The rule everyone repeats: spend 183 days in a state and you're a resident, taxable there like anyone who lives there. It's real. But it's only half the test — and the missing half is exactly the one that lets full-time travelers off the hook far more often than they realize.
Statutory residency takes two things, not one
Most states that use a 183-day line require both: the day count over the threshold, and a permanent place of abode in the state — a dwelling suitable for year-round use that's available to you. Both. Not either.
183 days is only half the test.
A house-sitter, a hotel guest, someone living out of a vehicle typically has no permanent place of abode anywhere. So the day count on its own usually doesn't make you a statutory resident. "I was there more than 183 days, so I'm a resident" is frequently wrong for exactly this audience — which is the whole reason to read past the headline. (Your domicile is a separate question; more below.)
The exceptions worth knowing
Roughly 20–25 states use a 183-day statutory-residency test, and most also require the abode. Two you should know because they break the pattern:
- Maryland — 183 days, no home required
- Maryland is the exception: the day count alone can make you a statutory resident, with no permanent-abode requirement. If you're stacking up days in Maryland, the "I don't have a place here" defense doesn't apply.
- New York — the real line is 184, not 183
- New York's threshold is 184 days — exactly 183 keeps you a nonresident (NY Comp. Codes R. & Regs. tit. 20 §105.20). New York also requires the abode be maintained for a substantial part of the year. And note: any part of a day counts as a day in New York, arrival and departure included.
Domicile and statutory residency are two separate doors
This is the distinction that trips people up. There are two independent ways a state can call you a resident, and you can walk through either one:
- Domicile
- Your one true permanent home — the place you intend to return to. You have exactly one at a time, and it doesn't change until you affirmatively establish a new one. It's judged on facts: where you're registered to vote, licensed, where your vehicle is registered, your banking, family, professional licenses, doctors. Intent shown through ties.
- Statutory residency
- Purely mechanical: day count + abode, as above. It ignores intent entirely.
You can be domiciled in one state and a statutory resident of another in the same year — and both can tax your worldwide income. Credits between states often don't fully resolve the overlap. For someone who left a state but never firmly landed a new domicile, the old state can keep claiming them for years on domicile alone, no day count needed.
The nine states with no personal income tax
A useful simplification: in these nine states there's no broad personal income tax, so the 183-day residency test is moot for income tax — days there don't create a state income-tax residency problem.
This is also why nomads who want a clean tax home tend to establish domicile in one of them — South Dakota, Florida, and Texas are the common picks. (The how-to for that lives in the Playbook, not here — this guide is the rules, not my setup.)
Residency is actually three different clocks
One more thing worth internalizing: even within a single state, "residency" is at least three separate questions, each with its own trigger and its own clock — tax (day count + abode), vehicle registration, and driver's license. Crossing one does not mean you've crossed the others, and the shortest clock is usually not the tax one. California is the sharpest example — its vehicle rule can trigger on being your most-days state, not on 183 days at all.
So what should you actually check
1. Do you have a permanent home available to you year-round in the state? If not, the statutory day-count test generally can't bite on days alone — Maryland aside.
2. Where is your domicile? That's taxed separately, it's about intent and ties, and an unresolved old domicile is the thing most likely to follow you.
3. Mind the exceptions. Maryland needs no home; New York's line is 184; no-income-tax states take the question off the table entirely.
The day count is the one hard number in all of this — and it's easy to lose track across a year of moving. Two free tools handle it:
Sojourn tallies your days by state and flags the 183-day line with the abode question built in; Latitude looks forward and tells you what crossing it would trigger. Both run entirely in your browser — nothing is sent anywhere.
Sources
New York Dept. of Taxation & Finance and NY Comp. Codes R. & Regs. tit. 20 §105.20 (184-day threshold; part-day counting) · Comptroller of Maryland (183-day statutory residency, no abode requirement) · general statutory-residency and domicile principles as applied across the ~20–25 states using a 183-day test.Not legal, immigration, or tax advice. This guide explains how the rules generally work and points you at official sources; it is not a substitute for a qualified advisor, and state rules vary and change. Residency turns on your specific facts — your domicile, your ties, and each state's own definitions — not day-counts alone. The "last checked" date above is when this page was last verified. Confirm anything that matters with the relevant state tax authority or a professional before you rely on it.