Massachusetts Tax Residence: the rule, how days are counted, examples

Summary

Massachusetts treats you as a resident for income tax, even if you are domiciled in another state, when you maintain a permanent place of abode in Massachusetts and spend more than 183 days of the taxable year in the state. The law itself says that days spent partly in and partly out of Massachusetts count. Day 184 crosses the line. A resident is taxed on all income, and a nonresident only on Massachusetts income. Days on active duty in the armed forces are not counted. The Massachusetts Department of Revenue applies the test.

Limit: More than 183 days in Massachusetts (the 184th day crosses the line)
Period: The taxable year, for most people 1 January to 31 December
A day counts when: You are in Massachusetts for any part of the day, for any reason
Second condition: A permanent place of abode in Massachusetts
Law: M.G.L. chapter 62, section 1(f), explained in TIR 95-7
Run by: Massachusetts Department of Revenue

Who it applies to

People domiciled in New Hampshire or Rhode Island who rent an apartment in Boston for the working week.
People who moved their domicile to Florida and kept a winter-ready house on Cape Cod or in the Berkshires.
Students from other states who rent an ordinary off-campus apartment in Massachusetts.
People from abroad who take an open-ended job in Massachusetts and lease a home.

The rule

Chapter 62, section 1(f) of the Massachusetts General Laws defines a resident in two parts. The first is any person domiciled in the state. The second is any person who is not domiciled in Massachusetts but who maintains a permanent place of abode there and spends in the aggregate more than 183 days of the taxable year in the state, including days spent partially in and partially out of the state. This wording comes from chapter 38 of the Acts of 1995 and applies to tax years ending on or after 1 July 1995.

The Department of Revenue explained the change in Technical Information Release 95-7. For presence, a day is any part of a day spent in Massachusetts for whatever reason. The release names no exception for travel through the state.

The Department reads a permanent place of abode as a dwelling place continually maintained by a person, whether or not they own it, and it includes a dwelling owned or leased by the person's spouse. Whether you maintain one is a question of fact. The release lists places that generally do not count: a camp, military barracks, a dormitory room, a hospital room or a similar temporary institutional place, a dwelling with neither kitchen nor bathing facilities, a dwelling that is not prepared for winter, and a hotel or motel room, although hotels are judged on the facts.

A dwelling kept only during a temporary stay for a particular documented purpose is also not a permanent place of abode. The release defines a temporary stay as a period fixed in advance that is not longer than one year. If the stay is extended beyond that, it is no longer temporary. The Department looks at the whole situation, and a person who meets both conditions files the resident return, Form 1.

Why it exists

Before the 1995 change, residence in Massachusetts turned on domicile, which depends on intention. People with a home in the state and most of their year there could say their permanent home was in a state with no income tax, such as New Hampshire or Florida. The legislature added a test based on a maintained home and a count of days so that these cases can be decided on facts.

Counting the days

You count every day of the taxable year on which you were in Massachusetts for any part of the day, whatever the reason. Days on active duty in the armed forces are left out.

Check whether you or your spouse continually maintain a dwelling in Massachusetts that has a kitchen and bathing facilities and can be used in winter.
Check whether the dwelling is kept only for a temporary stay with a documented purpose and an end date fixed in advance within one year. If so, it is not a permanent place of abode.
Mark every day on which you were in Massachusetts for any part of the day, including arrival and departure days.
Remove days spent in the state while on active duty in the armed forces of the United States.
Add up the days. 184 or more, with the abode, makes you a resident for the taxable year.

How Countr counts it. Countr counts every calendar day on which your phone was in Massachusetts at any time, from 1 January to 31 December, against a limit of 183 days. This matches the Massachusetts rule closely, because the state counts any part of a day for whatever reason. Two things Countr cannot do: it cannot see whether you maintain a permanent place of abode, and it cannot remove days of active military duty, which the law does not count. Add this tracker only if you keep a home in the state.

Track Massachusetts Tax Residence on your phone.

Countr finds your past trips in your photos and keeps counting from there.

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Examples

Working week in Boston, home in New Hampshire

Erin is domiciled in Portsmouth, New Hampshire, and rents a flat in Boston all year. In 2026 she is in Massachusetts on 4 days a week for 46 weeks, which is 184 days. Her family, her vote and her car registration are all in New Hampshire. She still has a permanent place of abode in Massachusetts and more than 183 days, so she is a Massachusetts resident for 2026 and files Form 1.

An assignment of nine months

Jorge is domiciled in Illinois. His employer sends him to its Worcester office from 1 March to 30 November 2026, with the dates set in writing before he leaves. He rents a flat for that time and spends 240 days in Massachusetts. The stay has a documented purpose and a fixed length of less than one year, so the flat is not a permanent place of abode. He is taxed as a nonresident on his Massachusetts pay.

Half an hour across the border

Mei is domiciled in Providence, Rhode Island, and owns a winter-ready house in Falmouth. By 30 November 2026 she has 183 Massachusetts days. On 12 December she drives over the border to a shop in Seekonk for half an hour. A day spent partly in the state counts, so that is day 184, and she is a resident for the year.

Exceptions

A day spent in Massachusetts while on active duty in the armed forces of the United States is not counted as a day in the state.
A dwelling kept only during a temporary stay for a particular documented purpose, fixed in advance and not longer than one year, is not a permanent place of abode.
A dormitory room, military barracks, camp, hospital room or similar temporary institutional place is generally not a permanent place of abode.
A dwelling with neither kitchen nor bathing facilities, or one that is not prepared for winter, is generally not a permanent place of abode.
A dwelling you own but have leased for at least one year to people not related to you or your spouse, with no right for you to use any part of it and not used as your mailing address, is generally not your abode during the lease.
A university-owned studio open only to students, faculty and staff of the university is generally not a permanent place of abode, according to the Department.

Common misconceptions

“Massachusetts counts only nights.”: The statute counts days spent partially in the state, and the Department says any part of a day for whatever reason is a day. A short visit counts as one whole day.
“As a student I can never become a resident.”: A dormitory room is not a permanent place of abode, but the Department's own example treats an ordinary off-campus apartment shared with others as one. A student there for more than 183 days is then a resident.
“My New Hampshire domicile means Massachusetts can tax only my Massachusetts wages.”: If you keep a permanent place of abode in Massachusetts and spend more than 183 days there, you are a resident and taxed on all your income, whatever your domicile.
“A summer cottage always counts as an abode.”: A dwelling that is not prepared for winter is generally not a permanent place of abode. A house that can be used all year is.

Questions and answers

Does Massachusetts count partial days toward the 183 days?

Yes. The statute says the count includes days spent partially in and partially out of the state. The Department explains that a day is any part of a day spent in Massachusetts for whatever reason.

Does driving through Massachusetts count as a day?

The official guidance gives no exception for transit. It says any part of a day in the state for whatever reason is a day, so a careful count includes days when you only drove through.

How long can a work stay be before my flat becomes a permanent place of abode?

A temporary stay must have a documented purpose and a length fixed in advance of not more than one year. If the stay is extended past that, the Department no longer treats it as temporary.

Is 183 days exactly a problem?

No. The law needs more than 183 days. On 183 days you do not meet the day condition, and on 184 you do.

Which return does a statutory resident file?

The Department's guidance says a person whose legal residence is not in Massachusetts for the entire year, but who maintains a permanent place of abode there and spends more than 183 days in the state, files Form 1, the resident return.

Does a hotel room count as a permanent place of abode?

Generally not, but the Department says it decides hotel and motel rooms on the facts of each case. A room kept continually for one person for a long time is more exposed than short stays.

Sources

Other rules for United States

Arizona Tax Residence 273 days in each calendar year
California Tax — Visitors 181 days in each calendar year
California Tax Residence 273 days in each calendar year
Connecticut Tax — 30 Days or Fewer 30 days in each calendar year
Connecticut Tax Residence 183 days in each calendar year
Delaware Tax Residence 183 days in each calendar year
Hawaii Tax Residence 200 days in each calendar year
Idaho Tax Residence 270 days in each calendar year

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This page explains the rule and how the days are counted. It is not legal or tax advice. The authority decides each case on its own facts.