Maine — Tax Residency Rule

Summary

Day threshold

More than 183 days

Window

Taxable year (usually the calendar year)

Also requires

A permanent place of abode in Maine

Domiciliary safe harbor

No Maine abode, abode elsewhere, ≤ 30 days

Effect

Taxed as a resident on income from all sources

Basis

36 M.R.S. §5102(5)

Maine treats you as a statutory resident if you are domiciled elsewhere but spend more than 183 days of the taxable year in Maine and maintain a permanent place of abode there; day 184 is the trigger. If Maine is your domicile, you are a resident regardless of days — unless you meet a safe harbor, such as keeping no Maine abode, having one elsewhere and spending no more than 30 days in Maine.

Who it applies to

This matters most if you are:

• A remote worker or frequent traveler spending long stretches in Maine while living elsewhere.
• A second-home owner who keeps a year-round Maine dwelling but claims residency in another state.
• A Maine domiciliary who has moved away or abroad and wants to be treated as a nonresident.
• A person moving to or from Maine mid-year whose days may straddle the calendar-year boundary.

The rule applies to individuals regardless of citizenship — it turns on domicile, physical presence and available housing in Maine, not on visa status or nationality.

The rule — and why it exists

36 M.R.S. §5102(5) defines a "resident individual" through two routes:

• Statutory residency (§5102(5)(B)). An individual not domiciled in Maine who “maintains a permanent place of abode in this State and spends in the aggregate more than 183 days of the taxable year in this State, unless the individual is in the Armed Forces of the United States”.
• Domicile (§5102(5)(A)). An individual domiciled in Maine is a resident regardless of how many days they spend there — subject to the two safe harbors written into the same paragraph.

Why the safe harbors matter: domicile does not change just because you leave. Maine's safe harbors give domiciliaries who have genuinely left an objective way to be treated as nonresidents, without having to prove a change of domicile — but the burden of showing every requirement is on the taxpayer.

Counting the days

1. 1Count each day you are in Maine during the taxable year (for most people, 1 January to 31 December).
2. 2Maine Revenue Services' Guidance to Residency Status counts any portion of a day in Maine as a full day for the 183-day test. The transit exception — a partial day spent in Maine solely in transit to a destination outside Maine — applies only to the foreign safe harbor.
3. 3The count resets at the start of each new taxable year — it is a fresh annual tally, not a rolling window.
4. 4You become a statutory resident once you exceed 183 days while also maintaining a permanent place of abode in the state.

Because the window is the taxable year, a single stay split across a year-end can leave you under the threshold in each individual year even if the trip itself is longer than 183 days.

The permanent abode test

The day count alone is not enough for statutory residency. In its safe-harbor guidance, Maine Revenue Services describes a permanent place of abode as a house, apartment, residential care facility, dwelling place or other residence that you maintain as a household for the entire year, whether or not you own it.

• It does not include a seasonal camp or cottage used only for vacations, a hotel or motel room, or a dormitory room used by a student during the school year.
• A place of abode is not "permanent" if it is maintained only during a temporary stay in Maine for a particular purpose.
• For the domiciliary safe harbor, Maine presumes you maintain a permanent place of abode in Maine if your spouse (unless legally separated) or minor children live in one there.

Examples

Example 1 — clearly a statutory resident

You own a year-round house in Portland and spend 200 days in Maine over the year while working remotely for an out-of-state employer. You exceed 183 days and keep a permanent abode, so both conditions are met and Maine taxes your income from all sources for that year.

Example 2 — over 183 days but no permanent abode

You spend 190 days in Maine but stay in short-term rentals and hotels, never maintaining a residence as a household for the year. The day count is exceeded, but without a permanent place of abode the statutory-resident rule does not apply.

Example 3 — a stay split across year-end

You keep a year-round Maine home and stay from 1 October to 30 April. Because the count is per taxable year, 92 days fall in the first year and 120 in the second (121 in a leap year), so you stay under 183 in each year and avoid statutory residency in both.

Exceptions & edge cases

• Domicile overrides the day count. If Maine is your domicile, you are a resident even with far fewer than 183 days, until you establish a new domicile elsewhere or meet a safe harbor.
• The general (30-day) safe harbor. A Maine domiciliary is treated as a nonresident for a year in which they maintain no permanent place of abode in Maine, maintain one elsewhere, and spend no more than 30 days in Maine in the aggregate.
• The foreign safe harbor. A domiciliary who, within any 548 consecutive days, is present in foreign countries for at least 450 days, is in Maine no more than 90 days, and keeps no Maine abode where a spouse (unless legally separated) or minor child is present more than 90 days — with pro-rated day limits in the partial years — is also treated as a nonresident for that period.
• Armed forces. The 183-day statutory route does not apply to members of the US armed forces.
• Part-year residents. Moving into or out of Maine mid-year can make you a part-year resident, taxed as a resident only for the portion of the year you lived in the state.

Common misconceptions

• "Under 183 days means I'm safe." False — if Maine is your domicile, you can be a resident with almost no days in the state unless a safe harbor applies.
• "The 183 days are all that matters." Statutory residency also needs a permanent place of abode; exceeding the day count alone is not enough without one.
• "Only my Maine income is taxed." A resident — statutory or domiciliary — is taxed on income from all sources for that year.
• "A summer cottage counts as an abode." Not if it is a seasonal camp or cottage used only for vacations — Maine Revenue Services excludes those expressly.

Frequently asked questions

Sources

• Maine Revised Statutes — Title 36 §5102 (definitions; "resident individual")
• Maine Revenue Services — Guidance to Residency Status (rev. February 2026)
• Maine Revenue Services — Residency "Safe Harbors" guidance (2024)
• Maine Revenue Services — Income/Estate Tax