Arizona Child Support Calculator

Free instant estimate based on Arizona's Income Shares model (A.R.S. §25-320)

Enter Your Information

Your Results Will Appear Here

Select a state and enter your monthly gross income to see an estimated child support payment based on net income.

How Arizona Calculates Child Support

Arizona calculates child support using the Income Shares Model as defined in A.R.S. §25-320 and the Arizona Supreme Court Child Support Guidelines. Both parents' gross incomes are combined to determine the total support obligation from the state schedule. Each parent's share is proportional to their share of the combined income.

Health insurance premiums for the child, work-related childcare costs, and extraordinary medical expenses are added to the basic obligation. Arizona also provides parenting time adjustments for shared custody arrangements, which can significantly affect the final support amount.

Courts may deviate from the guideline amount for good cause. Factors considered include the child's special needs, the age and needs of the child, the financial resources of both parents, and the standard of living the child would have enjoyed had the family remained intact.

Frequently Asked Questions

How does Arizona calculate child support using the Income Shares Model?
Arizona uses the Income Shares Model under A.R.S. §25-320. Both parents' gross incomes are combined to look up the basic support obligation from the state schedule. Each parent then pays their proportional share of that obligation based on their percentage of the combined income.
What is the self-support reserve in Arizona?
Arizona's self-support reserve is $1,215 per month (2024). This ensures the obligor parent retains enough income to meet their own basic living needs. If the parent's income is near this threshold, the court may reduce the support obligation accordingly.
What income is counted for Arizona child support?
Arizona counts gross income from all sources including wages, salaries, bonuses, commissions, self-employment income, interest, dividends, rental income, Social Security benefits, workers' compensation, unemployment benefits, and retirement distributions. Arizona has a flat 2.5% state income tax.
How does parenting time affect Arizona child support?
Arizona provides parenting time adjustments for shared custody arrangements. When parents share substantial parenting time, the support amount is reduced to reflect the direct costs each parent incurs while the child is in their care. The more parenting time the non-custodial parent has, the greater the potential adjustment.
Can Arizona child support be modified?
Yes. Either parent can request a modification if there has been a material and substantial change in circumstances since the last order. This includes significant income changes, changes in custody or parenting time, or changes in the child's needs.

Important Legal Disclaimer

The information provided on SupportCalc is for general informational and educational purposes only. Nothing on this website should be taken as legal advice. Child support calculations are estimates based on publicly available state guidelines and may not reflect the exact amount ordered by a court. Every case is unique, and many factors can affect the final support order. Please consult with a qualified family law attorney in your jurisdiction for advice specific to your situation.