This post uses hypothetical scenarios for illustrative purposes only. It does not describe any actual client, transaction, or representation, and is not legal advice.
Imagine a founder about eighteen months out from a sale, at dinner with someone who exited last year, hearing the pitch that launches a thousand U-Hauls: move to Florida first, sign second, and the state tax on the whole deal disappears. The math sounds like a seven-figure decision that costs a change-of-address form. The real version is better described this way — the move can work, it has to be real, it has to be early, and it does not move every dollar. The founders who get full value from relocation are the ones who treat it as a project with a timeline, not a signature.
What Florida offers is simple; leaving is the hard part
Florida’s side of the trade is genuinely clean. There is no state personal income tax — the state constitution forbids one — so a Florida-domiciled individual recognizes the gain on a company sale with no state-level income tax on top of the federal bill. Florida even provides a formal way to plant the flag: under section 222.17, Florida Statutes, a person who has established Florida domicile can file a sworn declaration with the clerk of the circuit court stating that Florida is the permanent home — and the statute has a specific variant for people who still keep a house somewhere else, declaring Florida the predominant and principal residence. The declaration is cheap, recorded, and useful. It is also nowhere near sufficient by itself, and treating it as a talisman is the first mistake in most failed relocations.
The reason is that your old state, not Florida, grades the exam. Domicile is a facts-and-intent test: where your family actually lives, where the houses are and which one behaves like home, where the cars, doctors, advisors, school enrollments, and Tuesday nights are. High-tax states audit the year of a large transaction precisely because the incentive to paper a move is obvious, and they win when the facts lag the filings. Several states add a second, purely mechanical trap on top: statutory residency. New York’s version is the famous one — keep a permanent place of abode there and spend more than 183 days in-state, and New York can tax you as a resident that year regardless of where your domicile technically moved. A founder who “moves” in March, keeps the Westchester house, and commutes back through closing can lose the entire play on day-counting alone.
The move doesn’t relocate income that already has a home
The second overcorrection is assuming a successful move erases the old state entirely. It doesn’t, because states tax nonresidents on income sourced within them, and pieces of a company sale can carry old-state source no matter where the seller lives when the wire lands. Think of the purchase price as arriving in layers. The capital gain on the stock itself is generally intangible income sourced to the seller’s state of residence when the gain is recognized — that is the layer the Florida move is actually for. But compensation layers keep their birthplace. Option exercises and deferred compensation attributable to years worked in the old state are typically allocated back to it under workday sourcing rules. An earnout that is, in substance, disguised compensation for post-closing services performed at the target’s old-state headquarters looks like old-state wages, not Florida gain. Installment payments deserve their own attention: the character and source analysis runs payment by payment, and — as we covered in the section 453A interest-charge discussion — deferred purchase price is already a tax instrument before any state issue arrives. First, inventory the layers. Second, source each layer honestly. Third, price the move on the layers it actually converts.
Sequence the move against the deal calendar, not the closing dinner
Timing is where good relocations are won. The gain layer is sourced at recognition, so the move must be complete — domicile actually shifted, statutory-residency day counts managed — before the recognition event, with enough runway that the facts look like a life and not a maneuver. A move executed the month before signing invites exactly the audit it cannot survive; a move executed a full tax year earlier, with the declaration filed, the homestead established, the licenses, registrations, and physicians switched, and the old house sold or genuinely surrendered, tends to hold. The homestead filing does double duty, because Florida’s homestead regime is also an asset-protection and property-tax story — one we’ve traced for founders in the pre-sale cash-out context. And the state analysis should ride alongside, not replace, the federal one: qualified small business stock treatment under section 1202 doesn’t care about the move at all, which cuts both ways — a founder who relocates and forfeits nothing federally may still be leaving the larger federal exclusion unplanned while optimizing the smaller state number.
Expect the deal documents to notice the move, too. Buyers ask for tax residency representations, withholding forms key off the seller’s status, and a seller who relocated mid-process should make sure the W-9s, the flow-of-funds addresses, and the equityholder records tell one consistent story. Inconsistency in the closing set is discoverable, and residency audits run on exactly that kind of paper.
The statute cuts both ways, and the snowbird version proves the point
A detail most people never hear: section 222.17 also works in reverse. Subsection (4) lets a person who keeps a Florida home but intends to stay domiciled elsewhere file the opposite declaration — a sworn statement that Florida is not home, naming the state that is. It exists because owning a Florida house and spending winters here generates exactly the kind of facts that look like a domicile change, and some people need to disclaim the inference rather than claim it. That the Legislature built a form for both directions tells you what the game actually is: domicile is inferred from conduct, and the declaration — either declaration — is one piece of evidence in a file the old state’s auditor will read skeptically. The founder version of the lesson runs the same way. If the facts say Naples, the paperwork confirms it; if the facts still say Greenwich, no filing in any clerk’s office will outvote them. In the year of the move itself, expect to file a part-year or nonresident return in the old state either way — the question the audit tests isn’t whether you filed something in Florida, it’s the date the old life actually ended.
The takeaway
Moving to Florida before an exit is neither a myth nor a formality. It is a genuine, sometimes very large, state tax play that works when three things are true: the move is real on the facts, the move is complete before the gain is recognized, and everyone involved understands which layers of the price the move converts and which layers stay sourced to the old state. The founders who capture it start the project when the deal is a gleam in the banker’s eye — not when the purchase agreement hits the data room. Coordinate the sequencing with your deal counsel and your CPA together, because the domicile calendar and the transaction calendar only cooperate if someone makes them.
If you are planning a move to Florida ahead of a company sale, feel free to reach out to my firm manager, Magda, at Magda@montague.law, or fill out our contact form. Mention you read this post.
