Massachusetts tax residency rules
Threshold: 183 days · Days + Abode · Calendar year (Jan 1 – Dec 31)
Massachusetts has a 5% flat tax plus a 4% surtax on income over $1 million (the Millionaire's Tax) since 2023. Residency is domicile + statutory residence (abode + 184 days). The DOR has expanded its residency audit program in response to the surtax.
- Effective 9% rate on the marginal dollar above $1M for MA residents.
- Logan (BOS) layovers may count if you cleared TSA on a MA-origin flight.
- Founders selling companies and executives exercising options face the highest audit risk.
Rules tracked by Tax Days
MA Statutory Residency
- Type
- Days + Abode
- Threshold
- 183 days
- Period
- Calendar year (Jan 1 – Dec 31)
Statutory resident if you spend more than the threshold days AND maintain a permanent place of abode in the jurisdiction.
Generally, if you keep a permanent place of abode in Massachusetts and spend in total more than 183 days of the year there, you are taxed as a resident. Any part of a day in the state usually counts as a full day.
MA DomicileInformational
- Type
- Facts & Circumstances
- Threshold
- No fixed threshold
- Period
- Calendar year (Jan 1 – Dec 31)
Residency determined by examining the totality of your connections, home, family, business, social ties, time spent. No fixed day threshold.
Generally, if Massachusetts is your domicile, you are taxed as a resident regardless of days.
Massachusetts tax residency, FAQ
How many days can I spend in Massachusetts before becoming a tax resident?
Generally, spending more than 183 days in Massachusetts during a calendar year can make you a tax resident, provided you also maintain a permanent place of abode there. Generally, if you keep a permanent place of abode in Massachusetts and spend in total more than 183 days of the year there, you are taxed as a resident. Any part of a day in the state usually counts as a full day.
How does Massachusetts count a day of presence?
Day-counting rules vary: many jurisdictions treat any part of a calendar day spent in-country as a full day, while others require presence at midnight. Because the burden of proof is usually on you, keep a contemporaneous, day-by-day record of where you were.
What tax year does Massachusetts use?
Massachusetts measures residency over calendar year (jan 1 – dec 31).
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