Child Support in Alaska: How Much Will You Owe?

Quick answer: it depends on both parents' incomes, how many children you have, and the parenting schedule. The calculator on this page turns those numbers into a real guideline estimate in about a minute. It is an educational estimate, not legal advice, and the judge always sets the final amount. FamilyCourtHelp.com is a self-help resource, not a law firm.

Wondering how much child support you will owe or receive in Alaska? The state uses one formula everywhere, so the same math applies in every municipality. This page explains how it works, lets you run a live estimate, and links to a dedicated page for each municipality at the bottom.

Alaska uses a flat Percentage of Income model under Civil Rule 90.3. Support is calculated as a fixed percentage of the non-custodial parent's adjusted income, 20% of adjusted income for one child, 27% for two, 33% for three. The custodial parent's income is generally not factored into the base obligation.

What counts as income? Alaska runs the formula on income after certain allowed deductions are taken out. Adjusted annual income is total income from all sources minus federal, state, and local taxes, mandatory retirement, union dues, and existing child or spousal support actually being paid. The Permanent Fund Dividend is included in income.

Parenting time matters directly in Alaska: the number of overnights each parent has changes the math itself. Alaska's base formula is built around one parent paying a flat percentage of adjusted income, so for most schedules the obligor's parenting time does not lower the number. The big shift happens at shared physical custody, defined as the obligor having the child for at least 30% of overnights, which triggers a separate shared-custody formula under Civil Rule 90.3 that accounts for both parents' incomes and time. Hybrid arrangements with multiple children split between homes are also addressed in Rule 90.3. The calculator on this page is only an estimate, so run your real overnight count through the official worksheet.

When does it end? Support generally ends at age 18, but extends to age 19 if the child is unmarried, actively pursuing a high school diploma or its equivalent, and living as a dependent with a parent or guardian.

Can the amount change later? Either parent or CSSD can request modification when the new calculation differs from the existing order by at least 15%. Petitions are filed in the court that issued the order or processed administratively through CSSD.

If payments fall behind, Alaska has real enforcement tools. CSSD enforces orders through immediate wage withholding, Permanent Fund Dividend interception, license suspension, federal and state tax refund interception, and civil contempt referrals to court.

Child support cases in Alaska are generally handled through the state's Superior Court, and Alaska Child Support Services Division (CSSD) runs the state's child support services program. Forms and local practice can vary, so confirm the current details with your local court or the agency.

The calculator on this page is the same live engine behind our full Child Support Calculator. Enter both incomes, the number of children, and the overnight split, and the estimate updates instantly. The full calculator page adds extras like health insurance, child care costs, and saved scenarios.

Bottom line for Alaska: the guideline number comes from incomes, children, and parenting time. Run the estimate on this page, keep your paperwork honest and complete, and let the court confirm the final amount.

Frequently asked questions

How much child support will I owe in Alaska?

There is no flat amount. Alaska uses the Percentage of Income (Flat) model under Alaska R. Civ. P. 90.3, so the number depends on both parents' incomes, the number of children, and the parenting schedule. The calculator on this page gives you a guideline estimate, and the court sets the final amount.

When does child support end in Alaska?

Generally age 18, or up to age 19 if the child is unmarried, actively pursuing a high school diploma, and living as a dependent of a parent.

Can the child support amount be changed later in Alaska?

Usually yes, when circumstances change enough. Alaska R. Civ. P. 90.3(h): a change of 15% or more between the existing order and a new guideline calculation is presumed a material change of circumstances.

Who handles child support cases in Alaska?

Cases are generally heard in the state's Superior Court, and Alaska Child Support Services Division (CSSD) handles services like locating parents, establishing orders, and collecting payments.