Do you need a home in North Dakota to be a statutory resident?

Yes. The 7-month rule requires both a permanent place of abode, a dwelling with cooking and bathroom facilities suitable for year-round living, and more than 210 days in North Dakota. Days alone, without a qualifying place of abode, do not make you a statutory resident, though separate domicile rules can.

North Dakota's 7-Month (210-Day) Statutory Residency Rule

Q: How many days can you spend in North Dakota without becoming a statutory resident?

Up to 210 days in the tax year. Spending more than 210 days (about seven months) in North Dakota, while maintaining a permanent place of abode there, makes you a statutory resident even if you are domiciled elsewhere. The threshold is 210 days, not 183.

Q: What is the North Dakota 7-month rule?

The 7-month rule is North Dakota's statutory residence test. If you maintain a permanent place of abode in the state and spend in the aggregate more than seven months, which the state equates to 210 days, of the tax year in North Dakota, you must file as a full-year resident even if you were domiciled in another state.

A home in North Dakota plus more than 210 days there in a tax year makes you a statutory resident, even if you live elsewhere. Here is exactly how the count works.

Last verified: July 2026

In short: North Dakota treats you as a statutory resident if you both maintain a permanent place of abode in the state and spend in the aggregate more than 210 days (about seven months) in North Dakota during the tax year. This applies even if your permanent home is in another state or country. Note the threshold is 210 days, not 183.

Threshold: More than 210 days (~7 months)
Also required: Permanent place of abode
Counting window: Tax year (calendar year)
A day counts if: Present in ND that day
Applies even if: Domiciled elsewhere
Legal basis: N.D. Cent. Code §57-38-01(11)

The rule

North Dakota has two separate ways to be a resident: by domicile (North Dakota is your true, permanent home) or by statutory residence, known locally as the 7-month rule. The 7-month rule has two conditions that must both be met:

A permanent place of abode. You maintain a house, apartment, or other dwelling with cooking and bathroom facilities that is suitable for year-round living, kept on a permanent or indefinite basis. It does not have to be owned, and you do not have to live in it full time.
More than 210 days. You spend in the aggregate more than 210 days, which North Dakota equates to more than seven months, in the state during the tax year. This is a higher bar than the 183-day line used by many states.

Meet both and you must file as a full-year North Dakota resident, taxed on your income, even if you were domiciled in another state for the entire year.

How to count it

Confirm you maintained a permanent place of abode in North Dakota during the tax year.
Count every day on which you were present in North Dakota during the year.
Add the days across the whole tax year. Days do not need to be consecutive; the count is in the aggregate.
If the total exceeds 210 days and the place-of-abode condition is met, you are a statutory resident for that year.

Example. You are domiciled in Texas but keep an apartment in Bismarck all year. Across the year you are physically in North Dakota on 220 days.

With a permanent place of abode plus more than 210 days in the state, you must file as a full-year North Dakota resident, despite being a Texas domiciliary. Had you stayed 200 days, you would not have crossed the 7-month line.

Beyond the day count

The 7-month rule is only the statutory route. North Dakota can also tax you as a resident by domicile, which turns on where your true home and life are rather than a day count. The 7-month rule also carries carve-outs: it does not apply if you were a part-year North Dakota resident, a full-year nonresident serving in the U.S. armed forces, or a full-year resident of Montana or Minnesota covered by reciprocity.

Official source: North Dakota Office of State Tax Commissioner, Resident residency guidance, reflecting N.D. Cent. Code §57-38-01(11).

AtlasDays tracks North Dakota's 7-month residency rule automatically

Log your trips once. AtlasDays counts your days in North Dakota for each tax year, privately on your iPhone, and warns you before you cross the 210-day line.

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FAQ

How many days can you spend in North Dakota without becoming a statutory resident?

Up to 210 days in the tax year. Beyond 210 days, about seven months, combined with a permanent place of abode, you must file as a full-year resident. The threshold is 210 days, not 183.

What is the North Dakota 7-month rule?

It is the state's statutory residence test: a permanent place of abode plus more than seven months, which the state equates to 210 days, in North Dakota during the tax year makes you a full-year resident even if you were domiciled elsewhere.

Do you need a home in North Dakota to be caught by the rule?

For the 7-month rule, yes. Without a permanent place of abode there is no statutory residence on days alone, though separate domicile rules can still make you a resident.