Arizona Child Support Calculator
Estimate child support under Arizona Child Support Guidelines (A.R.S. § 25-320). Calculate baseline support, parenting time overnights, health insurance credits, and work-related childcare costs.
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AZ RulesEstimated Child Support
AZ EstimateUnderstanding Arizona Child Support Guidelines
Arizona operates an Income Shares model governed by A.R.S. § 25-320. The state features an explicit parenting time credit table based on total parenting days per year, with significant adjustments starting at 4 days.
Shared Custody & Overnights in Arizona
Arizona applies a progressive Parenting Time Table adjustment: 3-20 days provides a minor adjustment, 88-115 days gives a 16.1% credit, and 164-182 days (equal time) provides a 48.6% adjustment.
Calculate Your Exact Overnights →Official Court Worksheets & Forms
Family court filings in Arizona require completing: Arizona Supreme Court Child Support Worksheet (Form DRS81f). Review official forms before filing.
View State Worksheets Directory →Worked Calculation Example: Standard Arizona Scenario
Here is a realistic line-by-line computation for two parents in Arizona raising 2 children:
| Guideline Worksheet Line Item | Parent A (Paying) | Parent B (Receiving) | Combined / Order Total |
|---|---|---|---|
| Monthly Guideline Income | $5000 | $3500 | $8500 |
| Parental Income Proportion | 59% | 41% | 100% |
| Basic Child Support Schedule Obligation | - | - | $1450 /mo |
| Work-Related Childcare Cost | - | - | +$450 /mo |
| Health & Dental Insurance Premium | - | - | +$220 /mo |
| Total Combined Child Financial Needs | - | - | $2120 /mo |
| Final Estimated Monthly Support Order | Paid by Parent A to Parent B | $980 /month | |
Frequently Asked Questions in Arizona
Key legal questions regarding child support establishment, modifications, and enforcement in Arizona.
How are parenting days counted in Maricopa and Pima counties?
Under the statewide Arizona Child Support Guidelines, a parenting "day" is 12 or more consecutive hours. Blocks of 6 to 11 hours count as a half-day. Time blocks under 6 hours count as a quarter-day if food or substantial care is provided.
Is self-employment tax deductible from income in Arizona?
Yes. Self-employed parents in Arizona deduct ordinary and necessary business expenses and half of their self-employment tax liability from gross receipts.
How does Arizona handle older children in the guideline calculation?
Under the Arizona guidelines, the basic child support obligation increases by 10% for any child who is at least 12 years of age to reflect increased teenage living expenses.
Next Useful Steps for Your Case
Take the next step in preparing your family financial documentation:
Convert Irregular Income
Standardize hourly wages, seasonal overtime, or commissions into monthly gross figures.
Launch Income Tool →Explore 50/50 Custody
See how equal time sharing and reciprocal guidelines impact final transfer payments.
50/50 Custody Tool →Download Official Worksheets
Find the exact PDF court forms and financial affidavits required by your court clerk.
Court Worksheets Directory →