Connecticut · CT

Connecticut residency audits: 183-day rule, abode test, and the Greenwich playbook

Connecticut audits high-earning residents who relocate to Florida or Texas with surprising aggression. Here's the 183-day statutory rule, abode test, and what auditors look for.

9 min read

Connecticut's top income tax rate is 6.99%. The state houses some of the highest median incomes in the country, Greenwich, New Canaan, Westport. When those residents move to Florida, Connecticut's Department of Revenue Services (DRS) audits them at high rates, especially when the resident kept a Connecticut home.

Connecticut's residency tests

Connecticut treats you as a resident under either of two tests:

  • Domicile-based: Connecticut is your true, permanent home.
  • Statutory residence: you maintain a permanent place of abode in Connecticut for the entire tax year AND spend more than 183 days there.

Connecticut's permanent place of abode

A 'permanent place of abode' under Connecticut law is a dwelling permanently maintained by you that is suitable for year-round use. Like New York, you don't need to own it or even sleep there. A house you maintain in Greenwich, available year-round, with utilities and furniture, is an abode whether or not you visit.

Connecticut requires the abode to be maintained for the entire tax year. If you sell the house mid-year, the statutory residence test fails for that year (though domicile can still catch you).

What counts as a Connecticut day

Any portion of a calendar day spent in Connecticut counts as a full day. There are limited exceptions for travel days where Connecticut was solely a connecting point, days in CT for medical treatment, and military service days.

Domicile change: what CT looks at

If you claim you've changed domicile from Connecticut to Florida, the DRS will examine:

  • Family location, where your spouse and minor children live.
  • Business and employment, where your work is performed.
  • Time spent, day count in CT vs. new state.
  • Connections, voter registration, driver's license, doctors, dentists, banks.
  • Items of significance, heirlooms, artwork, vehicles, pets.
  • Social ties, clubs, religious institutions, recreational memberships.

The Greenwich playbook

High-earning Connecticut residents moving to Florida typically follow a multi-year playbook:

  • Year 0: buy or lease a Florida home, file Declaration of Domicile, surrender CT driver's license.
  • Year 1: spend 200+ days in Florida, ≤165 in CT. Move primary doctors, dentists, and accountants. Update voter registration. File a part-year CT return.
  • Years 2–3: maintain the same pattern. File full-year FL non-resident posture, no CT return except for any CT-source income.
  • Year 3+: expect CT residency audit; have contemporaneous records ready.

Common Connecticut-departure mistakes

  • Keeping the Greenwich house. Year-round availability triggers the statutory residence test if you also spend 184+ CT days.
  • Spouse stays back. A spouse with a CT job and CT home is a major weight against your domicile change.
  • Maintaining CT business interests. An LLC operated from CT, even nominally, is a tie.
  • Country club memberships. Auditors will count these.

Connecticut's DRS shares data with neighboring states (NY, NJ, MA). If you tell CT you moved to Florida and spend 200 days a year in NYC, both states will compare notes.

Track CT days from day one

Tax Days tracks CT, FL, NY, and any other state simultaneously. The dashboard shows your day count per state, projects when you'd cross any threshold, and exports an audit-ready PDF.

FAQ

Frequently asked questions

What makes you a Connecticut tax resident?

Connecticut generally treats you as a resident under either of two tests: domicile, meaning Connecticut is your true permanent home, or statutory residence, meaning you maintain a permanent place of abode in Connecticut for the entire tax year and spend more than 183 days there. Meeting either one is typically enough.

What counts as a permanent place of abode in Connecticut?

A permanent place of abode is a dwelling you permanently maintain that is suitable for year-round use. Like New York's rule, you generally don't need to own it or even sleep there: a furnished house in Greenwich with utilities, available year-round, is typically an abode whether or not you visit.

How does Connecticut count days for the 183-day test?

Any portion of a calendar day spent in Connecticut generally counts as a full day. There are limited exceptions for travel days where Connecticut was solely a connecting point, days spent in the state for medical treatment, and military service days.

Does selling my Connecticut home mid-year stop statutory residency?

Connecticut requires the abode to be maintained for the entire tax year, so if you sell the house mid-year, the statutory residence test generally fails for that year. The domicile test can still catch you, though, so severing ties and documenting the move still matters.

Does Connecticut share residency audit data with other states?

Yes, the Department of Revenue Services shares data with neighboring states including New York, New Jersey, and Massachusetts. If you tell Connecticut you moved to Florida but spend 200 days a year in New York City, both states are likely to compare notes.

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