Massachusetts's 183-Day Statutory Residency Rule
A home in Massachusetts plus more than 183 days there in the taxable year makes you a statutory resident, even if you live elsewhere. Here is exactly how the count works.
Last verified: July 2026
In short: Massachusetts treats you as a statutory resident if you both maintain a permanent place of abode in the commonwealth and spend more than 183 days (184 or more) in Massachusetts during the taxable year. This applies even if your permanent home is in another state or country. Any part of a day in Massachusetts counts, including days spent partially in and partially out of the state.
- Threshold
- More than 183 days (184+)
- Also required
- Permanent place of abode
- Counting window
- Taxable year (calendar year)
- A day counts if
- Any part of a day in MA
- Applies even if
- Domiciled elsewhere
- Legal basis
- Mass. Gen. Laws ch. 62, §1(f)
The rule
Massachusetts has two separate ways to be a resident: by domicile (Massachusetts is your true, permanent home) or by statutory residence. The 183-day rule is the statutory-residence test, and it has two conditions that must both be met:
- A permanent place of abode. You maintain a dwelling place in Massachusetts that is continually kept for your use. It does not have to be owned by you, and a home owned or leased by your spouse can count. Temporary quarters such as a camp, military barracks, dormitory or hospital room generally do not count.
- More than 183 days. You spend more than 183 days (184 or more) in Massachusetts during the taxable year. Exactly 183 days keeps you under the day test.
Meet both and you are a statutory resident, taxed by Massachusetts on your worldwide income, even if you are domiciled in another state or country.
How to count it
- Confirm you maintained a permanent place of abode in Massachusetts during the year.
- Count every day on which you were present in Massachusetts for any part of the day, including days spent partly in and partly out of the state.
- Add the days across the whole taxable year. Days do not need to be consecutive.
- If the total is more than 183 and the place-of-abode condition is met, you are a statutory resident for that year.
Example. You are domiciled in Florida but keep an apartment in Boston all year. Across the year you are physically in Massachusetts on 190 days, many of them just for part of the day.
Because any part of a day counts, all 190 days count. With a permanent place of abode plus more than 183 days, you are a Massachusetts statutory resident, taxed on your full income, despite being a Florida domiciliary.
Beyond the day count
The 183-day test is only the statutory route. Massachusetts can also tax you as a resident by domicile, which turns on where your true home and life are rather than a day count. A day spent in Massachusetts while on active duty in the U.S. armed forces is not counted toward the 183 days. And the "permanent place of abode" must be a genuine dwelling place kept for year-round use, not a temporary or institutional room.
Official source: Mass. Gen. Laws ch. 62, §1(f), explained on the Massachusetts Department of Revenue Legal and Residency Status in Massachusetts page.
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Get AtlasDays on the App StoreFAQ
How many days can you spend in Massachusetts without becoming a statutory resident?
Up to 183 days in the taxable year. At more than 183 days (184 or more), combined with a permanent place of abode in the state, you become a statutory resident.
What counts as a day in Massachusetts?
Any part of a day spent in Massachusetts counts, including days spent partially in and partially out of the state. A day spent there while on active duty in the U.S. armed forces is not counted.
Do you need a home in Massachusetts to be caught by the rule?
For the statutory test, 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.