Alaska Child Support
Estimate for Alaska
Alaska uses the Percentage of Income model.
View calculation breakdown
| Statutory rate (2 children) | 27% |
|---|---|
| gross monthly income | $5,000 |
| Estimated monthly support | $1,350 |
Estimated monthly support by number of children
§ How Alaska calculates support
Alaska uses a percentage-of-income model under Civil Rule 90.3. When one parent has primary physical custody, the non-custodial parent pays a flat percentage of adjusted income — 20% (1 child), 27% (2), 33% (3), plus 3% for each additional child. Income is adjusted income (total income minus taxes, mandatory retirement/union dues, prior child-support/alimony actually paid, and work-related childcare). Notable features: a $50/month minimum, a high-income cap (adjusted income above $138,000 is excluded unless the other parent shows it should count), and shared/divided-custody offset formulas.
Content verified against official sources on 2026-08-09.
✦ How to open or modify a case in Alaska
- Apply for services with the Child Support Enforcement Division (CSED) or file a petition in court.
- Establish parentage (paternity) if the parents were not married — by voluntary acknowledgement or court order.
- Calculate the guideline amount using the CSED online calculator or the DR-305/306/307/308 worksheets based on custody type.
- The court enters a support order under Civil Rule 90.3, which also includes a medical-support provision.
- Payments are made through the support agency / income withholding; CSED can enforce the order.
- To change the amount, request a modification (showing a change in income, custody, or circumstances) and a new order is entered.
◈ Illustrative examples
Scenario: Obligor's adjusted monthly income is $4,000 (after taxes, mandatory retirement, and work-related childcare deductions). The custodial parent has the child at least 70% of the time (primary physical custody).
Walk-through: One child → 20% × $4,000 = $800/month base child support. Medical support is ordered separately.
Takeaway: Under Alaska Civil Rule 90.3, a noncustodial parent with $4,000/month adjusted income owes about $800/month for one child.
Scenario: Obligor's adjusted annual income is $180,000, which is above the $138,000 guideline cap, with one child.
Walk-through: Only the first $138,000 of adjusted income is used unless the custodial parent presents evidence the higher income should count. At $138,000/yr ($11,500/mo) for one child: 20% × $11,500 = $2,300/month base.
Takeaway: Alaska caps the income used in the formula at $138,000; the excess is excluded absent evidence it should be included.
? Frequently asked questions
↗ Official policy & agency links
Sources verified: https://courts.alaska.gov/shc/family/supportfaq.htm · https://childsupport.alaska.gov/child-support-enforcement/information/faqs/establishment-and-calculating-child-support-faq · https://www.courts.alaska.gov/sco/docs/sco1526.pdf
How Alaska calculates support
Alaska applies a flat percentage of the obligor’s gross income that rises with the number of children (20% / 27% / 33% for 1 / 2 / 3+).