ALASKA SUPPORT GUIDELINE
Alaska child support calculator & worksheet
Alaska Civil Rule 90.3 does not use one universal worksheet. Primary, shared, divided, and hybrid custody each have their own calculation path, driven by adjusted annual income.
Current module status
| State | Alaska |
|---|---|
| Status | Active base worksheet module |
| Guideline model | percentage obligor adjusted annual income |
| Primary income field | Adjusted annual income |
How Alaska child support law works
Legal starting point. Alaska Civil Rule 90.3 uses a custody-specific guideline instead of one universal worksheet. The rule focuses on adjusted annual income and distinguishes primary, shared, divided, and hybrid custody arrangements. Read Alaska Civil Rule 90.3.
How the guideline is calculated
For primary custody, the paying parent’s adjusted income drives the base obligation. A different Rule 90.3 worksheet is needed when both homes meet the shared- or divided-custody definitions, so parenting arrangements matter before any number is relied on.
What this site’s worksheet covers
Primary custody worksheet only. Shared, divided and hybrid custody need separate Civil Rule 90.3 worksheets. Income above $138,000 is excluded from the basic calculation unless a court uses it under the rule.
Documents that make the worksheet more useful
DR-305 and the applicable primary, shared, divided, or hybrid custody worksheet. Gather the records that support the income, parenting-time, insurance, child-care, and other adjustment entries that apply to the family. Both parties are disclosed; the primary-custody base formula uses the paying parent’s adjusted income. The percentage increment for every additional child is implemented. Non-primary custody arrangements require the official worksheet.
For a filing or agreement, complete the official court forms linked on this page. They use the same guideline structure explained here, and the court applies it to the facts of the case.
Before you enter your numbers
Which Alaska custody worksheet fits my family?
Rule 90.3 distinguishes primary, shared, divided, and hybrid custody. A primary-custody percentage is not the shared-custody calculation. Shared custody generally requires each parent to have the children for at least 30 percent of the year; arrangements that differ between children may require the divided or hybrid method.
Prepare this: Count annual time for each child separately and bring the custody order. Identify any months when a different schedule applies before choosing the worksheet.
Read the relevant official instructions: Alaska Civil Rule 90.3.
These preparation notes explain one part of the state guideline. A new estimate does not change an existing order; a modification request does.
How Alaska cases actually get to a number
Alaska’s guideline is custody-specific. For primary custody, the paying parent’s adjusted annual income is the main driver of the base obligation. Shared or divided custody switches the family onto a different Rule 90.3 worksheet. Mixing those paths is the most common way an informal estimate goes wrong.
Alaska Civil Rule 90.3 does not use one universal worksheet. Primary, shared, divided, and hybrid custody each have their own calculation path, driven by adjusted annual income. That is a different path from neighboring states that use another model, so do not import a table, percentage, or overnight credit from somewhere else.
Parenting time in Alaska
The first drafting question in Alaska is which home is primary and whether both homes meet the shared- or divided-custody definitions. Overnight counts are not a minor credit; they can change which rule applies. Until that classification is settled, a primary-custody percentage should not be treated as the order.
Costs Alaska usually treats separately
- Health-care coverage and uninsured medical costs
- Child-care necessary for work or training
- Travel between homes in long-distance cases
- Education or extraordinary needs when the court includes them
When Alaska courts leave the guideline
Rule 90.3 allows a court to vary the formula for good cause, including unusual medical needs, a child’s independent income, or a parent’s unusually high expenses to exercise visitation. The variation has to be explained. Hardship is not a license to skip the correct custody worksheet.
Official Alaska forms to keep beside this guide
DR-305 and the applicable primary, shared, divided, or hybrid custody worksheet. Both parties are disclosed; the primary-custody base formula uses the paying parent’s adjusted income. The percentage increment for every additional child is implemented. Non-primary custody arrangements require the official worksheet. The primary authority is the published Alaska source. Fill the official form from source documents. Use this page only to check that you chose the right Alaska path—primary versus shared, table versus percentage, add-ons versus basic support.
Where this is typically filed
Superior Court hears most Alaska support matters; the Child Support Services Division handles IV-D establishment and enforcement. Remote communities and high travel costs show up often in the findings even when they do not change the base formula.
Questions specific to Alaska
Can I use the primary-custody formula if we almost share time equally?
Not safely. Shared and divided custody have their own Rule 90.3 calculations. Classify the schedule first.
Is Alaska based on monthly net pay?
The rule works from adjusted annual income with specified additions and deductions. A monthly net paycheck is only a starting clue.
Do Permanent Fund dividends count?
Alaska income definitions can reach dividends and other periodic payments. Check the current Rule 90.3 income list rather than assuming they are ignored.
Run the calculator
Open the free support calculator, select Alaska, complete the state worksheet, and print or export the output for review.
Example: each additional child changes the rate
Primary custody, six children and $60,000 in the paying parent’s adjusted annual income; no extended-visitation credit or deviation.
- Rule 90.3 starts with 33% for three children.
- Three additional children add 3 percentage points each, making 42%.
- $60,000 × 42% = $25,200 per year, or $2,100 per month.
The rate does not stop increasing at five children. The ordinary primary-custody calculation also has a $50 monthly minimum. Shared, divided and hybrid custody use different calculations.
Original educational illustration checked September 17, 2026 against Civil Rule 90.3(a)(2) and (c)(3). See what the calculation includes.