How to Use the Arizona Child Support Calculator
Enter what you know and press Calculate Estimate. The calculator follows the Arizona Child Support Guidelines (2022 revision), including the Schedule of Basic Support Obligations, the Parenting Time Table and the Self-Support Reserve Test.
- Enter each parent's gross monthly income as Parent A and Parent B.
- Choose the number of children (up to six) and the parent the children live with most of the time.
- Enter the days a year the children spend with the other parent. Arizona turns parenting time days into a percentage adjustment.
- Add monthly child care and the children's medical insurance cost, and say which parent pays them.
Your numbers are sent with the form, not placed in the page address, and this site does not store them. This is a planning estimate. An Arizona court decides the actual amount.
Arizona Child Support Laws and Changes for 2026
Looking for new child support laws in Arizona for 2026? The current edition of the Arizona Child Support Guidelines we found is the 2022 revision, which applies to orders entered after January 1, 2022. We did not find a newer edition, and this page will be updated if one is published. The guidelines tie one figure to the calendar year:
- The Self-Support Reserve is 80% of full-time earnings at the Arizona minimum wage for the year support is calculated. This calculator uses $15.15 an hour, which a published summary reports as the 2026 state minimum wage. Check the Industrial Commission of Arizona if the exact figure matters to you.
A change in the guidelines does not automatically change an existing order. A variance of at least 15% between an existing order and the guideline amount is evidence of a substantial and continuing change of circumstances for a modification.
How Arizona Calculates Child Support
Arizona uses an income shares model. The steps in the guidelines are:
- Work out each parent's Child Support Income and subtract allowed adjustments such as spousal maintenance and support for other children.
- Add the incomes and find the Basic Child Support Obligation in the Schedule of Basic Support Obligations for the number of children.
- Add child care and medical insurance costs (and other allowed costs) to get the Combined Child Support Obligation.
- Split it by each parent's share of combined income.
- Subtract the parenting time adjustment from the share of the parent who has the children part of the time.
- Credit a parent for costs paid directly, then apply the Self-Support Reserve Test.
The result is the Presumptive Child Support Award. A court may deviate only if it finds the guideline amount inappropriate or unjust and makes written findings.
The Schedule of Basic Support Obligations
The schedule covers combined monthly income from $750 to $30,000 in $50 steps, for one to six children. The calculator uses the line closest to the parents' combined income, and rounds up when the income is exactly halfway between two lines. These are sample lines from the schedule:
| Combined monthly income | One child | Two children | Three children |
|---|
| $1,000 | $211 | $321 | $389 |
| $2,000 | $395 | $601 | $727 |
| $3,000 | $574 | $874 | $1,057 |
| $4,000 | $750 | $1,123 | $1,349 |
| $5,000 | $883 | $1,332 | $1,596 |
| $6,000 | $953 | $1,429 | $1,700 |
| $8,000 | $1,092 | $1,622 | $1,912 |
| $10,000 | $1,274 | $1,889 | $2,224 |
| $15,000 | $1,650 | $2,415 | $2,801 |
| $20,000 | $1,991 | $2,912 | $3,376 |
| $30,000 | $2,572 | $3,911 | $4,723 |
For more than six children the six-child amount is presumptive. Above $30,000 a month the $30,000 amount is used unless a parent asks for more.
Arizona Parenting Time Table
The guidelines count each parent's parenting time in days a year and convert it to a percentage. The percentage is multiplied by the Basic Child Support Obligation and subtracted from the share of the parent who has the children for those days.
| Parenting time days a year | Adjustment (share of basic obligation) |
|---|
| 0 to 19 | 0% |
| 20 to 34 | 2.5% |
| 35 to 49 | 5% |
| 50 to 69 | 7.5% |
| 70 to 84 | 10% |
| 85 to 99 | 15% |
| 100 to 114 | 17.5% |
| 115 to 129 | 20% |
| 130 to 142 | 25% |
| 143 to 152 | 32.5% |
| 153 to 163 | 40% |
| 164 or more | 50% |
With nearly equal parenting time, certain costs are presumed to be shared, but one parent can still owe support if their income is higher or if the children's expenses are not shared equally.
The Self-Support Reserve Test
The test makes sure the paying parent can meet basic needs. The Self-Support Reserve is 80% of monthly full-time earnings at the state minimum wage. At $15.15 an hour that is about $2,626 a month, so the reserve is about $2,101 a month.
Subtract the reserve from the paying parent's income. If the remainder is less than the presumptive amount, the court may reduce the order to the remainder, after considering the effect on the receiving parent's household. The test applies to current support only, and a court can still order an extra amount toward arrears.
Child Care, Medical Insurance and Other Costs
- Medical insurance: the cost attributable to the children is added to the Basic Child Support Obligation. Dental and vision coverage the parent provides is included.
- Child care: the cost of care that lets a parent work or look for work may be added. Costs are annualized into an equal monthly amount.
- Older child adjustment: the guidelines add 10% of the basic obligation for each child age 12 or over. This calculator does not ask for ages and leaves it out.
- Education and extraordinary expenses: the court may add reasonable costs agreed by both parents or ordered by the court, and costs for a gifted or special needs child.
A parent who pays a cost directly gets a credit against their share, because that part of their obligation is already paid.
Arizona Child Support Examples
In each example the children live mostly with Parent B. Amounts are monthly and come from this calculator, which uses exact income percentages rather than rounded ones.
Example 1: One child, no parenting time adjustment
A earns $5,000 and B earns $3,000. The basic obligation for $8,000 and one child is $1,092. A's share is 62.5%. A pays $683 a month.
Example 2: Two children with child care
A earns $6,000, B earns $4,000, and B pays $500 a month for child care. The basic obligation for $10,000 and two children is $1,889, plus $500, so the combined obligation is $2,389. A's 60% share is $1,433 a month.
Example 3: Parenting time
A earns $8,000 and B earns $3,000, with two children and 140 days a year with A. The basic obligation is $1,984. A's share of $1,443 is reduced by 25% of $1,984 ($496), so A pays $947 a month.
Example 4: Self-Support Reserve Test
A earns $2,300 and B earns $800, with two children. The presumptive amount is $668, but A's income minus the $2,101 reserve is only $199, so the order may be reduced to $199 a month.
These are illustrations produced from the guidelines, not court rulings.
What Counts as Income in Arizona
Child Support Income is gross income from any source, including salaries, wages, commissions, bonuses, overtime in some cases, self-employment and business income, rental income, interest, dividends, retirement and disability benefits, Social Security and unemployment benefits. The court can attribute income to a parent who is able to work but does not. Some public assistance is not counted. Section II of the guidelines gives the full lists.
Frequently Asked Questions About Arizona Child Support
Is this the official Arizona child support calculator?
No. ChildSupportCalculator.xyz is an independent tool and is not affiliated with the State of Arizona or its courts. It applies the Arizona Child Support Guidelines. A court sets the actual amount.
How is child support calculated in Arizona?
Arizona adds the parents' incomes, finds the Basic Child Support Obligation in the schedule, adds child care and medical insurance, splits the total by income share, subtracts a parenting time adjustment, credits costs a parent pays directly and applies the Self-Support Reserve Test.
Are there new child support guidelines in Arizona in 2026?
The current edition we found is the 2022 revision. We did not find a newer one. This page will be updated if one is published.
Does Arizona use gross or net income?
Gross income from all sources, minus a few allowed adjustments such as spousal maintenance and support for other children.
How does parenting time change child support in Arizona?
The Parenting Time Table converts a parent's days a year into a percentage, from 0% for 19 days or fewer up to 50% for 164 days or more. That percentage of the basic obligation is subtracted from that parent's share.
What is the Self-Support Reserve in Arizona?
80% of full-time earnings at the state minimum wage. If a parent's income minus the reserve is less than the presumptive amount, the court may reduce the order.
How are child care and medical insurance handled in Arizona?
They are added to the basic obligation and split by income share. A parent who pays them directly gets a credit against their share.
Can a parent with equal time still pay support in Arizona?
Yes. With nearly equal parenting time, the parent with the higher income generally pays the lower-income parent, and unequal expenses can also lead to a payment.
How is an Arizona order modified?
Either parent can ask for a modification when circumstances have substantially and continuingly changed. A variance of at least 15% between the existing order and the guideline amount is evidence of that.
Does the Arizona calculator need my personal details or a login?
No. This site needs no login and does not store your numbers.
Official Arizona Child Support Resources
Published: October 14, 2026
Last reviewed: October 14, 2026
Researched and reviewed by Eric John, founder and editor, using official state statutes and guidance. How we build and check our calculators · Corrections
