Use our free alaska child support calculator for 2026 to estimate guideline support under Alaska Civil Rule 90.3. This official alaska child support calculator uses the Percentage of Income model. Therefore, for primary custody cases, support is calculated as a percentage of the non-custodial parent’s adjusted annual income: 20% for one child, 27% for two children, and 33% for three or more children.
For example, Alaska is one of the few states that does not consider the custodial parent’s income in the basic primary custody calculation . In addition, Alaska provides a low-income adjustment using a $7,500 standard deduction for parents earning $30,000 or less, and a shared custody formula when both parents have 110 or more overnights per year . As a result, our alaska child support calculator gives you an accurate 2026 estimate in seconds.
Adjusted annual income • 20% 1 child, 27% 2, 33% 3+ • Shared custody 110+ overnights • $50 minimum
How Alaska Child Support Calculator Works Under Rule 90.3 in 2026
Alaska calculation depends on your custody arrangement when you use the alaska child support calculator. For primary custody, one parent has 256+ overnights and the other has fewer than 110.
The formula multiplies the non-custodial parent’s adjusted annual income by the applicable percentage. For shared custody, both parents have 110+ overnights, and the calculation considers both incomes and overnights. Because of this structure, the alaska child support calculator adapts to your parenting schedule.
Step 1 – Determine Adjusted Annual Income
Under Rule 90.3, adjusted annual income starts with total income including wages, salaries, overtime, bonuses, commissions, self-employment income, Permanent Fund Dividend, Social Security benefits, unemployment benefits, workers compensation, and military pay including allowances .
However, mandatory deductions are subtracted: federal, state, and local income taxes, Social Security, Medicare, mandatory union dues, and mandatory retirement contributions. Voluntary retirement contributions up to 7.5% are also deductible if tax-deferred . In addition, preexisting child support orders and reasonable child care expenses necessary to work are deductible. Therefore, adjusted income is net of mandatory obligations.
Learn more about other states with our Texas child support calculator which uses a flat percentage cap, and California child support calculator which uses the K-factor formula.
Step 2 – Primary Custody Percentage Formula
The alaska child support calculator applies the primary custody formula when one parent has 256 or more overnights per year and the other has fewer than 110 . The non-custodial parent pays a percentage of their adjusted annual income: 20% for one child, 27% for two children, 33% for three children, and 3% more for each additional child .
For example, if the non-custodial parent’s adjusted annual income is $52,000 with one child, annual support is $10,400 or approximately $867 per month . Therefore, the percentage applies directly to adjusted income.
Official rule source: Alaska Civil Rule 90.3 at https://courts.alaska.gov/rules/docs/civ.pdf
and Alaska Court System child support page at https://courts.alaska.gov/shc/family/support.htm
Step 3 – Shared Custody Formula (110+ Overnights)
Alaska uses a different formula when both parents have 110 or more overnights per year . The alaska child support calculator calculates what each parent would owe the other under the primary formula, then offsets the amounts.
The parent with the higher obligation pays the difference. For example, if Parent 1 would owe $800/month and Parent 2 would owe $300/month based on their respective incomes, the net transfer is $500/month from Parent 1 to Parent 2.
Therefore, shared custody often reduces the total support transfer compared to primary custody. Compare with Florida child support calculator that uses 73 nights threshold, and Ohio child support calculator with 90 nights 10% reduction.
Step 4 – Low-Income Adjustment and Minimum Support
Alaska added a low-income adjustment in 2023 for non-custodial parents with gross annual income of $30,000 or less . The alaska child support calculator must compare two methods: itemized deductions under the standard rule, and a $7,500 standard deduction from gross income.
The parent’s adjusted income is the lesser of the two calculations, resulting in lower support. In addition, the minimum child support is $50 per month even for low-income or unemployed parents .
Therefore, low-income parents are protected while still contributing. Compare with New York child support calculator which uses a Self-Support Reserve, and Pennsylvania child support calculator with a $30k high-income formula.
Step 5 – Health Insurance and Add-Ons
Basic support covers ordinary living costs, but health insurance for the children is addressed separately under Rule 90.3(d). The alaska child support calculator accounts for the cost of insuring only the children, not the parent. The court presumes insurance is reasonable if it costs 5% or less of the purchasing parent’s adjusted annual income .
The cost is typically split equally between parents. In addition, uncovered medical expenses are split equally, with expenses over $5,000 in a calendar year allocated based on relative financial circumstances . Therefore, add-ons are handled outside the basic percentage formula.
Official Alaska sources: Alaska Court System at https://courts.alaska.gov/shc/family/support.htm and Child Support Enforcement Division at https://childsupport.alaska.gov/
Alaska Child Support Calculator Example Calculation
Suppose Parent 1 (non-custodial) has adjusted annual income $52,000 and Parent 2 has primary custody with fewer than 110 overnights. For 1 child, the alaska child support calculator applies 20%: $52,000 × 0.20 = $10,400 annually or $867 monthly. For 2 children, 27%: $14,040 annually or $1,170 monthly.
If the parents share custody with both having 110+ overnights, the calculator computes each parent’s hypothetical obligation and offsets them. If Parent 1’s adjusted income is $52,000 and Parent 2’s is $30,000, the net transfer is lower than the primary custody amount. As a result, the alaska child support calculator reflects both custody arrangement and income.
Official Resources for Alaska Child Support Calculator
For official calculation, use the Alaska Child Support Enforcement Division (CSED) calculator at https://childsupport.alaska.gov/ or the court forms DR-305 (primary custody) and DR-306 (shared custody) available at https://courts.alaska.gov/shc/family/support.htm.
Apply via CSED online portal with a MyAlaska account. Modification threshold: 15% change in support amount per Rule 90.3(h) . SupportCalcUSA.com not affiliated with Alaska courts.