Child Support Calculation Worksheet

IMPORTANT: THIS IS A PREPARATION GUIDE — NOT THE OFFICIAL COURT WORKSHEET

Alaska Civil Rule 90.3(e) requires each parent to file an official DR-305 Child Support Guidelines Affidavit with supporting documentation. Use the applicable official calculation form—DR-306 (shared custody), DR-307 (divided custody), or DR-308 (hybrid custody)—when that custody arrangement applies.
This template provides preparation fields only. Transfer the information to the current official affidavit and calculation forms before filing.
The official form is available at https://courts.alaska.gov/shc/family/support.htm.
Do not file this document directly with the court.

CHILD SUPPORT CALCULATION WORKSHEET

State of Alaska — Civil Rule 90.3 Percentage of Income Model

Table of Contents

1. Case Information
2. Children Subject to This Order
3. Income Determination
4. Allowable Deductions
5. Adjusted Annual Income
6. Child Support Calculation
7. Shared and Divided Custody Adjustments
8. Health Insurance and Additional Expenses
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 Arrangement:
☐ Primary Physical Custody
☐ Shared Physical Custody (each parent has physical custody for at least 30% of overnights)
☐ Divided Custody (each parent has primary custody of at least one child)
☐ Hybrid Custody

3. Income Determination

Noncustodial Parent — Annual Gross Income

Custodial Parent — Annual Gross Income (for shared custody calculation)

4. Allowable Deductions

Noncustodial Parent Deductions

5. Adjusted Annual Income

☐ Adjusted annual income exceeds $138,000
☐ Evidence presented for inclusion of income above $138,000: ☐ Yes ☐ No

6. Child Support Calculation

Primary Custody Percentage Schedule

Calculation

7. Shared and Divided Custody Adjustments

Shared Custody (Rule 90.3(b))

☐ Shared custody applies

Parent obligated to pay: ☐ Parent A ☐ Parent B

If the custody percentages do not accurately reflect the ratio of funds each parent will directly spend on the children, Rule 90.3(b)(1)(B) permits the court to vary the percentages to reflect its findings. The order may use a different monthly payment schedule in the limited circumstances stated in Rule 90.3(b)(1)(D).

Divided Custody (Rule 90.3(b))

☐ Divided custody applies

Parent obligated to pay: ☐ Parent A ☐ Parent B

Divided custody is an unusual circumstance under Rule 90.3(b)(2). After offsetting the two primary-custody calculations, the court must consider whether the result should be varied under Rule 90.3(c)(1).

8. Health Insurance and Additional Expenses

9. Deviation Factors

☐ No deviation requested

☐ Deviation requested based on:

☐ Unusually large family size
☐ Especially large income of the obligor
☐ Health or other extraordinary needs of the child
☐ Unusually high or low expenses of the custodial parent
☐ Standard of living the child would have enjoyed absent separation
☐ Particular prior debts of either parent
☐ Tax consequences
☐ 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 in high school
• ☐ 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
☐ Change exceeds 15%: ☐ Yes ☐ No

11. State-Specific Notes

1. Percentage of Income Model: Alaska uses a Percentage of Income model focused primarily on the noncustodial parent's income, unlike Income Shares states that combine both parents' incomes.

2. Income Cap: The standard calculation applies to the first $138,000 of adjusted annual income. Income above this threshold requires separate evidence and court determination.

3. Permanent Fund Dividend: The Alaska Permanent Fund Dividend is included in gross income for child support calculation purposes.

4. Shared Custody Threshold: Shared custody provisions apply when each parent has physical custody for at least 30% of overnights annually (approximately 110 nights).

5. Military Allowances: Non-housing military allowances (BAS, COLA, hazard pay) are included in gross income. BAH is generally excluded.

6. Currency Check: Use the Alaska Court System's current Rule 90.3 compilation and current DR-305 through DR-308 forms. Do not rely on a bill number or an older form revision as proof of the current calculation rules.

12. Sources and References

• Alaska Civil Rule 90.3 — Child Support Awards
• DR-310: How to Calculate Child Support Under Rule 90.3
• Alaska Courts — Child Support Forms and Information
• Alaska Statutes Title 25 — Marital and Domestic Relations

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 #: [____________]