http://www.azcourts.gov/familylaw/childsupportcalculator.aspx

The income of each parent

The number of shared children

Spousal maintenance received by either parent

Whether there are other children or support obligations from prior relationships

The costs of medical, dental and vision insurance costs for the child

Any extraordinary or unusual child expenses paid

The time that each parent spends with physical custody of the child

http://www.singerpistiner.com/