic, Slovenia, Spain and Sweden. Australia


OVERVIEW

(for all years) and New Zealand (years 2004 to 2011) have provided values based on the 2006

ANZSIC industry classification, divisions B to N, which substantially overlaps the ISIC

Rev. 4, Sectors B to N. For New Zealand, the years prior 2004 continue to be based on sectors

C-K in ANZSIC. In general, the change in the industry classification has had only a small

impact on the level of the average wage earnings but the results reported in this Report for

the years before 2011 may slightly deviate from the values reported in last year’s edition on

this account.

In 2011, Statistics Austria delivered data on the average wage level according to the

ISIC classification from the year 2004 onwards. The figures for years 2004 to 2007 are based

Table 0.5. Comparison of wage levels

Country

Gross wage in national currency Annual change 2011/2010 (in percentage)

2010 2011 Gross wage Inflation1Real wage before tax

Change in personal average tax rate2

(1) (2) (3) (4) (5) (6)

Australia 66 724 69 903 4.8 3.5 1.2 0.0

Austria 38 504 39 263 2.0 3.5 –1.5 0.3

Belgium 41 499 42 740 3.0 3.4 –0.4 0.1

Canada 44 717 46 163 3.2 2.8 0.4 0.2

Chile 5 508 104 5 907 326 7.2 3.5 3.6 0.0

Czech Republic 287 320 290 481 1.1 1.7 –0.6 0.5

Denmark 376 073 382 850 1.8 2.7 –0.9 0.1

Estonia 9 580 9 916 3.5 5.1 –1.5 0.1

Finland 39 982 41 445 3.7 3.2 0.4 0.2

France 34 849 35 859 2.9 2.1 0.8 0.0

Germany 42 400 43 855 3.4 2.4 1.0 0.5

Greece 20 457 15 729 –23.1 3.0 –25.3 –0.6

Hungary 2 511 852 2 624 088 4.5 3.9 0.5 3.6

Iceland 5 256 000 5 577 213 6.1 4.0 2.0 0.7

Ireland 32 308 32 841 1.7 1.1 0.5 1.1

Israel 113 280 119 016 5.1 3.5 1.5 0.4

Italy 28 224 29 030 2.9 2.7 0.2 0.6

Japan 4 773 076 4 781 406 0.2 –0.3 0.5 0.4

Korea 36 929 183 36 154 826 –2.1 4.4 –6.3 0.0

Luxembourg 49 317 49 890 1.2 3.5 –2.3 1.3

Mexico 87 324 89 944 3.0 3.4 –0.4 0.7

Netherlands 45 215 45 904 1.5 2.5 –1.0 –0.2

New Zealand 48 007 49 395 2.9 4.2 –1.3 –1.1

Norway 469 247 487 324 3.9 1.5 2.3 0.1

Poland 36 121 38 557 6.7 4.0 2.7 0.1

Portugal 17 352 17 588 1.4 3.5 –2.0 1.7

Slovak Republic 9 325 9 658 3.6 4.1 –0.5 1.2

Slovenia 16 915 17 373 2.7 1.8 0.9 0.1

Spain 24 786 25 223 1.8 3.0 –1.2 0.2

Sweden 368 208 375 436 2.0 2.9 –0.9 0.1

Switzerland 75 331 77 414 2.8 0.4 2.3 0.2

Turkey 21 661 22 636 4.5 6.2 –1.6 –0.2

United Kingdom 34 297 34 286 0.0 4.5 –4.3 –0.3

United States 45 688 46 800 2.4 3.2 –0.8 1.0

1. Estimated percentage change in the total consumer price index.2. Difference in the personal average tax rate of the average worker (single without children) between 2011 and 2010.Sources: Country submissions, OECD Economic Outlook Volume 2011 (No. 90).

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OVERVIEW

on ISIC Rev. 3.1 (Sectors C to K) and those for subsequent the years on ISIC Rev. 4 (Sectors B

to N). These new figures eliminate some major sources of tax free income (e.g. surcharge

for overtime work), and income which is not modelled in the Taxing Wages calculations

(e.g. dismissal pay). Up to the 2010 edition of Taxing Wages, gross wages were actually

reduced by 2% in the calculation of taxable income in order to reflect an estimated amount

of the tax free income. There still continues to be some overestimation of taxable income

Table 0.6. Average Wage Industry Classification

Years for which ISIC Rev. 3.1 or any variant (Sectors C-K) has been used to calculate the AW

Years for which ISIC Rev. 4 or any variant (Sectors B-N) has been used to calculate the AW

Australia* 2000-11

Austria* 2004-07 2008-11

Belgium 2000-07 2008-11

Canada 2000-11

Chile 2000-11

Czech Republic 2000-11

Denmark 2000-07 2008-11

Estonia 2000-11

Finland 2000-07 2008-11

France 2000-07 2008-11

Germany 2000-05 2006-11

Greece 2000-11

Hungary n.a. n.a.

Iceland* 2000-11

Ireland* 2000-07 2008-11

Israel 2000-11

Italy 2000-11

Japan 2000-11

Korea 2000-08 2009-11

Luxembourg 2000-04 2005-11

Mexico*

Netherlands 2000-07 2008-11

New Zealand* 2000-03 2004-11

Norway 2000-08 2009-11

Poland 2000-07 2008-11

Portugal 2000-06 2007-11

Slovak Republic* 2000-11

Slovenia 2000-11

Spain 2000-11

Sweden 2000-11

Switzerland 2000-07 2008-11

Turkey*

United Kingdom 2000-06 2007-11

United States 2000-06 2007-11

* Australia: based on ANZSIC06 such that the categories subtantially overlap with ISIC 4, Sectors B-N.Austria: 2000-03 average wage values are not based on the NACE (ISIC) classification.Iceland: using the national classification system that corresponds with the NACE Rev. 2 classification system.Ireland: values from 2000 to 2007 are based on Sectors C-E. From 2008 onwards, they are based on Sectors B-E.Mexico: 2000-11 average wage values are based on an ISIC version prior to ISIC Rev. 3.1.New Zealand: see the note for Australia which applies from 2004.Slovak Republic: average wage values based on ISIC Rev. 4 classification (B to N) and include income fromself-employment.Turkey: the average wage is based on the average production worker wage ISIC Rev. 3.1 Sector D.

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OVERVIEW

in the new figures because the basic payments of overtime work (not the surcharge) are

still included.

In the current edition of Taxing Wages, the average wage figures for Ireland have been

amended for all the years from 2000 to 2010. The previous figures were based on an

earnings survey that has been discontinued by the Central Statistics Office in Ireland

because of concerns about the methodology. The new figures, which cover both full and

part-time workers, are based on NACE Rev. 1 sectors C to E for years 2000 to 2007 and on

NACE Rev. 2 Sectors B to E for 2008 and subsequent years. They are lower than the previous

values that were computed on the basis of full-time employees only and on sectors C to K

(NACE Rev. 1).

Notes

1. Not all national statistical agencies use ISIC Rev. 3 or Rev. 4 to classify industries. However, theStatistical Classification of Economic Activities in the European Community (NACE Rev. 1 or Rev. 2),the North American Industry Classification System (US NAICS 2002) and the Australian andNew Zealand Standard Industrial Classification (ANZSIC 2006) include a classification whichbroadly conforms either with industries C-K in ISIC Rev. 3 or industries B-N in ISIC Rev. 4.

2. In the Netherlands, a slightly different division is made between personal income taxes andemployee social security contributions as compared to the methodology applied in this Report.

3. The National Statistics Institute (INE) made important changes to the indexes related with labourin January 2010.


SPECIAL FEATURE: TRENDS IN PERSONAL INCOME TAX AND EMPLOYEE SOCIAL SECURITY CONTRIBUTION SCHEDULES

Special Feature: Trends in personal income tax and employee social security contribution schedules



1. IntroductionTaxes on labour income – including personal income taxes and social security

contributions – account for roughly one half of total tax revenue, on average, across OECD

countries. High reliance on labour income taxation often results in high tax burdens on

workers. Tax burdens can be measured with several alternative indicators, including

marginal and average personal tax rates. Marginal personal tax rates, which indicate the

tax payable on an additional currency unit of earnings, affect incentives to increase work

effort, to follow training or to look for a better-paid job. Average personal tax rates, which

indicate the share of gross earnings spent on taxes, may affect incentives to participate in

the labour market. Average personal tax rates that increase with income imply that the

amount of tax paid is related to an individual’s capacity to pay, and that the tax and benefit

system is progressive. Average and marginal personal tax rates on wage income are

determined by the interaction of provisions that define the tax base, statutory tax rates,

and tax credits that are deducted after the application of tax rates to the tax base. The

Taxing Wages series presents these and other key tax burden indicators annually for OECD

member countries. To shed light on the underlying differences in average and marginal

personal tax rates, this Special Feature takes a close look at statutory personal income tax

(PIT) rates, the income thresholds where PIT and employee social security contribution

(SSC) rates apply, and other statutory provisions that shape the average and marginal

personal tax burden on labour income.

While statutory tax rates are only one of the components that determine average and

marginal personal tax rates, they are of great importance for various reasons. First, given

that policymakers cannot directly adjust average and marginal tax rates, changes to

statutory rates are a powerful policy tool to indirectly change tax burdens and modify

incentives to work and build human capital. Second, while average and marginal tax rates

involve complex calculations that must rely on a variety of assumptions, statutory rates

are defined by legislation and do not require computation. As such, they can be easily

known by the general public. Third, due to their unambiguous nature, statutory rates, and

particularly top statutory PIT rates, are often cited as a relevant indicator of taxation in

international comparisons.

In conjunction with statutory rates, other elements of the tax system defined in the

legislation determine average and marginal personal tax rates. For example, lump sum or

tapered basic allowances reduce average tax rates for taxpayers who claim them and create

a positive relationship between average tax rates and income. Personal income surtaxes

are additional taxes on income that is already subject to tax; as such, they increase

marginal tax rates. Social security contributions sometimes reduce marginal personal

income tax rates when PIT relief is provided for them, but also increase the combined PIT

and employee SSC (“all-in”) marginal tax rates, affecting the progressivity of the tax system

as a whole. More generally, all tax reliefs that vary with income (such as in-work tax

credits) affect marginal (and average) personal income tax rates, creating a gap between



marginal and statutory tax rates, and all lump-sum reliefs (such as most basic personal

allowances) affect average personal income tax rates, contributing to the gap between

average and statutory tax rates.

Among the statutory provisions presented in this Special Feature, the most

well-defined trend across OECD countries has been towards a reduction in top statutory

PIT rates, inclusive of surtaxes and sub-central income taxes. In fact, the OECD-wide

average top statutory PIT rate decreased significantly in each of the last three decades,

from 1980 to 2010. This does not, however, imply that all countries have continuously

reduced their top rates – for example, six countries increased their top rate in 2010

signalling a trend reversal that continued in 2011 and 2012. From 2000 to 2010, top “all-in”

rates fell in most OECD countries along with top statutory PIT rates, though PIT rate cuts

were partly offset by increases in SSC rates or thresholds in some countries.

Other clear trends that emerged from 2000 to 2010 include a reduction in the income

threshold where the top statutory PIT rate applies (minimizing the impact of the top

statutory rate cuts), and a reduction in the statutory rate applicable at average wage

earnings (in line with the reduction in the average personal tax rate for average earnings).

In contrast, over the same time period, OECD countries diverged in their policies regarding

changes to the bottom statutory rate and the threshold where a single earner begins to pay

income tax, with little change observed in the corresponding OECD-wide averages.

During the 1980’s, the number of central-level statutory tax brackets strongly declined

in most of the 22 OECD countries for which data are available. However, this marked trend

has no longer been observed after 1990. Comparing 2000 to 2010, no clear trend emerges

either regarding the direction of changes in the number of central-level tax brackets. It

appears that changes in the number of tax brackets have been, with exceptions, not a

policy goal in itself but rather a tool to reduce or increase tax burdens, particularly at high

income levels. Indeed, the number of central level personal income tax brackets, the top

statutory PIT rate, and the income threshold at which this rate applies tended to move in

the same direction over the last decade.

This Special Feature is organized as follows: Section 2 describes the basic features of

PIT schedules in OECD countries in 2010 as well as trends since 2000 (or 1981, where

possible). The PIT features described are the number of statutory tax brackets and rates,

the top and bottom statutory rates, the statutory rate applicable to average earnings,

surtaxes and provisions that exempt from tax an initial portion of income. Statutory tax

rates in this report refer to effective statutory rates, that is, they take into account applicable

surtaxes or deductions for other income taxes paid. Section 2 provides context for the

statutory rates described in Section 2 by presenting the income level at which taxpayers

begin to pay income tax and the threshold at which they become subject to the top

statutory PIT rate. Section 4 discusses the difference between marginal, average and

statutory PIT rates, as well as changes from 2003 to 2010. These differences are described

graphically in the Annex. Section 5 describes the earnings level at which taxpayers begin or

stop paying employee SSC, and the impact of employee SSC rates on the top “all-in”

marginal personal tax rate. Section 6 concludes by summarizing the main trends described

in the previous sections. The data underlying the discussion and graphs in this Special

Feature are available electronically in spreadsheet format through the StatLink hyperlinks

beneath the Figures in this report.




2. Description of personal income tax schedules

2.1. Statutory personal income tax rates

2.1.1. Trends in the number of personal income tax brackets

By 2010, personal income tax schedules in OECD countries contained relatively few taxbrackets compared to the early 1980’s (See Figure S.1). In 1981 it was common for OECDcountries to have ten or more tax brackets and no OECD country had a single-rate PITstructure. Among the 22 OECD countries for which 1981 data is available, 5 of them hadmore than 20 (non-zero) income tax brackets – Italy (32), Spain (30), Mexico (27), Belgium(24) and Luxembourg (21) – and 9 other countries had 10 or more brackets – Japan (19),Sweden (18), the United States (16), Greece (15), Canada (13), France (12), Portugal (12),Austria (11) and the Netherlands (10). In contrast, by 2010, only 2 of the 34 OECD countrieshad 10 or more tax brackets – Luxembourg (16) and Switzerland (10) – and 3 countries hada single PIT rate – the Czech Republic, Estonia and the Slovak Republic.

The number of brackets decreased most significantly during the 1980’s. On averageacross OECD countries, there were 14 PIT brackets in 1981, falling to 6 by 1990. Theseaverages must be compared with caution as 1981 data are not available for four countriesincluded in the 1990 sample. Among the 22 OECD countries for which 1981 and 1990 dataare both available, 15 countries had fewer brackets in 1990 than in 1981, and only Australia,Luxembourg and Switzerland ended the decade with more tax brackets than in 1981.

The trend towards fewer PIT brackets decelerated in the 1990’s and was no longerobserved during the 2000’s. As a result, the average number of tax brackets in OECDcountries has remained fairly stable since the 1990’s.

Figure S.1. Number of central personal income tax brackets1, 2

1. Number of non-zero central government statutory income tax rates on different taxable income ranges. Zero-ratebrackets are excluded for comparability with countries with basic personal allowances or tax credits whicheffectively result in zero-tax rates on an initial range of income. In Germany, the PIT schedule is formula-based.Figures for Germany indicate the number of distinct formulas that apply to different income ranges. TheNorwegian and Swedish two-tiered surtaxes are treated as two additional tax brackets when applicable.

2. Countries are ranked by decreasing number of tax brackets in 2010.* In 1981 Italy had 32 non-zero central tax brackets.** 22-country average. The number of tax rates is not applicable in the Czech Republic, Estonia, Hungary, Poland, theSlovak Republic, Slovenia, and not available for Chile, Finland, Germany, Iceland, Korea and Turkey.*** 26-country average. The number of tax rates is not applicable in the Czech Republic, Estonia, Poland, theSlovak Republic, Slovenia, and not available for Chile, Korea and Turkey.

Source: OECD Tax Database Table I.1 (www.oecd.org/ctp/taxdatabase).1 2 http://dx.doi.org/10.1787/888932586770

30

25

20

15

10

5

0

1981 1990 2000 2010

LUX

CHE

MEX

GR

CPR

TCH

LIS

RU

SA JPN

BEL

ITA* FIN

TUR

ESP

FRA

KOR

AUS

NLD NZL

DEU

CAN

SVN

AUT

GBR IS

L

NO

R

POL

HU

N

DN

K

SWE

IRL

SVK

CZE

EST

1981 OECD average**

1990 OECD average***

2000, 2010 OECD average

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On average across OECD countries, there were five central PIT brackets in 2000, compared

to six in 1990. These averages must also be compared with caution, as 1990 data are not

available or applicable for eight OECD countries included in the 2000 sample (e.g. Eastern

European OECD member countries). Among the 26 OECD countries for which 1990 and 2000

data are available, 10 countries – Australia, Austria, France, Greece, Hungary, Ireland, Italy,

Luxembourg, Spain, Sweden – had fewer brackets in 2000 than in 1990, and 7 countries –

Finland, Iceland, Mexico, the Netherlands, New Zealand, the United Kingdom and the

United States – increased the number of tax brackets over the same period. The remaining

8 countries – Belgium, Canada, Denmark, Germany, Israel, Japan, Portugal, Norway and

Switzerland – had the same number of brackets at the beginning and end of the decade.

Comparing 2000 to 2010, no clear trend emerges. Roughly a third of OECD countries

reduced their number of tax brackets, one third kept them constant and just under one third

introduced new tax brackets. As a result, the average number of central PIT brackets across

OECD countries in 2010 remained at five, unchanged from 2000. Countries that eliminated tax

brackets did so mainly during the middle of the decade. In contrast, the addition of new tax

brackets is a more recent phenomenon corresponding to recent fiscal consolidation efforts.

Among countries that reduced their number of tax brackets, the Slovak Republic and the

Czech Republic implemented single-rate schedules in 2004 and 2008, respectively. Hungary

and Poland cut their number of brackets from three to two in 2005 and 2009, respectively.

France reduced its number of tax brackets from six to four in 2007. Several OECD countries

reduced their number of tax brackets twice during the decade. By 2010, Belgium had five

brackets after having eliminated a bracket in 2002 and then in 2003; Finland had four

brackets after eliminating one in 2001 and another one in 2007; Spain had four brackets after

eliminating one in 2003 and another one in 2007; Slovenia had three brackets after

eliminating two in 2005 and then one in 2007; and Turkey had four brackets after eliminating

one in 2005 and another one in 2006. Mexico decreased and increased its number of tax rates

five times during the decade, starting with 10 brackets in 2000 and ending with eight in 2010.

Among countries that introduced tax brackets during the 2000’s, Canada increased its

number of brackets from three to four in 2001 and the United States increased its number of

brackets from six to seven in the same year. Chile added a tax bracket in 2002, raising the

total to seven. Israel added two tax brackets in 2002, but only one of them remained in place

in 2003. Japan added two tax brackets in 2007, raising the total to six. Germany modified its

formula-based structure and introduced a fourth distinct formula, corresponding to a new

top statutory rate, in 2007. Greece, Iceland and Portugal added tax brackets in 2010 as part of

their fiscal consolidation strategies. Greece converted its three-bracket PIT structure into an

eight-bracket structure. Iceland moved from a single-rate structure to a three-bracket

structure, and Portugal introduced one additional tax bracket, raising the total to eight.

Australia, Estonia, Ireland, Italy, Korea, Luxembourg, the Netherlands, New Zealand,

Sweden, Switzerland and the UK had the same number of tax brackets in 2000 and in 2010.

This does not imply a lack of changes in the number of brackets over the past ten years. For

example, the UK reduced its number of brackets from three to two in 2008, but added a

third bracket again in 2010. New Zealand had four tax brackets every year during the

decade, except for 2008, when it had seven brackets.

While reductions in the number of tax brackets over the past decade have generally

been accompanied by reductions in top statutory PIT rates, there have been some

exceptions where the top rate did not change – namely Hungary and Slovenia in 2005, and




Turkey in 2006. Likewise, increases in the number of tax brackets tended to be

accompanied by increases in top statutory rates, though not always. Among countries that

increased their number of tax brackets from 2000 to 2010, Germany, Greece, Iceland, Japan

and Portugal increased their top statutory rates when introducing new brackets. In

contrast, Chile and the United States reduced their top statutory rate when they added tax

brackets, and Canada held its top rate constant.

2.1.2. Trends in top statutory personal income tax rates

Along with a general reduction in the number of tax brackets over the last three

decades, OECD countries have seen a general reduction in their top statutory PIT rates. Like

with the number of tax brackets, the reduction in top statutory PIT rates was most

pronounced during the 1980’s. Across OECD countries for which data are available, the

average combined central and sub-central top statutory rate (including surtaxes and taking

into account the deductibility of sub-central or other income taxes from the central tax

base) declined by more than 15 percentage points, from 65.7% in 1981 to 50.6% in 1990. But

unlike the number of tax brackets, top statutory rates have continued to display a

pronounced declining trend well after the 1980’s. The average top statutory rate across

OECD countries declined by about four percentage points in the 1990’s (to 46.5% in 2000),

and then by almost five percentage points in the 2000’s (to 41.7% in 2010; see Figure S.2).

Changes in the average top rate across OECD countries must be interpreted with caution

because rates are not available or applicable for ten countries in 1981 and for seven

countries in 1990. However, if these countries were excluded from the analysis, the top rate

would still display a declining trend (see Table S.1).

Figure S.2. Top combined statutory personal income tax rate1, 2

1. The sum of the central and sub-central top rates in PIT rate schedule, inclusive of surtaxes and adjusted for thedeductibility of sub-central or other income taxes from the central tax base where applicable.

2. Countries are ranked by decreasing top statutory rates in 2010.* 24-country average. The top rate is not applicable in the Czech Republic, Estonia, Hungary, Poland, theSlovak Republic, Slovenia, and not available for Chile, Iceland, Korea and Turkey.** 27-country average. The top rate is not applicable in the Czech Republic, Estonia, Poland, the Slovak Republic,Slovenia, and not available for Chile and Korea.Source: OECD Tax Database Tables I.1, I.2 and I.3 (www.oecd.org/ctp/taxdatabase).

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100%

90

80

70

60

50

40

30

20

10

0

1981 1990 2000 2010

SWE

BEL

DN

KN

LD AUT

JPN

GBR FI

ND

EU IRL

AUS

CAN

ISL

PRT

FRA

ITA

ISR

GR

CES

PU

SA CHE

SVN

NO

RCH

LLU

XKO

RTU

RN

ZLH

UN

POL

MEX ES

TSV

KCZ

E

1981 OECD average*65.7%

1990 OECD average**50.6%

2010 OECD average41.7%

2000 OECD average46.5%

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Relative to 2000, five countries had higher top statutory PIT rates by 2010 – Iceland,

Ireland, Portugal, Sweden and the UK. Three countries – Austria, Greece and Japan – had

identical top rates at the beginning and end of the decade. The remaining 26 OECD countries

had lower top statutory rates by the end of the decade. The largest decline in the top

statutory rate over the past ten years was observed in the Slovak Republic, where the top rate

of 42% in 2000 declined to 38% in 2002, and then to 19% in 2004 when the country moved to

a single-rate PIT structure. The Czech Republic also drastically reduced its top statutory rate,

from 32% to 15%, when it adopted a single-rate PIT schedule and broadened the tax base

in 2008. In France, the top statutory rate (including the universal social contribution and the

contribution to the reimbursement of social debt) decreased by more than 12 percentage

points, from 58.27% in 2000 to 45.78% in 2010. In Mexico, although the top statutory rate of

30% is now lower than it was in 2000 (40%), it was temporarily raised from 28% as a fiscal

consolidation measure in 2010.

The largest increase in the top statutory rate was observed in the United Kingdom,

where the top rate was raised from 40% to 50% in 2010 as a fiscal consolidation measure.

Prior to 2010, the top rate in the UK had not been higher than 40% since 1987. However, the

income threshold at which the 50% rate applies (i.e. gross earnings of 4.3 times the average

wage) is considerably higher than the threshold where the top rate of 40% previously applied

(1.3 times the average wage), which highlights the difficulties in drawing conclusions about

tax burdens and the impacts of taxation on incentives by focusing merely on statutory tax

rates. Indeed, the threshold at which the top rate begins to apply changed in real earnings

terms in most OECD countries over the last decade, as will be discussed in Section 3.1.

The trend towards lower top statutory rates from 2000 to 2010 is pronounced with

regards to central taxation but less clear in the context of sub-central taxation (see

Figure S.3). Central (and combined) top statutory tax rates declined in 10 of the 13 OECD

countries with sub-central taxation – Belgium, Canada, Denmark, Finland, Iceland, Italy,

Korea, Norway, Spain and the United States – and increased in only one of them (Japan). On

the other hand, the representative sub-central top statutory rates declined in seven OECD

countries – Belgium, Denmark, Japan, Korea, Norway, Switzerland and the United States –

and increased in five countries – Finland, Iceland, Italy, Spain and Sweden. Except for

Denmark, Iceland, Japan and Switzerland, changes in top sub-central rates have been

smaller in magnitude than changes in top central rates. Therefore, in the remaining

countries, trends in top combined rates have been driven by changes in top central rates.

The difference in trends at the central and sub-central level may be partly due to the fact

that in countries with sub-central personal income taxes, central tax schedules have

multiple tax brackets but sub-central tax schedules tend to consist of a single tax rate (except

in

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Taxing Wages...of such data by the OECD is without prejudice to the status of the Golan Heights,...

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