The Tax Move: Why Wealthy Buyers Establish Florida ResidencyEl Movimiento Fiscal: Por Qué los Compradores Ricos Establecen Residencia en Florida

Every year I have the same conversation in the second week of January. A New York family I have been showing pre-construction to since the previous spring schedules a call. The wife says: "We're going to do it." The husband says: "Walk us through the tax timeline." And what follows is the highest-value conversation I have all year — because the tax framework around establishing Florida residency, done well, is worth more to a family with $30M, $50M, $100M of taxable income than the entire residence we are about to sell them.

The bare math: Florida has zero state income tax. New York's top marginal rate runs to 10.9% (plus 3.876% New York City). New Jersey reaches 10.75%. California tops at 13.3% (going to 14.4% under recent legislation). Illinois sits at 4.95%. None of those states has a homestead protection meaningful for a primary residence the way Florida does. And Florida has no state estate tax — while New York's begins biting at $7.16M and New Jersey/Illinois have various inheritance regimes.

For a family with $20M of annual income, the swap from New York to Florida is worth roughly $2.2M per year, every year, for the rest of their working lives. Over a 20-year window, even at flat income, that compounds to over $80M of after-tax wealth differential before investment returns. This is why the Florida relocation has become the most important wealth-planning decision a high-net-worth East Coast or California family makes in 2026.

But the IRS and the New York Department of Taxation and Finance, in particular, do not let you walk easily. New York audits roughly 3,400 high-net-worth Florida relocations every year. The audit recovery rate is approximately 65%. The buyers who establish Florida residency correctly walk away clean. The buyers who do it half-correctly — keeping their New York apartment, their New York doctors, their New York country club — pay back the saved tax plus interest plus penalties, often more painfully than if they had never tried.

This is the framework I make my Compass clients understand before the Florida purchase. It is not the legal advice itself — you need an attorney and a CPA for that — but it is the structural map of what is at stake and what gets audited.

The 183-day rule (and why it’s not the only one)

The most-cited rule, and the simplest, is the 183-day rule. Each state has its own version, but the principle is the same: if you spend more than 183 days of the year in your former state, that state can claim you as a tax resident even if you also have residency in Florida. A New Yorker who keeps an Upper East Side apartment and stays there 184 nights a year is, by New York's definition, still a New York resident — even with a Florida driver's license, voter registration, and a Brickell condo.

The honest answer is that 183 days is the floor, not the standard. Sophisticated tax counsel typically tells high-net-worth clients to aim for 90 days or fewer in their former state during the transition years — building a meaningful buffer against an audit that examines flights, cell phone tower data, credit card receipts, and toll transponder records.

The day-count is determined by where you slept at midnight. Half a day is a full day. Time in transit through your former state (a layover at JFK on the way to Europe) does not count if you can document it. Time at a hospital appointment in your former state does count. Most high-net-worth clients underestimate their day-count by 15–25 days the first year, because they don't track until they are reminded to.

The domicile rules (where the audit actually lives)

The 183-day rule is the headline. The domicile rules are the trap. Domicile is a separate legal concept: it is the place where you have your true, fixed, and permanent home — the place to which, whenever you are absent, you intend to return. A person has only one domicile at a time. Day-count establishes statutory residency; domicile establishes something deeper, and New York and California auditors care about domicile much more than day-count.

The classic New York domicile audit looks at five factors. None alone is dispositive; together they tell a story.

1. Home. Where is the family’s primary residence in size and value? If your Florida residence is a $4M two-bedroom Brickell condo and your New York residence is a $15M Park Avenue duplex, the auditor will conclude New York is your real home regardless of where you sleep. The fix: the Florida residence should be your most significant home, materially, including for the years you are establishing residency.
2. Active business involvement. Where do you actually work? Where are your business partners? Where are your board meetings? Where do you sign contracts? A New York CEO running a Manhattan business who flies to Brickell on weekends has a domicile problem.
3. Time. Where do you actually spend your time — not just days, but holidays, family events, the meaningful moments of your year?
4. Items near and dear. Where are your family photos, your art, your jewelry, your wedding albums, your beloved possessions? The auditor literally looks at this in audits — sending agents to inspect both residences.
5. Family. Where do your spouse and minor children spend their time? If your children attend school in Manhattan and you sleep in Brickell, the auditor will not be impressed.

The audit is not about technicalities. The audit is about whether your life is really in Florida or whether you are pretending. Auditors are very good at reading the difference.

The Florida domicile checklist

For the family that wants to establish Florida domicile correctly, here is the punch list. Every item is meaningful, and the absence of any one item is a thread an auditor can pull.

1. Florida Declaration of Domicile. A one-page document filed with the county clerk that legally states you intend Florida to be your permanent home. Filed early in the relocation year.
2. Florida driver’s license within 30 days of arrival. Surrender the former state’s license. The DMV transaction is documented in both states.
3. Florida vehicle registration for any vehicle you keep in Florida. Insurance updated to Florida policies.
4. Florida voter registration. Then actually vote in Florida elections — primaries and general. The voter rolls are public and routinely pulled by auditors.
5. Update your will and estate documents to reflect Florida law. Establish a Florida revocable trust if appropriate. Florida has no rule against perpetuities, which is meaningful for multi-generational planning.
6. Update all bank accounts, investment accounts, and credit cards to the Florida address as the primary mailing address.
7. Establish Florida professional relationships. A Florida primary care physician, dentist, accountant, attorney. The auditor will check whether you still see your New York or California doctors.
8. Join Florida-based clubs and organizations. Country club, beach club, religious institution, charitable boards. Drop or downgrade your memberships in the former state.
9. Apply for the Florida Homestead Exemption on your Florida primary residence. This is the legal declaration that this is your primary home, and it carries a $50K property tax exemption plus the Save Our Homes 3% cap on annual assessment increases. Filed by March 1 of the year you claim.
10. If you maintain a residence in your former state, downsize meaningfully. The auditor will compare square footage and value. A $4M New York pied-à-terre is fine; a $15M Park Avenue duplex retained as "the small apartment" is not.

What gets you audited (and what gets you through)

New York's audit triggers are well-documented because of how aggressively the state pursues departing high-net-worth residents. The most common triggers:

• Filing a part-year resident return that shows a sudden income drop of more than 30% (the state assumes you didn’t actually leave, just under-reported).
• Maintaining the same primary residence square footage in your former state.
• Claiming Florida residency while your spouse files separately as a New York resident.
• Receiving K-1 income from a New York partnership while claiming non-resident status — New York will argue you are still an active partner.
• Failing to file the Florida Declaration of Domicile, or filing it more than 6 months after the claimed Florida residency date.

The audit process, when triggered, takes 18–36 months and is not pleasant. The state subpoenas calendar entries, cell phone records, credit card statements, toll transponder data, doctor visit records, and witness statements. The depositions go through the five domicile factors in exhaustive detail.

The audits that go well share three characteristics: clean documentation of the day-count from day one, meaningful downsizing of the former-state residence, and authentic Florida-life embedding (real club memberships, real Florida-based doctors, real Florida community involvement).

The estate tax dimension (often the bigger number)

The annual income tax savings are headline-grabbing. The estate tax dimension is often larger over the lifetime arc. Florida has no state estate tax. New York’s estate tax begins at $7.16M and tops out at 16%. New Jersey eliminated its estate tax in 2018 but retains an inheritance tax with specific classes. Illinois has a $4M exemption and 16% top rate. Massachusetts begins at $2M.

For a family expecting to transfer $30M+ at death, establishing Florida domicile years before death — with the same domicile rigor as during life — saves $4M–$8M depending on the former state and the death year. This is the conversation that often locks the Florida purchase decision: not the annual income tax savings, but the recognition that the estate tax math compounds over the lifetime hold.

Where the Florida real estate purchase fits

This is where my role comes in. The Florida residence is one of the most observable, documentable, and audit-relevant pieces of the domicile package. The auditor will inspect it — sometimes literally. The five factors are evaluated against this residence as a whole.

For the relocation buyer, this means the Florida residence purchase decision is not just a lifestyle decision. It is a tax-planning decision. The residence needs to be:

• Meaningfully more substantial than what you retain in the former state. If you keep a $5M New York pied-à-terre, the Florida residence should be $10M+.
• Capable of housing the full family for extended stays — not a 1BR investment unit.
• Located in a neighborhood with the lifestyle infrastructure that supports actual Florida living — club access, medical infrastructure, school proximity if applicable.
• Furnished and used as a real home from day one, not held empty as a future plan.

Brickell, Edgewater, Coconut Grove, Coral Gables, and Bal Harbour are the most common relocation neighborhoods for the NY/NJ/CT buyer. South Beach and Sunny Isles trend slightly older Russian/LATAM/Brazilian. Fisher Island, Star Island, Indian Creek — for the family establishing privacy and gated security at the highest level. Each one has a different domicile profile that fits a different buyer.

When the math doesn’t work

The Florida relocation does not make sense for every family. Three profiles where I steer clients back to careful conversation with their CPA before pulling the trigger:

The under-$5M income family. The state income tax savings on $2M of income from New York is roughly $220K per year. After legal fees, transition costs, dual-state-living complexity for the first two transition years, and the real cost of buying and furnishing a meaningful Florida home, the breakeven is often three to five years. Worth doing, but not the dramatic seven-figure decision the headlines suggest.

The active-business owner with operations in the former state. If your business is in New York and you keep flying back, the IRS and New York will both treat much of your income as New York-sourced regardless of your domicile. The relocation may save partial tax but not the full headline number. Sophisticated business restructuring (relocating headquarters, restructuring ownership) is needed in parallel.

The buyer with strong personal ties in the former state. If your spouse refuses to leave or your children are in the middle of a critical school year, half-domicile is the worst outcome — you pay full tax in your former state and still spend the money on Florida living. Wait for the right transition year. The math does not change; the timing does.

The 2026 landscape

Several state-level dynamics are shaping the 2026 relocation calculus.

New York has stopped its 2022–2023 push to lower the top rate and is, if anything, considering a wealth tax surcharge for 2027. California is in active legislative debate over a wealth tax that would extend to residents who left within the prior decade — what the relocation industry calls the "exit-trailing wealth tax" — though as of mid-2026 nothing has passed. New Jersey has eliminated estate tax but maintains the inheritance tax, and the rate environment is hostile to multi-generational family wealth.

The federal estate tax exemption is scheduled to revert from $13.6M per person back to roughly $7M per person on January 1, 2026 unless Congress acts. Many families used Q4 2025 to crystallize lifetime gifts under the high exemption; the corresponding state-level estate tax landscape is what determines whether the gifting strategy actually preserves the wealth.

Florida, meanwhile, has hardened its homestead protections and continued to expand high-net-worth-friendly trust law (notably the 2023 codification of Community Property Trusts). The state's incentives to attract high-net-worth domicile have only intensified.

What this conversation looks like in practice

For a client seriously considering the relocation, the first 90 minutes of conversation go like this: I introduce a Florida tax attorney and a Florida CPA (separately from the New York team) for a parallel audit-defense review. We map the calendar for the 12-month transition. We identify the right neighborhood for the family's actual life pattern. We schedule the home-hunting trips that establish documentary proof of the search itself. And we structure the home purchase timing to coincide with the most-defensible domicile establishment date.

The Florida residence purchase is one piece of a multi-disciplinary transition. Done right, it is the cornerstone. Done as an afterthought to a half-domicile, it is the evidence the auditor uses against you.

Final word

The Florida relocation is the highest-leverage decision a high-net-worth East Coast or California family makes in 2026. The annual savings dwarf any single investment return decision the family will make that year. But the structural rules matter more than the headline rate, and the families that get this right have done it deliberately, with documentation, and with a Florida residence that is unmistakably the center of the family's life.

If you are evaluating this move — or you are mid-transition and want to make sure the real estate piece supports the rest of the structure — schedule a private consultation. I'll spend the first call mapping your specific timeline, your former-state audit risk profile, and the residence type and neighborhood that best fits the rest of the plan.