Arizona Child Support Calculator (Free, Instant Results)

An Arizona Child Support Calculator can give you a quick estimate of monthly child support based on the state’s Child Support Guidelines ^[1]. Enter each parent’s income, parenting time, health insurance costs and other basic information to see an estimated support amount for your family.

This number is not a court order. It is not the final answer—it’s a starting point. Judges and mediators in Arizona consider parenting time, health insurance, childcare, other children supported, and adjustments that can shift the final figure. Use this estimate to understand the basics, and in mediation, turn it into a fair agreement.

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How to Use the Estimate

The calculator follows the Arizona Child Support Guidelines formula, but does not account for every adjustment, credit, or unique fact of your situation. Treat the result as a reference point to discuss in a mediation meeting, not the final number that must appear in your divorce or parenting plan.

If the estimate surprises you, that is useful information. It may mean some details need to be reviewed more carefully, or that you and your co-parent need help understanding how the Child Support Guidelines apply to your family.

In mediation, we review the calculator with parents, explain the law, and help them reach their best possible agreement. Parents may follow the calculator amount, or agree to a higher or lower amount based on the best interests of the children.

Calculation Inputs

Enter Child & Parent Information

Child Information

Number of Children

Child Ages (for 10% Older Child Adjustment on children age 12+)

Time Sharing

Equal Mainly with Me Mainly with Other Parent

My Information

Gross Monthly Income (Income before taxes) Pre-tax earnings from all sources

Monthly Spousal Maintenance (Alimony) Paid or Received Enter as a positive number if received, or a negative number (e.g., -500) if paid.

Monthly Health Insurance Premium Paid by You Only the child’s portion per month

(Optional) Monthly Childcare, Education, Gifted/Special Needs Child Costs Paid By You This is typically considered only at the discretion of the Judge in a court case, but in mediation, it is commonly left at $0 for both parents, unless any parent has major costs.

Other Parent’s Information

Gross Monthly Income (Income before taxes) Pre-tax earnings from all sources

Monthly Spousal Maintenance (Alimony) Paid or Received Enter as a positive number if received, or a negative number (e.g., -500) if paid.

Monthly Health Insurance Premium Paid by You Only the child’s portion per month

Want help applying these numbers to your situation?

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Move from estimate to agreement

An Arizona child support calculator gives you a number. Our Certified attorney-mediators help you turn that number into a real agreement.

In mediation, we’ll help you understand the Arizona Child Support Guidelines, review your real numbers, and resolve child support together with parenting time to prepare the court-ready documents you need to finalize your case.

You pay one flat fee. No hourly billing. No retainer. No surprise invoices. You stay in control. And your children stay at the center of the process.

Frequently asked questions

How is child support calculated in Arizona?

Arizona uses an Income Shares Model. It factors in both parents’ gross incomes, parenting time, health insurance, childcare, and support paid for other children.

What income counts on the calculator?

Most gross income counts: wages, salaries, self-employment, bonuses, commissions, and certain benefits. Some income is treated differently or excluded. Accurate numbers from both parents give the best estimate.

Does parenting time change the amount?

Yes. More shared parenting time can reduce the monthly amount one parent pays.

Is the calculator’s result what a judge will order?

It’s an estimate, not a court order. A judge has discretion to deviate from the Guidelines. In mediation, you and your co-parent decide the final number, subject to court approval.

Can parents agree to a different amount than the guidelines?

Yes. You can use the guideline number as a starting point, then craft an agreement that fits your real-life circumstances and your children’s best interests. The court reviews and approves the final terms.

How often can child support be modified?

Arizona generally treats a change of 15% or more in the guideline amount as a substantial change. This often follows a job change, a parenting time shift, or a major change in childcare or health insurance costs.

Sources

[1] Arizona Revised Statutes § 25-320 (Child Support Guidelines) | https://www.azleg.gov/ars/25/00320.htm

How We Support Unique Cases

Divorce Mediation

Our expert attorney-mediators guide you to fair, confidential agreements without court battles.

Asset Division

Addressing Arizona’s community-property laws under ARS § 25-211 and related statutes.

Alimony

Determining fair spousal maintenance per ARS § 25-319 for financial stability.

Gray Divorce

Navigating retirement assets, pensions, and property division for adults over 50.

Same-Sex Divorce

Protecting equal rights and resolving issues unique to same-sex couples.

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Michael Aurit, JD, MDR, and Karen Aurit, MA

Aurit Mediation is dedicated to transforming divorce through compassion. They have guided thousands of families to peaceful resolutions. Our licensed attorney-mediators are experts in Arizona family law, ensuring every agreement is legally compliant and protects your interests.

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Serving Clients Across Arizona

Aurit Mediation proudly serves LGBTQ+ couples throughout Arizona, including Phoenix, Scottsdale, Tucson, Flagstaff, and beyond. We also offer virtual mediation services everywhere in Arizona, ensuring access for clients across the state. Find an Aurit Mediation location near you, or connect virtually with our experienced team to discuss next steps in your divorce.

Start Your Child Support Mediation Journey

If you are looking for a practical, child‑focused way to resolve child support issues, child support mediation offers a structured and supportive path forward. Our experienced mediators are here to help you work toward agreements that prioritize your children and support healthier co‑parenting relationships.