CHILD SUPPORT CALCULATION WORKSHEET

State of Arizona — Income Shares Model

Table of Contents

1. Case Information
2. Children Subject to This Order
3. Gross Income Determination
4. Adjusted Child Support Income
5. Basic Child Support Obligation
6. Adjustments for Additional Expenses
7. Parenting Time Adjustment
8. Total Child Support Obligation
9. Deviation Factors
10. Duration and Modification
11. State-Specific Notes
12. Sources and References

1. Case Information

2. Children Subject to This Order

Total Number of Children: [____]

Custody / Parenting Time Arrangement:
☐ One parent has majority of parenting time
☐ Equal or near-equal parenting time
☐ Split custody (each parent has primary custody of at least one child)

Parenting Time Days Per Year:
- Parent A: [____] days
- Parent B: [____] days

3. Gross Income Determination

Parent A — Monthly Gross Income

Parent B — Monthly Gross Income

4. Adjusted Child Support Income

Combined Adjusted Child Support Income: $ [________________________________]

Percentage of Combined Income:
- Parent A: [____] %
- Parent B: [____] %

5. Basic Child Support Obligation

6. Adjustments for Additional Expenses

Health Insurance

Childcare Costs

Extraordinary Expenses

7. Parenting Time Adjustment

☐ Parenting time adjustment applies (non-majority parent has 71+ days)
☐ Parenting time adjustment does not apply

8. Total Child Support Obligation

Monthly Child Support Payment: $ [________________________________]
Parent Obligated to Pay: ☐ Parent A ☐ Parent B

9. Deviation Factors

☐ No deviation requested

☐ Deviation requested based on:

☐ Extraordinary educational expenses
☐ Child's significant independent income
☐ Significant disparity in parents' income
☐ Costs of transportation for parenting time
☐ Seasonal or fluctuating income
☐ Financial hardship of either parent
☐ Non-recurring income
☐ Best interests of the child require deviation
☐ Other: [________________________________]

Proposed deviation amount: $ [________________________________]

Justification:
[________________________________]
[________________________________]

10. Duration and Modification

Duration of Support:
- Support continues until the child reaches age 18, or
- Age 19 if the child is still attending high school or an equivalency program
- ☐ Child is emancipated
- ☐ Child marries
- ☐ Child enters active military duty
- ☐ Other terminating event: [________________________________]

Modification:

☐ This is a modification of a prior order dated [__/__/____]
☐ Existing order amount: $ [____________] per month
☐ Recalculated amount: $ [____________] per month
☐ Difference exceeds 15%: ☐ Yes ☐ No

11. State-Specific Notes

1. Income Shares Model: Arizona uses an Income Shares Model that considers both parents' incomes and allocates the child support obligation proportionally based on each parent's share of the combined income.

2. Minimum Wage Imputation: Courts presume each parent capable of earning at least minimum wage. In 2026, Arizona minimum wage is $15.15/hour in most counties; $18.35/hour in Flagstaff; $15.45/hour in Tucson.

3. Parenting Time Adjustment: A parenting time adjustment applies when the parent with fewer days has 71 or more parenting days per year, recognizing the duplicated costs of maintaining two households.

4. Self-Employment: Self-employment income is calculated as gross receipts minus ordinary and necessary business expenses. Depreciation and other non-cash deductions are generally added back.

5. Four-Year Review Cycle: Arizona law requires the child support guidelines to be reviewed every four years by the Supreme Court.

6. No Automatic COLA: Arizona child support orders do not include automatic cost-of-living adjustments. A modification petition must be filed.

12. Sources and References

• A.R.S. § 25-320 — Child Support Guidelines
• Arizona Child Support Guidelines (Supreme Court)
• Arizona Child Support Guidelines — FindLaw
• Maricopa County Child Support Guidelines

CERTIFICATION

I declare under penalty of perjury that the information provided in this worksheet is true and correct to the best of my knowledge.

Parent A Signature: [________________________________] Date: [__/__/____]

Parent B Signature: [________________________________] Date: [__/__/____]

Attorney for Parent A: [________________________________] Bar #: [____________]

Attorney for Parent B: [________________________________] Bar #: [____________]