Alaska Child Support Calculator
Estimate your monthly child support obligation under AS § 25.27.025 / Alaska Civil Rule 90.3. Enter your numbers below for an instant estimate with a step-by-step breakdown and statute citations.
What You'll Need
Gather these four figures first for an accurate Alaska estimate:
- Each parent's gross monthly income — recent pay stubs and last year's tax return are the best source.
- Number of children covered by the order.
- Parenting time — roughly how many overnights per year the child spends with each parent.
- Monthly health insurance and childcare costs for the children.
Alaska Child Support Calculator
This state uses the Percentage of Income model, which calculates support based solely on the obligor's (paying parent's) net income.
Based on AS § 25.27.025 / Alaska Civil Rule 90.3 · Effective October 16, 2023
Enter income details to see your estimate
How Alaska Calculates Child Support
Alaska determines child support using the Percentage of Income Model, the standard set out in AS § 25.27.025 / Alaska Civil Rule 90.3. Under this model, support is based primarily on the paying parent's income: a set percentage (which usually rises with the number of children) is applied to that parent's income to produce the obligation.
The calculator above applies that formula to the income and expense figures you enter and shows each step of the math, so you can see exactly how the estimate is built. Because every order ultimately runs through a judge, the guideline figure is a starting point rather than a guaranteed result — the sections below explain what goes into it and where real orders can differ.
Key Rules Behind the Alaska Formula
- Alaska uses Civil Rule 90.3, a Percentage of Income model applied exclusively to the obligor's adjusted annual income. The custodial parent's income does not affect the primary custody child support obligation.
- Primary custody percentages under Rule 90.3(a)(1): 20% for 1 child, 27% for 2, 33% for 3, 36% for 4, 39% for 5, 42% for 6 or more children.
- "Adjusted annual income" is gross income minus federal and state income taxes, Social Security and Medicare (FICA), mandatory union dues, mandatory retirement contributions, and voluntary retirement contributions up to 7.5% of total income.
- The income cap is $138,000/year ($11,500/month), effective October 16, 2023. For income above the cap, the court has discretion to apply the guideline percentage or a lower percentage to the excess. (The previous cap was $126,000/year.)
- A low-income adjustment applies when the obligor's total income is $30,000 or less: adjusted income = total income minus $7,500 (or actual mandatory deductions if greater). This was added effective October 16, 2023.
- Add-on expenses — health insurance premiums for the children and work-related childcare costs — are computed separately and added to the basic obligation, divided proportionally between parents. They are NOT deducted from the obligor's income.
- Shared custody under Rule 90.3(b) uses a different formula that considers both parents' incomes when the obligor has 110 or more overnights per year (approximately 30% of the time). This calculator computes primary custody only.
- Courts may deviate from the guideline amount only upon a finding by clear and convincing evidence that the amount would be manifestly unjust.
What Counts as Income
Child support guidelines are built on each parent's income, so the figure you enter matters more than any other input. Most states start from a broad definition of gross income that includes wages, salary, tips, commissions, bonuses, self-employment earnings, and many forms of government benefits, then subtract specific deductions to reach the income the formula actually uses.
Alaska's rules under AS § 25.27.025 / Alaska Civil Rule 90.3 spell out which deductions apply and whether the formula runs on gross or net income. The calculator's field labels tell you which figure to enter; when in doubt, use your most recent pay stubs and tax return, and confirm the details in the Alaska child support laws guide.
How to Establish a Child Support Order in Alaska
A child support obligation becomes enforceable only once a court or the state child support agency issues an order. Either parent can request one, and in Alaska, as in every state, the local child support agency that operates under the federal Title IV-D program can open a case, locate the other parent, establish paternity if needed, and ask the court to set support using the guideline formula.
When you apply, expect to provide proof of income for both parents, the child's information, and details about health insurance and childcare costs — the same inputs this calculator uses. Running your numbers here first gives you a realistic idea of the order amount before you file.
How Alaska Calculates Child Support
- •Alaska uses Civil Rule 90.3, a Percentage of Income model applied exclusively to the obligor's adjusted annual income. The custodial parent's income does not affect the primary custody child support obligation.
- •Primary custody percentages under Rule 90.3(a)(1): 20% for 1 child, 27% for 2, 33% for 3, 36% for 4, 39% for 5, 42% for 6 or more children.
- •"Adjusted annual income" is gross income minus federal and state income taxes, Social Security and Medicare (FICA), mandatory union dues, mandatory retirement contributions, and voluntary retirement contributions up to 7.5% of total income.
- •The income cap is $138,000/year ($11,500/month), effective October 16, 2023. For income above the cap, the court has discretion to apply the guideline percentage or a lower percentage to the excess. (The previous cap was $126,000/year.)
- •A low-income adjustment applies when the obligor's total income is $30,000 or less: adjusted income = total income minus $7,500 (or actual mandatory deductions if greater). This was added effective October 16, 2023.
- •Add-on expenses — health insurance premiums for the children and work-related childcare costs — are computed separately and added to the basic obligation, divided proportionally between parents. They are NOT deducted from the obligor's income.
- •Shared custody under Rule 90.3(b) uses a different formula that considers both parents' incomes when the obligor has 110 or more overnights per year (approximately 30% of the time). This calculator computes primary custody only.
- •Courts may deviate from the guideline amount only upon a finding by clear and convincing evidence that the amount would be manifestly unjust.
What Is the Average Child Support Payment in Alaska?
Estimated Average Monthly Payment
$1,129/month
Estimated Annual Total
$13,548/year
Alaska does not publish an official “average” child support payment. This estimate was calculated using the Alaska guideline formula above with median income data from the U.S. Census Bureau, American Community Survey (ACS) 2024 — Alaska Median Earnings. Your actual amount will differ — use the calculator above with your own numbers for a personalized estimate.
Assumptions used in this estimate
- •Obligor gross income of $5,000/month (~$60,000/year, Alaska median full-time earnings, Census ACS 2024)
- •Custodial parent gross income of $4,000/month (for comparison only — not part of primary custody formula)
- •2 children (27% of adjusted income under Rule 90.3(a)(1))
- •No mandatory union dues or special deductions
- •Federal taxes and FICA estimated by calculator
Data year: 2024
Important Legal Disclaimer
This calculator provides an estimate only based on Alaska's child support guidelines. Actual court-ordered amounts may differ based on factors not captured here, including special needs, shared custody arrangements, travel costs, and judicial discretion.
This is not legal advice. Consult a family law attorney for guidance specific to your situation.
How to Modify a Alaska Child Support Order
Child support orders are not permanent. Alaska courts can revisit an order when there has been a substantial change in circumstances — for example, a significant change in either parent's income, a change in custody or parenting time, or a meaningful change in the child's needs. Federal rules also entitle parents in IV-D cases to request a review periodically (often about every three years) even without a major change.
To estimate a new amount, re-run the calculator with the updated figures. If the guideline result is meaningfully different from your current order, that gap is often what supports a modification request — though only a court can actually change the order.
How Child Support Is Enforced in Alaska
Once an order is in place, Alaska has strong tools to collect it. The most common is income withholding: federal law requires most new orders to be paid through automatic wage garnishment, so payments are deducted from the paying parent's paycheck. When payments fall behind, enforcement can escalate to intercepting tax refunds, suspending driver's or professional licenses, placing liens on property, reporting the debt to credit bureaus, and, in serious cases, contempt-of-court proceedings.
Interest and penalties can accrue on unpaid support, so an order that goes unaddressed tends to grow rather than disappear. If your circumstances have changed, seeking a modification through the court is almost always better than simply paying less than the order requires.
Frequently Asked Questions
Is this Alaska child support calculator accurate?
It applies the official Alaska guideline formula from AS § 25.27.025 / Alaska Civil Rule 90.3 to the numbers you enter, so it gives a close estimate of a typical guideline order. It is not an official court calculation — a judge can order a different amount based on the specific facts of your case.
Can a judge order a different amount than the calculator shows?
Yes. The guideline figure is a presumptive starting point, but Alaska courts can deviate up or down when the standard amount would be unfair — for example, because of extraordinary medical or educational expenses, a child's special needs, or other obligations. The order the judge signs controls.
What income do I enter into the Alaska calculator?
Use the figures described by each field's label — generally your regular income from work and other sources. Alaska's guidelines define exactly which income counts and which deductions apply, so your most recent pay stubs and tax return are the best source for accurate numbers.
Is child support taxable in Alaska?
No. Under federal tax law, child support is not taxable income for the parent who receives it and is not tax-deductible for the parent who pays it. This is different from spousal support and does not change from state to state.
How long does child support last in Alaska?
In most cases child support continues until the child reaches the age of majority or finishes high school, but orders can extend longer — for instance, for a child with a disability. Check the Alaska child support laws guide for the specific rules that apply to your situation.
Disclaimer
This calculator provides estimates only and is not a substitute for legal advice. The actual amount ordered by a Alaska court may differ based on factors including but not limited to: the special needs of the child, travel expenses for visitation, extraordinary educational or medical expenses, the parents' other support obligations, and the court's discretion to deviate from the guidelines. For advice about your specific situation, consult a licensed Alaska family law attorney.
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