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State rules

North Dakota residency day rule.

If you keep a permanent place of abode in North Dakota and spend more than 210 days there, you're a resident.

Summary as of October 2026 · Not tax advice

Day linemore than 210 + home
Type of testDay count with a home test
Home in the state requiredYes
LawN.D. Cent. Code § 57-38-01
Official sourcewww.tax.nd.gov

What it means

Statutory residency tests apply on top of domicile. You can be domiciled elsewhere and still be taxed as a resident if you meet the test.

Keep the record

Whatever the rule, the person claiming not to be a resident usually has to prove it. Log every day, including travel days, and keep the receipts, boarding passes and photos that back it up. What auditors ask for.

States with the same kind of test

Questions

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

If you keep a permanent place of abode in North Dakota and spend more than 210 days there, you're a resident. Days alone aren't the whole story: domicile is a separate test.

Does a partial day in North Dakota count?

Most states with a day test count any part of a day in the state. Check the state's guidance for its exceptions.

Count your days

Free and private. Your log stays on your device.