North Dakota — Tax Residency Rule
Summary
- Day limit
- 210 days
- Window
- Calendar year
- Triggers on
- Day 211
- Also requires
- A permanent place of abode
- Effect
- Taxed as a state resident
North Dakota treats you as a statutory resident for income tax if you maintain a permanent place of abode in the state and spend more than seven months — more than 210 days, as the Tax Commissioner puts it — there during the tax year. To stay outside statutory residency, keep your days in North Dakota at 210 or fewer — the status triggers on day 211. A separate domicile test can also make you a resident regardless of the day count.
Who it applies to
This matters most if you are:
- A remote worker or frequent traveler who spends long stretches of the year in North Dakota.
- Someone who owns or rents a home in North Dakota while living or working partly in another state or country.
- A seasonal or cross-border resident splitting time between North Dakota and a neighboring state.
The test applies to individuals based on physical presence and a maintained home — not on citizenship or visa status.
The rule — and why it exists
North Dakota defines residency for income tax through two independent routes:
- Statutory residency. N.D.C.C. § 57-38-01 covers anyone who maintains a permanent place of abode in the state and spends in the aggregate more than seven months of the income year there; the Tax Commissioner treats that as more than 210 days. Both conditions must be met, and you then file as a full-year resident.
- Domicile. If North Dakota is your true, fixed, and permanent home, you are a resident regardless of the day count — even if you spend most of the year elsewhere.
Why it exists: states use physical presence and a permanent home as proxies for where your economic life really sits. Pairing the day count with the abode requirement stops people from keeping a base in North Dakota while claiming nonresidency purely by watching the calendar.
Counting the days
- 1Count every day you are physically present in North Dakota during the calendar year (1 January to 31 December).
- 2North Dakota doesn't define a partial day, so counting any day in the state as a full day is the cautious approach.
- 3The count resets to zero at the start of each new calendar year — it is not a rolling 12-month window.
- 4You cross the line on day 211, at which point statutory residency applies for that tax year.
Because the window is the calendar year, days do not carry over between years. Exceeding 210 days only makes you a statutory resident when the permanent-place-of-abode condition is also met at the same time.
Examples
Example 1 — clearly a statutory resident
You rent a year-round apartment in Fargo and are physically present in North Dakota for 230 days during the year. You maintain a permanent place of abode and exceed 210 days, so you are a statutory resident for that tax year.
Example 2 — abode but not enough days
You keep a lake house in North Dakota but spend only about 150 days there, living the rest of the year in another state. You do not meet the 210-day threshold, so the statutory test is not triggered — though you should still check the domicile test.
Example 3 — lots of days but no abode
You work a long project in North Dakota for 220 days but stay in short-term hotels and maintain no home suitable for year-round living in the state. Without a permanent place of abode, exceeding 210 days does not, on its own, make you a statutory resident.
Exceptions & edge cases
- Domicile overrides the day count. If North Dakota is your true, fixed, and permanent home, you are a resident even if you spend fewer than 211 days in the state.
- Who the 7-month rule doesn't apply to. The Tax Commissioner lists three groups: part-year residents who moved into or out of North Dakota and established a permanent home elsewhere, full-year nonresidents serving in the U.S. armed forces, and Minnesota or Montana residents covered by the income tax reciprocity agreements.
- What counts as an abode. A house, apartment or other dwelling with cooking and bathroom facilities, suitable for year-round living and maintained on a permanent or indefinite basis.
Common misconceptions
- "Under 211 days means I'm definitely safe." Not necessarily — the separate domicile test can make you a resident regardless of how few days you spend in the state.
- "The 210 days roll over a 12-month period." No — the count is per calendar year and resets to zero on 1 January.
- "Owning a home in North Dakota alone makes me a resident." Not by itself — the abode must combine with more than 210 days of presence, or with domicile, to create residency.
Frequently asked questions
It keeps you out of statutory residency under the day-count test, which triggers on day 211. But you can still be a resident under the separate domicile test if North Dakota is your true, fixed, and permanent home — the day count does not override domicile.
It is a calendar-year count, from 1 January to 31 December. The tally resets to zero each new year and days do not carry over between years.
The Tax Commissioner defines a permanent place of abode as a house, apartment or other dwelling with cooking and bathroom facilities, suitable for year-round living and maintained on a permanent or indefinite basis. The definition turns on the dwelling and on its being maintained; it sets no separate occupancy requirement — the 210-day count is what measures your presence.
North Dakota's statute and the Tax Commissioner's guidance don't say how partial days are treated. Counting any day you are physically in North Dakota as a full day is the cautious way to track the 210-day line.
As a resident you are subject to North Dakota income tax on your income for that tax year. A part-year or nonresident may instead be taxed only on North Dakota-source income, so the residency line matters for how much of your income the state can reach.
Yes. Someone domiciled elsewhere can still be caught as a statutory resident purely by maintaining a permanent place of abode in North Dakota and spending more than 210 days there in the year.
This rule is tracked automaticallyin
Bounded
- Automatically tracks your days for this rule
- Alerts you before you cross the limit
- Records border-crossing days in both countries
- Runs alongside your other visa, tax, and residency rules
Sources
Related rules
For information only. This page is a plain-English summary of publicly available rules, not tax, legal, or immigration advice. Rules change and depend on your personal circumstances — always confirm with the official source above and a qualified professional before acting.