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Every year, thousands of Long Island and New York City residents make the move to Florida seeking warmer weather, no state income tax, and a lower cost of living. But changing your legal domicile from New York to Florida is not as simple as buying a condo in Boca Raton and spending a few months there. New York State is notoriously aggressive about auditing former residents who claim Florida domicile, and the financial stakes of getting it wrong are significant.

At JRH & Associates in Garden City, we have helped dozens of Long Island clients navigate this transition successfully. Here is what you need to know before you make the move.

Domicile vs. Residency: What Is the Difference?

New York State draws a sharp distinction between domicile and statutory residency, and understanding both is critical.

Your domicile is the place you intend to make your permanent home. You can only have one domicile at a time. Changing your domicile requires more than just buying a home in another state. New York will look at the totality of your life to determine where your true permanent home is.

Your statutory residency is a separate test based on physical presence. Even if you successfully change your domicile to Florida, New York can still tax you as a statutory resident if you maintain a permanent place of abode in New York and spend more than 183 days in the state during the tax year.

The 183-Day Rule

If you maintain a permanent place of abode in New York (which includes a home you own, a co-op, a condo, or even an apartment rented by a family member) and you spend more than 183 days in New York during the calendar year, New York will tax you as a full-year resident regardless of where your domicile is.

Critically, any part of a day spent in New York counts as a full day. A quick trip through JFK, a dinner in Manhattan, or a weekend on Long Island all count toward your 183. This catches many people off guard.

To stay below 183 days, you need to:

• Count every day carefully and keep contemporaneous records
• Include partial days, travel days through New York, and overnight stays
• Maintain a calendar or log with supporting documentation such as credit card receipts, EZ-Pass records, and boarding passes

The Five Factors New York Uses to Evaluate Domicile

When auditing a former resident, New York State examiners look at five primary factors to determine where your true domicile is. No single factor is conclusive, but the combination matters enormously.

1. Home: The size, value, and nature of your homes in each state. If your New York home is larger and more valuable than your Florida home, this weighs against a Florida domicile claim.
2. Active business involvement: Where do you conduct business, attend meetings, and make decisions? If your business is on Long Island, New York will view that as evidence of New York domicile.
3. Items near and dear: Where are your most cherished possessions? Family heirlooms, art, jewelry, and collectibles are considered evidence of domicile.
4. Family connections: Where do your spouse, children, and other close family members live?
5. Time: How much time do you actually spend in each location? While not the only factor, significantly more time in New York than Florida is a strong indicator of domicile.

Documentation That Protects You

If New York audits your domicile change, the burden of proof is on you to demonstrate that you have genuinely relocated. The documentation you need to gather and maintain includes:

• Florida Declaration of Domicile filed with the county clerk
• Florida driver’s license and vehicle registration
• Florida voter registration
• Updated will and estate documents reflecting your Florida address
• Notification to banks, brokerage accounts, and the IRS of your new Florida address
• Florida homestead exemption application (if applicable)
• Contemporaneous day count records for the entire tax year
• Evidence of Florida social connections: gym membership, country club, doctor, dentist, house of worship

Filing as a New York Part-Year Resident

In the year you change your domicile, you will file as a New York part-year resident (Form IT-203) for the portion of the year you were a New York domiciliary, and as a Florida resident for the remainder. Florida has no state income tax return, which simplifies the Florida side considerably.

Getting the allocation right between the part-year periods, particularly for income from investments, business interests, and deferred compensation, requires careful analysis and the proper allocation of income and deductions.

When to Call a CPA

The short answer: before you file your first return as a Florida resident. Ideally, before you even formalize the move. A CPA with experience in New York domicile cases can help you structure the transition, build the right documentation from day one, and avoid the mistakes that trigger New York State audits.

At JRH & Associates in Garden City, NY, we have worked with many Long Island clients through this exact process. We understand both the New York audit environment and the practical steps required to establish a defensible Florida domicile.

This article is provided for general informational purposes only and does not constitute tax or legal advice. Tax laws are subject to change. Consult a qualified CPA before making decisions about your domicile or residency status.