AK Family LawUpdated for 2026 Guidelines

Alaska Parenting Time & Custody Overnight Calculator

Calculate custody overnights, determine annual percentage split, and verify statutory qualification for child support reductions under Alaska Civ. R. 90.3(b).

Direct Answer · Custody Statutory Rule (2026)

In Alaska: Parenting time directly reduces child support obligations when a non-custodial parent reaches 110 overnights per year (30% timeshare) under Alaska Civ. R. 90.3(b). The court calculates relief using the shared custody formula (rule 90.3(b)). Standard rotational schedules such as 2-2-3 (182 nights) qualify for full shared-custody adjustments.

Statutory Citation: Alaska Civ. R. 90.3(b)Judicial Authority: Alaska Family Court GuidelinesLast Verified: October 2026

Parenting Time & Custody Overnight Calculator

Calculate annual overnights, time-sharing percentage, and state child support adjustment qualification.

Jurisdiction / State:

1. Select Parenting Schedule Pattern:

2 nights every other weekend across 26 fortnights = 52 overnights/yr (14.2%).

Summer Extra Nights:Additional summer block

Holiday Extra Nights:Thanksgiving / Winter break

Annual Time-Sharing Breakdown

Parent A (Non-Custodial)

52 nights

14.2%

Parent B (Primary)

313 nights

85.8%

Parent A: 14.2%Parent B: 85.8%

⚠️Alaska Statutory Threshold: 110 Nights (30%)

Below Threshold. Current schedule provides 52 overnights, which is 58 nights short of the 110-night threshold for Alaska. Standard sole custody support applies without automatic time-sharing discount.

Statutory Legal Reference: Alaska Civ. R. 90.3(b) — Shared Custody Formula (Rule 90.3(b)). In Alaska, overnights are counted under the following rule: A parent has shared physical custody if the child resides with that parent at least 30% of the year (110 overnights). An overnight requires the child to stay overnight and be fed and cared for by that parent.

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Alaska Legal Guidelines on Custody Overnights

Statutory Threshold

110 Overnights

Equal to 30% of annual parenting time

Legal Methodology

Shared Custody Formula (Rule 90.3(b))

Governed by Alaska Civ. R. 90.3(b)

Official Overnight Counting Rule in Alaska

A parent has shared physical custody if the child resides with that parent at least 30% of the year (110 overnights). An overnight requires the child to stay overnight and be fed and cared for by that parent.

Standard Default Possession Schedule

Standard alternating weekends, alternating holidays, and 4 to 6 weeks summer visitation (~90 overnights).

Court Evidence & Verification Checklist for Alaska

If you are requesting or defending against a child support reduction in Alaska family court based on shared physical care, prepare the following evidence:

Document all travel itinerary and boarding passes for Alaska inter-village or interstate transit.
Log subsistence food harvesting or seasonal camp periods if applicable.
Save contemporaneous text confirmations for deviations from the written parenting plan.

Alaska Custody Overnights FAQ

What is the overnight threshold for shared custody in Alaska?

Alaska Civ. R. 90.3(b) sets the threshold at 110 overnights (30% of the year). Once reached, support is calculated by cross-multiplying each parent's income percentage by 1.5 and offsetting obligations.

What happens if a parent fails to exercise their 110 overnights?

If a parent falls below 110 overnights over a 12-month period, the other parent may petition for an immediate modification back to primary custody support retroactive to when the pattern changed.

Data sources & methodology

Alaska Statutory AuthorityAlaska Civ. R. 90.3(b) — Official state guideline schedule and parenting time rules.
NCSL Custody GuidelinesNational Conference of State Legislatures — Shared Physical Custody and Parenting Time Models.
Alaska Family Court RulesLocal standard possession schedules, overnight definitions, and administrative calculation forms.

Methodology and citations are maintained by the ChildSupportFig editorial team. Where an official guideline schedule is not yet loaded, results are shown as model estimates and the source is stated as a reference schedule.

Not legal or financial advice. Child support is determined by a court based on your state’s official worksheet. Online estimators provide an informal planning figure only. Laws change — always confirm the current guideline with your state child support agency or a licensed family law attorney in your state before relying on any number.