Arizona Child Support Calculator (2026)
Arizona calculates child support under income-shares guidelines (A.R.S. § 25-320 app. (Arizona Child Support Guidelines)). Estimate the guideline amount below.
Income basis: Combined Adjusted Gross Income (monthly Child Support Income after spousal-maintenance/other-children adjustments).
Enter the income above to see the guideline estimate.
Simplified guideline estimate, interpolated from the official schedule — before health-insurance, childcare, and parenting-time adjustments. For the exact figure use the official Arizona calculator.
Your Case Details
Answer a few questions to see your estimated range.
Approximate gap between higher-earner and lower-earner.
Estimated Monthly Support
$840 — $1,560
State formulas vary significantly. This estimate uses national averages — your state's guidelines may produce a different number.
Editorially Reviewed — Content reviewed for accuracy using published legal research, government data, and verified court records. See our methodology
Reviewed by Leonard Goldberg, Editor · Last updated
Arizona uses the income-shares model: both parents' incomes are combined, the official schedule sets a basic support obligation, and each parent owes their proportional share (A.R.S. § 25-320 app. (Arizona Child Support Guidelines)). The calculator above interpolates the official schedule for a quick estimate — health-insurance, child-care, and parenting-time adjustments come on top.
How Arizona Calculates Child Support
Arizona uses the Income Shares Model: both parents' incomes are combined so the total child support obligation approximates what would have been spent on the children if the family lived together, then each parent pays their proportionate share. Courts look up the parents' Combined Adjusted Gross Income on the official monthly 'Schedule of Basic Support Obligations' (A.R.S. § 25-320 app.), effective January 1, 2022 (Arizona Supreme Court Administrative Order 2022-116), and add/allocate the parenting-time, medical-insurance and childcare adjustments via the state's computer-based Child Support Worksheet. A.R.S. § 25-320(D) requires the Supreme Court to review the Guidelines at least every 4 years; a 2026 revision review is actively underway (public comment forum held July 22, 2026), but no new schedule had been confirmed adopted as of this research, so the 2022 figures remain the current officially verified numbers.
Statutory basis: A.R.S. § 25-320 app. (Arizona Child Support Guidelines). Exact figure: official Arizona calculator.
Official Schedule — Excerpt
Basic support obligation at selected combined incomes (Combined Adjusted Gross Income (monthly Child Support Income after spousal-maintenance/other-children adjustments)), from the official Arizona schedule:
| Combined income | 1 child | 2 children | 3 children |
|---|---|---|---|
| $3,350 | $636 | $968 | $1,170 |
| $5,000 | $883 | $1,332 | $1,596 |
| $7,500 | $1,058 | $1,578 | $1,869 |
| $10,000 | $1,274 | $1,889 | $2,224 |
Worked Example
Parent A earns $4,500/month and Parent B earns $3,000/month, for a Combined Adjusted Gross Income of $7,500/month with 2 children. The Schedule's Basic Child Support Obligation for 2 children at $7,500 is $1,869/month. Parent A's proportionate share is 60% ($4,500 ÷ $7,500) = $1,121/month; Parent B's share is 40% = $748/month. If Parent A has less parenting time, Parent A pays $1,121/month to Parent B — before any add-ons for medical insurance or childcare, the Parenting Time Adjustment, and a possible 10% Older Child Adjustment if either child is 12 or older.
When Courts Deviate From the Guideline
- A significant disparity of income exists between the parents and each parent has significant parenting time
- Combined income exceeds $30,000/month and there is a significant disparity in income between the parents
- One parent pays a disproportionate share of the child's expenses and there is significant parenting time for each parent
- The parenting plan requires a parent to incur significant travel expenses that, combined with child support, may impede that parent's ability to exercise parenting time
- Payment of child support would compromise a parent's ability to receive and afford necessary and extraordinary out-of-pocket health care or mental health services
- Unusual emotional or physical needs of a child not common to both parties, requiring that parent's presence in the home
Frequently Asked Questions
Is there a cap on how much child support can be ordered in Arizona?
Yes, a soft cap. The official Schedule of Basic Support Obligations tops out at $30,000/month in Combined Adjusted Gross Income (e.g., $3,911/month for 2 children at that level). Above $30,000, courts presumptively still use the $30,000 row unless a parent requests — and proves the child's needs and/or income disparity justify — a higher amount (A.R.S. § 25-320 app. § III.A.1.c, § IX.D.2).
What counts as income for Arizona child support?
Almost everything before taxes: wages, salary, commissions, bonuses, self-employment net profit, military pay including BAH/BAS, pensions, Social Security, workers' comp, unemployment and disability benefits, and recurring gifts. It excludes means-tested public benefits (TANF, SSI), sums received as child support for other children, and stepparent/new-spouse income; courts also have discretion to exclude non-recurring overtime or a second job not historically worked (Guidelines § II.A).
How does shared or 50/50 parenting time change the amount owed?
Arizona applies a Parenting Time Adjustment on top of the income-shares math: a parent's annual parenting days are converted via the Parenting Time Table into a percentage, multiplied by the Basic Child Support Obligation, and subtracted from that parent's share — so more overnights with the paying parent lowers the support owed and, in close-to-equal schedules, the higher-earning parent typically pays the lower-earning one (Guidelines §§ V-VI, X.A.2).
When does Arizona child support end — does it cover college?
Support presumptively ends the last day of the month the youngest child turns 18, unless that child is not expected to finish high school by then — in which case it runs to graduation or age 19, whichever comes first. Arizona does not require support to continue through college. The only extension is for a child with a severe mental or physical disability that began before age 18 and prevents self-sufficiency (A.R.S. § 25-320; Guidelines § XV).