Free · Arizona · Current law

Arizona Child Support Calculator

Based on Arizona's official Income Shares formula. Enter both parents' incomes and get an estimate in under a minute.

This estimate is based on the information you provided and general Arizona guidelines. Actual court orders may differ. This is not legal advice.
Your gross monthly income
$/mo

Before taxes — wages, self-employment, bonuses

Other parent's gross monthly income
$/mo

A best estimate is fine for now

Number of children
Who has the children most of the time?
Other parent's overnights per year
nights/yr
By schedule:
By %:
Est. monthly child support
$—/mo

Estimated monthly support

$—/mo

The other parent pays you, the parent with primary timesharing.

Combined net income
Guideline obligation
Childcare + health add-ons
Paying parent's income share
Timesharing credit $0

Estimate only — based on a simplified reading of Arizona Child Support Guidelines 2022. Official calculator → A judge can deviate. Not legal advice.

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How Arizona child support is calculated

Arizona's child support calculation follows a multi-step Income Shares Model. It begins by determining each parent's Child Support Income, which is then adjusted for factors like spousal maintenance. These adjusted incomes are combined to establish the Combined Adjusted Child Support Income. This combined figure is used with a Schedule of Basic Support Obligation to find the Basic Child Support Obligation. Further adjustments are made for medical insurance, childcare, education, and extraordinary child expenses. The resulting Combined Child Support Obligation is then allocated between parents proportionate to their Adjusted Child Support Incomes. Finally, adjustments for parenting time and a self-support reserve test are applied to determine the Presumptive Child Support Award.

What can change your child support amount

Income changes

A substantial change in either parent's income — voluntary or involuntary — can trigger a modification.

Childcare & insurance

Changes in childcare costs or the children's health insurance premiums directly adjust the support amount.

Parenting time shifts

If the custody schedule changes significantly, support can be recalculated under Arizona guidelines.

Child's special needs

Medical conditions, disabilities, or educational needs can justify a departure from the guideline amount.

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Common questions

What people ask about child support

How long does a divorce take in Arizona?

An uncontested divorce in Arizona takes a minimum of 61 days due to the mandatory 60-day waiting period after papers are served. Most uncontested divorces are finalized within 90 to 120 days. Contested divorces can take significantly longer.

Do I need a lawyer to get divorced in Arizona?

No, you are not required to have a lawyer to get divorced in Arizona. However, it is often recommended to seek legal advice, especially in cases involving complex property division or child-related issues, to ensure a fair and legal outcome.

Is Arizona a no-fault divorce state?

Yes, Arizona is a no-fault divorce state. This means that either spouse can file for divorce on the grounds that the marriage is "irretrievably broken," without needing to prove fault like adultery or abandonment. (A.R.S. § 25-312)

How is property divided in Arizona divorce?

Arizona is a community property state. All property acquired by either spouse during the marriage is considered community property and is generally divided equally (50/50) between divorcing spouses. Separate property, acquired before marriage or by gift/inheritance, is not subject to division. (A.R.S. § 25-211)

What is the "cooling-off" period in an Arizona divorce?

Arizona law mandates a 60-day waiting period after divorce papers are served or accepted before a divorce can be finalized. This period, often referred to as a "cooling-off" period, is intended to allow spouses time to reflect and potentially reconcile, though it is primarily a statutory requirement before the court can issue a final decree. (A.R.S. § 25-329)

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