Free Tools/Arizona Child Support Calculator

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Arizona Child Support Calculator

Estimate child support payments using Arizona's income shares model based on both parents' gross income, number of children, and parenting time

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How It Works

Enter Both Parents' Income

Input each parent's monthly gross income before taxes. Arizona uses gross income as the basis for child support calculations under A.R.S. § 25-320.

Specify Number of Children

Enter the number of children covered by the support order. Arizona's schedule provides different obligation amounts based on the number of children.

Add Parenting Time and Costs

Enter the number of parenting days per year for the non-custodial parent (100+ triggers adjustment). Add childcare and health insurance costs for the children.

Get Your Estimate

Receive an estimated monthly child support payment based on Arizona guidelines, including a full breakdown of the calculation and any parenting time adjustments.

Why Use This Calculator?

Get a quick estimate based on Arizona law before consulting an attorney.

A.R.S. § 25-320 Schedule

Uses the same income shares schedule Arizona courts apply under the statutory guidelines for accurate estimates.

Parenting Time Adjustment

Applies Arizona's built-in parenting time adjustment for 100+ days, with enhanced adjustment for 116+ days.

Full Cost Inclusion

Factors in childcare and health insurance costs just like Arizona guidelines require for a complete estimate.

Calculate Your Child Support Estimate

Enter your details below to estimate child support payments under Arizona law.

Income Information

Parent 1's Monthly Gross Income

Total income before taxes and deductions

Parent 2's Monthly Gross Income

Total income before taxes and deductions

Children & Parenting Time

Number of Children

Non-Custodial Parent's Parenting Days Per Year

100+ days triggers parenting time adjustment; 116+ triggers equal parenting adjustment (max 365)

Additional Monthly Costs

Childcare Costs (monthly)

Health Insurance for Child (monthly)

Arizona Parenting Time Thresholds

How parenting days affect child support calculations in Arizona

0-99 days

Standard Calculation

Under 27% time

The non-custodial parent pays their full proportional share of the support obligation with no parenting time adjustment.

100-115 days

Moderate Adjustment

27-31% time

A moderate reduction is applied to the support amount, recognizing the increased expenses during parenting time.

116-365 days

Equal Parenting

32%+ time

Each parent's obligation is adjusted by their percentage of parenting time. This typically results in a significantly reduced payment.

Frequently Asked Questions

Common questions about Arizona child support

How is child support calculated in Arizona?

Arizona uses the income shares model under A.R.S. § 25-320 and the Arizona Child Support Guidelines. Both parents' monthly gross incomes are combined to determine a basic child support obligation from the guidelines schedule. That obligation is divided proportionally based on each parent's share of the combined income. Arizona also applies a parenting time adjustment based on the number of days each parent has with the child.

What counts as gross income in Arizona child support?

Gross income in Arizona includes income from all sources including wages, salaries, commissions, bonuses, self-employment income, dividends, severance pay, pensions, interest, trust income, annuities, Social Security benefits, unemployment benefits, disability insurance, workers' compensation, and spousal maintenance received. Arizona courts may impute income to a parent who is voluntarily unemployed or underemployed.

How does parenting time affect Arizona child support?

Arizona's guidelines include a built-in parenting time adjustment. The adjustment is based on the number of parenting days each parent has per year. When the non-custodial parent has 100 or more parenting days (~27%), a moderate adjustment applies. When they have 116 or more days (~32%), a more significant equal parenting adjustment applies that can substantially reduce the support amount.

Can Arizona child support be modified?

Yes, either parent can petition to modify child support when there has been a substantial and continuing change in circumstances. Arizona allows modification if the current order differs from the recalculated guideline amount by 15% or more. Common reasons include significant income changes, changes in parenting time, changes in childcare or medical costs, or a child aging out of the order.

How long does child support last in Arizona?

In Arizona, child support continues until the child turns 18. If the child is still attending high school at 18, support continues until graduation or age 19, whichever comes first. Support may continue past 18 for a child with a severe mental or physical disability. Arizona courts generally cannot order parents to pay for college as part of child support.

Are childcare and health insurance included in the calculation?

Yes. Under Arizona's guidelines, work-related childcare costs and the cost of health insurance for the child are added to the basic child support obligation before it is divided between the parents. Each parent's share of these additional costs is proportional to their share of the combined gross income.

Is this calculator accurate for my situation?

This calculator provides an estimate based on the Arizona child support guidelines. Actual court-ordered support may differ because judges may deviate from the guidelines based on factors including the child's educational needs, extraordinary expenses, the financial resources of each parent, and the standard of living the child would have enjoyed. Consult an Arizona family law attorney for an accurate assessment.

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