Estimate Arizona child support under A.R.S. § 25-320 app. (Guidelines) — Income Shares model, current caps and percentages, with a step-by-step worked example.
| Guideline model | Income Shares |
|---|---|
| Income basis | Gross (pre-tax) income |
| How it works | Both parents’ incomes are combined, a basic obligation is taken from the state’s official schedule, and each parent pays in proportion to their share of combined income. |
| Statute / rule | A.R.S. § 25-320 app. (Guidelines) |
| Parameters verified | pending full verification (model and statute confirmed) |
Result: $1,020 - $1,380 per month (simplified range)
Arizona uses the income shares model under A.R.S. § 25-320 app. (Guidelines): both parents’ incomes are combined, a basic obligation is determined, and each parent is responsible for their proportional share. The paying parent’s share becomes the support order.
Arizona calculates support on gross (pre-tax) income as defined in A.R.S. § 25-320 app. (Guidelines).
Yes. The guideline amount under A.R.S. § 25-320 app. (Guidelines) is presumptive, not absolute - courts may deviate with written findings for factors like extraordinary medical or educational needs, other children supported, or very high income beyond the guideline range.
Apply through the Arizona child support agency or the family court in your county. Existing orders can be modified on a substantial change in circumstances - typically a significant income change, job loss, or a change in custody. The official calculator/worksheet is linked on this page (www.azcourts.gov).
Estimate only — not legal advice. Based on Arizona guidelines (A.R.S. § 25-320 app. (Guidelines)). Courts may deviate. For an official figure use the official Arizona calculator.