Arizona Child Support Calculator (2026)

Arizona combines both parents’ adjusted gross income, reads a basic obligation from the schedule, and splits it by income share. The current schedule runs from $750 to $30,000 in $50 steps, with a $30,000 ceiling.

Updated November 12, 2026 Sources and methodology

Results

Estimated monthly support: $0

Enter the incomes above to see who pays whom.

What this estimate does not include

How Arizona calculates child support

Arizona uses the income-shares model under A.R.S. Section 25-320 and the Child Support Guidelines adopted by the Arizona Supreme Court. The parents’ adjusted gross incomes are added, the Schedule of Basic Support Obligations gives a basic obligation for that combined income and the number of children, and each parent is assigned a share in proportion to income. The parent who pays support owes that share.

The guidelines in effect for 2026 took effect January 1, 2022 and were revised September 21, 2022. The Supreme Court’s Child Support Guidelines Review Subcommittee opened its quadrennial review in 2026, with proposed revisions published for public comment that October and November. Until new guidelines are adopted, the 2022 version and its schedule apply.

This page covers the basic obligation. The official Child Support Worksheet also handles the parenting-time adjustment, medical insurance, childcare, the older-child adjustment, and deviations.

The schedule and the $30,000 ceiling

The Schedule of Basic Support Obligations runs from $750 to $30,000 of combined adjusted gross income in $50 steps, with a column for one to six children. For example, $5,000 of combined income gives $883 for one child, and $12,000 gives $2,088 for two.

Section III.A says to find the income closest to the combined figure. If the combined income falls exactly between two rows, round up: $8,125 uses the $8,150 row. The calculator applies that rule before the lookup.

Above $30,000 a month, the $30,000 amount is the basic obligation unless a party asks the court to consider more, in which case the court weighs the child’s needs and the parents’ incomes. With more than six children, the six-child amount is the presumptive obligation and the parent seeking more has the burden of proof.

Income and the adjustments to it

Arizona starts with gross income from all sources: wages, bonuses, overtime (subject to the guidelines’ rule for overtime beyond full-time hours), self-employment and business income, rent, interest, dividends, pensions, unemployment, disability, Social Security, workers’ compensation, and gifts. Income taxes and FICA are not deducted, which is why the input is closer to gross pay than to take-home pay.

The adjustments are narrow. Spousal maintenance paid is deducted and maintenance received is added. Support paid for children of other relationships, and the theoretical obligation for other children living with a parent, can reduce the income used for this case. The court can also impute income to a parent who is voluntarily unemployed or underemployed.

Those adjustments are where most disputes live. This calculator takes one adjusted figure per parent, so it cannot reproduce the other-children calculation or an imputed income finding.

The self-support reserve test

Arizona’s self-support reserve is 80% of the monthly full-time earnings at the state minimum wage. The test subtracts the reserve from the paying parent’s adjusted income and compares the result with that parent’s share of the obligation.

If the result is at least the share, the guidelines amount stands. If the result is lower but positive, the court may reduce the order to that amount, after also checking whether the receiving parent can meet basic needs. Because the reduction is discretionary, this calculator shows the presumptive guideline amount and treats the reserve as an exclusion rather than applying it automatically.

Parenting time and the add-ons

The basic obligation assumes an intact household. When the paying parent exercises parenting time, Section V uses a Parenting Time Table to convert the parent’s annual days into a percentage (0% at 19 days or fewer, 2.5% at 20 to 34 days, rising to 50% at 164 days or more) and subtracts that percentage of the basic obligation from the paying parent’s share.

The table is mechanical for different day counts, but the guidelines also let the court deviate around equal time, and the adjustment depends on an accurate parenting-day count. This calculator does not apply it.

The add-ons are separate: medical insurance for the children, childcare needed for work, education expenses, extraordinary child expenses, and a 10% adjustment for each child age 12 or older. None of them are in this estimate.

An Arizona example at $5,000 combined

Parent A earns $3,000 and Parent B earns $2,000 of adjusted gross income, with one child. Combined income is $5,000, and the schedule gives $883. Parent A’s 60% share is $529.80 a month, or about $530.

With one earner at $6,000 and two children, the schedule gives $1,429, which is the example printed in the guidelines. And with Parent A at $8,000 and Parent B at $4,000 and two children, combined income is $12,000, the schedule gives $2,088, and Parent A’s two-thirds share is $1,392.

When the official calculator is the better choice

The Arizona Supreme Court’s child support calculator and the Child Support Worksheet walk through parenting time, the older-child adjustment, medical insurance, childcare, the self-support reserve, and deviations in one place. Use them if the parents share significant parenting time, if either parent supports children in another household, or if income must be imputed.

An Arizona family law attorney is the right next step when the parents disagree about income or parenting time. The guideline amount is the starting point; the court’s order controls.

Frequently asked questions

Does Arizona use gross or net income for child support?

Adjusted gross income. The guidelines start with each parent’s income from all sources and do not deduct income tax, FICA, or ordinary living expenses. The adjustments are for spousal maintenance paid or received, support paid for children of other relationships, and certain expenses for other children living with the parent.

What is the Arizona child support schedule for 2026?

The Schedule of Basic Support Obligations in the guidelines still in effect for 2026 runs from $750 to $30,000 of combined adjusted gross income in $50 steps, with a column for one to six children. The guidelines took effect January 1, 2022 and were revised September 21, 2022; the quadrennial review is under way in 2026, and any revised guidelines would take effect after that process.

How does the schedule handle income between the rows?

It rounds to the closest $50 entry. If the combined income falls exactly between two amounts, the guidelines say to round up. So $8,125 uses the $8,150 row. Above $30,000, the $30,000 amount is the basic obligation unless a party asks the court to consider a higher amount.

What is the self-support reserve in Arizona?

It is 80% of the monthly full-time earnings at the state minimum wage. The court subtracts that reserve from the paying parent’s adjusted income and compares the result with that parent’s share of the obligation. If the result is lower, the court may reduce the order to the resulting amount. The reduction is discretionary, and this calculator does not apply it.

Does 50/50 parenting time reduce Arizona child support?

Yes, through the Parenting Time Table in Section V. The table converts the paying parent’s annual parenting days into a percentage, from 0% at 19 days or fewer up to 50% at 164 days or more, and that percentage of the basic obligation is subtracted from the paying parent’s share. This calculator shows the amount before that adjustment.

Does Arizona child support include health insurance and childcare?

They are added to the basic obligation, not included in the schedule. The children’s medical insurance premium, childcare needed for work, education expenses, and extraordinary child expenses can be added and are then shared by income proportion. There is also a 10% adjustment for children age 12 or older.

Sources.

Figures are estimates for the basic obligation and are not legal advice. The court’s order controls. See the methodology and update policy.