Short answer: if you are moving to Miami for the winter but keeping your home, your doctors and your life up north, the 183-day rule — snowbirds and state taxes, in one line — works against you, not for you. Florida charges US$0 state income tax and never counts your days. Your home state does: in New York, Minnesota and Massachusetts, keeping a home there and spending more than 183 days there makes you a statutory resident taxed on all your income, even if winter in Miami lasts 4 months. A January–April season is only 120 days — the other 245 days decide your tax bill.
Updated: October 13, 2026.
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Moving to Miami for the winter: the three different “183-day rules” snowbirds mix up
There is no single 183-day rule in US tax law. Three different tests share the number, and snowbirds lose money when they confuse them:
| The test | Who it applies to | What 183 days means |
|---|---|---|
| State statutory residency (NY, MN, MA and others) | US snowbirds keeping a home in a taxing state | Home in that state + more than 183 days there in the year = resident, taxed on worldwide income |
| State domicile | Everyone with ties to a taxing state | No day count at all — intent plus evidence; a domiciliary is taxed as a resident even at 100 days |
| Federal substantial presence test (IRS Publication 519) | Non-US citizens only | A weighted 3-year formula for US tax residency — it does not apply to US citizens at all |
The federal formula is the one most articles describe, and it is the one that does not decide a US snowbird’s state taxes. For the record, the IRS counts all of the current year’s days, one-third of last year’s and one-sixth of the year before: its own example shows 120 days a year for three years totals 180 weighted days and does not meet the test, while 122 days a year lands exactly on 183. Interesting — and irrelevant if you hold a US passport. The test that decides your bill is your home state’s, and it counts raw calendar days, not weighted ones.
The home-state math: what a 4-month Miami season really leaves you
Run the arithmetic for winter 2026–2027. January 1 to April 30, 2027 is 120 days in Florida. That leaves 245 days. If you spend essentially all of them back home in New York and you keep your New York home available to you, you clear the 183-day line by 62 days — you are a New York statutory resident, taxed by New York on your pension, your investments and everything else, exactly as if you had never left. Your Miami winter changed your weather, not your taxes.
- New York: statutory residency needs both prongs — a permanent place of abode maintained for substantially all of the year and more than 183 days in the state. Any part of a day counts as a full day. Top state rate 10.9%, plus 3.078%–3.876% if you are a New York City resident.
- Minnesota: keep an abode in Minnesota and spend 183 or more days there and you are a resident taxed on all income — the classic snowbird trap, because the Minnesota home is usually the one you own.
- Massachusetts: same structure — a permanent place of abode plus more than 183 days in the state.
To stay at or under 183 days in your home state while keeping a home there, at least 182 days of the year must be spent outside it — Florida days, travel days and time anywhere else all count toward that 182. A 120-day Miami season gets you two-thirds of the way; the other 62+ days have to come from somewhere: a longer season, travel, or time with family in a third state. And note the asymmetry I flag for every client: Florida days never create a Florida tax. There is no prize for passing 183 days in Florida — the count that matters runs in the state you are trying not to be taxed by.
Cost of living in Miami vs. the tax you do not save as a snowbird
This is where the cost of living in Miami conversation gets honest. A snowbird who keeps northern domicile pays the full northern tax bill and the full Miami season cost — our breakdown of the true cost of a 4-month snowbird season in Miami puts that at US$28,000–40,000 before the refundable deposit. The tax saving only appears if you eventually change domicile for real — a different decision, with its own evidence file, which I walk through in how to prove Florida domicile under the 183-day rule. Renting a winter place, however nice, is not that decision. Before you sign the seasonal lease, protect the cash you do put down: our security deposit guide explains how much Miami landlords can charge and when Florida law forces them to return it.
What most people don’t know
- You can be taxed as a resident of two states at once. Domicile in one state plus statutory residency in another means both can tax your worldwide income. Most states give a credit for taxes paid to the other state on the same income, but the credit does not always make you whole — city taxes and rate differences leak through.
- Part of a day is a day. Flying home for a long weekend, a wedding or a medical appointment adds full days to your home-state count. New York disregards only narrow cases, like a day spent boarding a plane, train or bus out of the state, or inpatient hospital days — and you still need records.
- Spending 183+ days in Florida does not make Florida your domicile. Domicile is intent proven with evidence — license, voter registration, a Declaration of Domicile under Florida Statute 222.17, where your doctors, advisors and sentimental belongings live. The calendar alone proves presence, not intent.
- The audit arrives years later. Residency audits typically look back 2–3 years and ask for the proof then. A contemporaneous day log — boarding passes, card receipts, toll records, phone location history — built during the season beats a reconstruction built after the audit letter.
- Giving up the northern home changes the test. In New York and Massachusetts the statutory test needs the home and the days. Sell or lease out the home on a real long-term lease and the statutory prong collapses — but domicile can still hold you if your life stays anchored there.
My SETTLE verdict: three snowbird profiles, three different answers
Profile 1 — the classic 4-month snowbird (120 Florida days, home kept up north). You remain a full tax resident of your home state. Budget Miami as a lifestyle cost, not a tax strategy, and do not let anyone sell you a “Florida tax saving” at this day count.
Profile 2 — the long-season snowbird (183+ days outside the home state). You can break statutory residency if you keep the home-state count at 183 or below — but only with a real day log, kept from day one, and a CPA who confirms your state’s exact test before the season starts, not after it ends.
Profile 3 — the snowbird quietly becoming a mover. If Miami is winning — you are extending seasons, your doctors are migrating, the northern home sits empty — you are no longer optimizing days, you are changing domicile. That is the moment to build the Florida evidence file deliberately, and it is exactly the transition I help clients sequence: housing first, paperwork in the right order, nothing left to an auditor’s imagination. If you are planning the season itself, start with our snowbird guide to a Miami winter and the full set of SETTLE guides for moving to Miami and the best neighborhoods in Miami.
Frequently asked questions
If I spend more than 183 days in Florida, do I stop paying my home state’s tax?
Not by itself. Florida never taxes you, but your home state stops taxing you as a resident only when you fail its test — either its day count (183 or fewer days there, if you keep a home) or, more fundamentally, its domicile test. Plenty of snowbirds pass 183 Florida days and still owe their home state in full because 200+ of their remaining days are spent there.
Does the IRS 183-day formula apply to me as a US citizen snowbird?
No. The substantial presence test in IRS Publication 519 classifies non-US citizens for federal purposes. US citizens are taxed federally regardless of where they spend the year, and your state bill is decided by your state’s own domicile and statutory-residency rules.
What records should I keep during the season?
A dated day log backed by documents you do not create yourself: boarding passes, credit-card receipts showing where you were, toll and parking records, and your phone’s location history. Keep them for at least the audit window your state uses — practitioners plan on 3 years.
Can both states really tax all my income in the same year?
Yes — dual residency is legal and common for snowbirds who trip a statutory test in a state that is not their domicile. Credits for taxes paid to the other state reduce the double hit on the same income, but rarely erase it completely. Model your exact case with a CPA before you extend a season for tax reasons.
This article is general information about relocation planning, not tax or legal advice. State residency rules differ and change — confirm your state’s current test with a tax professional before relying on a day count.
Yara Coker — SETTLE, relocation services in Miami.
Want help with your move to Miami?
Tell me your winter window and where home base is — I will line up furnished seasonal options and flag, before you sign, what your day count means for the lease length you actually need.
Sources
New York statutory residency and domicile (more than 183 days plus a permanent place of abode; any part of a day counts; domicile change must be clear and convincing): New York State Department of Taxation and Finance, Instructions for Form IT-203. Minnesota statutory residency (abode plus more than half the year, 183+ days): Minnesota Revenue Fact Sheet 1, Residency, and Minnesota House Research summary. Massachusetts statutory residency (permanent place of abode plus more than 183 days): Massachusetts Department of Revenue residency guidance. Federal substantial presence test and the 120-day worked example (120 + 40 + 20 = 180): IRS Publication 519, U.S. Tax Guide for Aliens. Florida: no individual income tax, Florida Constitution Article VII Section 5; Declaration of Domicile, Florida Statute 222.17. Season length (January 1–April 30, 2027 = 120 days) and the 182-day complement computed for this guide, October 13, 2026.
Versión en español: Vivir en Miami: snowbirds y la regla de los 183 días — cómo define tus impuestos estatales
