Arizona Child Support Calculator
Calculate Arizona child support with parenting-time credits, income shares logic, and mandatory add-ons before you treat the number as your baseline.
Calculate Arizona Child Support
Enter each parent’s monthly income, parenting days, and add-ons. The calculator applies income shares logic, parenting-time credits, and the main factors that usually change the payment.
Which best describes you?
Arizona Child Support Estimate
Arizona Child Support Guidelines (Income Shares Model)
Need more information
Enter each parent’s monthly gross income and the number of children to generate a guideline estimate.
Next Steps in Arizona
Keep visitors inside the same Arizona cluster with the most relevant next steps.
How Arizona Calculates Child Support
Arizona follows the Income Shares model: both parents’ adjusted incomes are combined, a basic support obligation is located in the statewide schedule, and the obligation is split according to each parent’s income percentage. Parenting time, childcare, and insurance costs modify the core obligation before a final monthly payment is determined.
Key Components
- Adjusted gross income for both parents (spousal support and other child support orders are netted out).
- Basic Child Support Obligation (BCSO) sourced from the statewide schedule.
- Parenting time credit based on annual parenting days.
Mandatory Add-Ons
- Work-related childcare expenses.
- Children’s health, dental, and vision insurance premiums.
- Extraordinary medical costs may be allocated separately.
How Arizona Child Support Is Calculated
- Combine adjusted incomes. Each parent’s gross income is adjusted for spousal support and other court-ordered obligations.
- Determine the base obligation. The combined income is multiplied by a guideline rate to approximate the state schedule.
- Allocate by income share. Each parent owes a percentage equal to their share of the combined income.
- Apply parenting time credit. The paying parent’s share is reduced when overnight parenting time crosses key thresholds.
- Add childcare and insurance. Mandatory add-ons are apportioned and added to the final transfer payment.
Frequently Asked Questions
Does Arizona use the Income Shares model for child support?
The calculator mirrors the Income Shares structure but uses simplified rates. Always confirm final numbers with the official Arizona Supreme Court schedule or your attorney.
How does parenting time affect child support in Arizona?
The tool applies a proportional credit when the payor exceeds roughly 54 parenting days (15% of the year). Highly customized schedules may require manual adjustments.
What expenses can be added to child support in Arizona?
Yes. Enter the monthly costs for work-related childcare and the marginal cost of the children’s health coverage. The add-ons are prorated by each parent’s income share.
When does child support end in Arizona?
Support usually ends when the youngest child turns 18, but it can extend through high school graduation or age 19 if the child is still enrolled. The calculator flags this rule in the summary.
Authoritative Resources
Need to Recheck the Arizona Numbers?
Re-run the calculator after updating income, parenting time, or add-ons so you are not negotiating from an outdated Arizona child support estimate.
This tool provides an educational estimate. Arizona courts rely on the official statewide schedule and may deviate after reviewing evidence. Consult an Arizona family law attorney for legal advice.