South Dakota, North Dakota & Alaska Divorce Property Division: The Complete 2026 Guide

South Dakota takes the broadest possible approach to property division. Under SDCL §25-4-44, the court may divide ALL property owned by either spouse — including premarital assets, inheritances, and gifts. This is one of only a handful of states (along with Montana and North Dakota) that do not protect separate property from division.

The court applies 7 factors: (1) duration of marriage, (2) value of property, (3) ages of parties, (4) health, (5) competency to earn a living, (6) contribution to accumulation, and (7) income-producing capacity of assets. There is no presumption of equal division.

South Dakota has no state income tax and no minimum residency requirement — you simply need to be a resident when filing. For no-fault divorce (irreconcilable differences), your spouse must agree; if they object, you must prove one of 6 fault grounds.

South Dakota alimony is governed by case law with 6 factors: (1) marriage length, (2) ages and health, (3) earning capacity, (4) financial condition after property division, (5) station in life/social standing, and (6) relative fault in termination of the marriage.

Factor #6 is significant — South Dakota is one of the few states where fault directly impacts alimony awards. If one spouse was primarily at fault for the divorce, they may receive less alimony (or the other spouse may receive more).

South Dakota law also connects alimony closely to property division — the court may award additional property to one spouse to reduce or eliminate the need for ongoing alimony payments. There is no statutory formula and no cap.

North Dakota uses the Ruff-Fischer guidelines — case-law factors developed in Ruff v. Ruff and Fischer v. Fischer — for both property division and alimony. Under NDCC §14-05-24, the court may divide ALL property and debts equitably.

The Ruff-Fischer factors include: duration of marriage, earning potential and current income, each spouse's contributions (including homemaking and child-rearing), supporting the other spouse's career, property brought to the marriage, fault or misconduct, and other relevant circumstances. There is no 50/50 presumption.

North Dakota requires 6 months of residency before filing. No-fault divorce (irreconcilable differences) is available with no waiting period after filing. The state has a very low progressive income tax (1.1-2.5%).

Alaska is nationally unique for two reasons. First, it is the only state with opt-in community property (AS §34.77). Couples can choose community property treatment for specific assets via a written agreement — but without such an agreement, Alaska uses standard equitable distribution.

Second, Alaska's child support formula under Civil Rule 90.3 is one of the simplest in the country: 20% of the obligor's adjusted income for 1 child, 27% for 2, 33% for 3, plus 3% for each additional child. The annual income cap is $138,000 ($11,500/month). This is a percentage-of-obligor-income model similar to Texas, not an income-shares model.

Alaska divides marital property under AS §25.24.160(a)(4) using 8 factors — and explicitly does so WITHOUT regard to which party is at fault. The same factors generally apply to spousal support. Alaska has no state income tax and no minimum residency requirement.

The Permanent Fund Dividend (PFD) received during marriage is typically classified as marital property. Alaska PERS (Public Employees' Retirement System) and TRS (Teachers' Retirement System) pensions require a QDRO for division.

South Dakota: income shares child support (SDCL §25-7-6.2) on combined NET income with no state tax deduction, 7-factor property analysis covering ALL property, and 6-factor alimony with fault weighting.

North Dakota: income shares child support (NDCC §14-09-09.7) on combined NET income with ND's low state tax, Ruff-Fischer property analysis covering ALL property, and Ruff-Fischer alimony analysis.

Alaska: hard-coded Rule 90.3 child support (20/27/33/+3% of obligor adjusted income with $138K cap), 8-factor equitable distribution without regard to fault, and discretionary alimony analysis. Opt-in community property flagged if applicable.

All numeric outputs are produced by deterministic calculators, then Claude writes the narrative analysis. The numbers are auditable against the statute.