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State rules

New Mexico residency day rule.

Being physically present in New Mexico for 185 days or more in the tax year makes you a resident.

Summary as of October 2026 · Not tax advice

Day line185 or more
Type of testDay count with a home test
Home in the state requiredNo
LawNMSA § 7-2-2
Official sourcewww.tax.newmexico.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 New Mexico without becoming a resident?

Being physically present in New Mexico for 185 days or more in the tax year makes you a resident. Days alone aren't the whole story: domicile is a separate test.

Does a partial day in New Mexico 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

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