How child support is calculated in Alaska

The formula, the official tool, and the rules for low incomes and health insurance.

Checked against official sources: Oct 25, 2026.

Short answer

Alaska figures child support as a percentage of the paying parent's income: 20% for 1 child, 27% for 2 and 33% for 3. When one parent has the children at least 70% of the year, the other parent pays a fixed percentage of his or her adjusted annual income (income after taxes and other mandatory deductions).

Model
Percentage of income
1 child
20%
Official calculator
Official Alaska child support calculator

Work out a starting number for Alaska

Enter the income and the number of children. We apply Alaska's guideline percentage. It is a starting point, not the amount a court or agency will order.

The numbers are worked out in your browser. Nothing you enter here is saved or sent.

Income after taxes and other mandatory deductions, for a year.

Enter the income and the number of children

What goes into support in Alaska

When one parent has the children at least 70% of the year, the other parent pays a fixed percentage of his or her adjusted annual income (income after taxes and other mandatory deductions). Shared, divided and hybrid custody use both parents' incomes and separate court forms.

Law: Alaska R. Civ. P. 90.3 (last amended by SCO 2004, effective October 16, 2023)

1 child 20%, 2 children 27%, 3 children 33%, plus 3% for each additional child (primary custody). The percentages apply to adjusted income up to $138,000 a year; above that the court may add more if just and proper.

Health insurance in Alaska

Every order must include medical support. Health insurance is required if either parent can get it at a reasonable cost; Indian Health Service eligibility is considered. Insurance costs and uncovered health expenses are split equally unless there is good cause, and a parent must repay the other's share within 30 days of getting the bill.

Law: AS 25.27.060(c)

How this kind of formula works

Percentage-of-income states start with one number: a share of income for each family size. Health insurance, child care and other rules can change the result.

Every state must have one set of child support guidelines, review them at least every 4 years, and use the guideline amount unless a written finding says it would be unjust.

Law: 45 CFR 302.56

The low-income rule in Alaska

Minimum order is $50 a month ($600 a year), with some exceptions. If your total annual income is $30,000 or less, your adjusted income is the lower of the normal calculation or your total income minus $7,500.

Law: Civil Rule 90.3(a)(5), (c)(3)

State guidelines may not treat time in jail or prison as choosing not to work, when support is set or changed.

Law: 45 CFR 302.56(c)(3)

In nearby states

Steps to a support amount in Alaska

  1. Gather income papers

    The formula needs each parent's income: use pay stubs and tax returns.

  2. Use the official tool

    Get the guideline amount from Official Alaska child support calculator.

  3. Add the extra costs

    Insurance and child care often go on top of the basic amount.

  4. Ask for an order

    Only a court or the agency can set the amount. Open a case with Alaska Department of Revenue, Child Support Enforcement Division (CSED) ((907) 269-6900) · Apply online

Where to get free help in Alaska

Questions about the Alaska guidelines

What formula does Alaska use for child support?

When one parent has the children at least 70% of the year, the other parent pays a fixed percentage of his or her adjusted annual income (income after taxes and other mandatory deductions). Shared, divided and hybrid custody use both parents' incomes and separate court forms.

What percentage of income is child support in Alaska?

1 child 20%, 2 children 27%, 3 children 33%, plus 3% for each additional child (primary custody). The percentages apply to adjusted income up to $138,000 a year; above that the court may add more if just and proper.

Where is the Alaska child support calculator?

Yes: Official Alaska child support calculator.

How does Alaska treat low incomes?

Minimum order is $50 a month ($600 a year), with some exceptions. If your total annual income is $30,000 or less, your adjusted income is the lower of the normal calculation or your total income minus $7,500.

How are medical costs shared in Alaska?

Every order must include medical support. Health insurance is required if either parent can get it at a reasonable cost; Indian Health Service eligibility is considered. Insurance costs and uncovered health expenses are split equally unless there is good cause, and a parent must repay the other's share within 30 days of getting the bill.

More for Alaska

Sources

Sources

Last checked: Oct 25, 2026.

Federal sources
Estimate support