Estate planning for snowbirds and dual-state residents means coordinating your will, trusts, and beneficiary designations across two states while clearly establishing one state as your legal domicile. For most people who winter in Florida, that domicile should be Florida — the state with no income tax, no estate tax, strong homestead protection, and a robust set of spousal rights. Getting the domicile question wrong can expose your estate to a second state’s death taxes, trigger ancillary probate, and quietly undercut a surviving spouse’s protections.
I have spent years untangling estates for families who split their lives between Florida and somewhere colder — New York, New Jersey, Connecticut, Ohio, the Carolinas. The pattern repeats. People assume that because they spend most of the winter here, Florida law automatically governs everything when they die. It does not. Domicile is a legal conclusion, and two states can each claim you if your paperwork is sloppy. This article walks through what dual-state residents actually need to do, with particular attention to the surviving spouse — because that is where the costliest mistakes hide.
Why domicile is the hinge your whole plan swings on
Residence and domicile are not the same thing. You can have several residences. You have exactly one domicile: the place you intend to return to, your true permanent home. When you die, your domicile determines which state’s law governs the administration of your estate, which state can tax your intangible assets, and — critically — which state’s rules protect your spouse.
Florida is generous to its domiciliaries. There is no state estate tax and no state income tax. The homestead enjoys constitutional protection from most creditors and special descent rules. And the surviving spouse has the elective share under Florida’s probate code. None of that helps you if a northern state successfully argues that you never actually left.
That is the trap. States like New York do not give up a taxpayer easily. If you keep a home up north, vote there, see doctors there, and spend close to half the year there, the old state’s tax authority may assert that you remained domiciled — or at least a “statutory resident” — and tax your estate accordingly. The burden of proving you changed domicile generally falls on you, or on your executor after you are gone and can no longer testify about your intent.
The 183-day rule and statutory residency
Many people fixate on the “183-day rule,” and it matters, but it is widely misunderstood. Spending more than 183 days in Florida supports a Florida domicile claim. The flip side is the real danger: several northern states treat anyone who maintains a permanent home there and spends more than 183 days in the state as a statutory resident, taxable regardless of stated domicile. The day count is aggregate, and in many states even part of a day counts as a full day.
So the goal is twofold. Spend enough time in Florida to look like a Floridian, and spend few enough days up north to avoid statutory residency there. Keep contemporaneous records — calendars, travel receipts, toll records, cell-phone location data. When a residency audit lands on your executor’s desk, that paper trail is the difference between winning and writing a check.
How to actually establish Florida domicile
Intent is the legal test, but intent is proven by conduct. A single document will not do it; a consistent pattern will. Here is the checklist I give dual-state clients who want Florida to control:
- File a Declaration of Domicile under Florida Statute § 222.17. This is a sworn statement, recorded with the clerk of the circuit court in your county, declaring Florida your permanent home and that you have abandoned your prior domicile. It is not magic on its own, but it is strong contemporaneous evidence of intent.
- Apply for Florida homestead exemption on your Florida home — and stop claiming a residency-based property tax break in the other state. You cannot claim primary-residence tax benefits in two states at once.
- Get a Florida driver’s license and surrender the old one; register your vehicles here.
- Register to vote in Florida and actually vote here. Voting records are among the first things auditors pull.
- Move the center of your financial and personal life: change your mailing address, banking, primary physicians, accountant, and dentist; update passports and Social Security records.
- Re-execute your estate planning documents under Florida law with Florida formalities — a new will, revocable trust, durable power of attorney, health care surrogate, and living will.
That last point trips people up. They moved south, did everything else right, and never updated the estate plan. Their will still says “I, a resident of Westchester County, New York.” That single recital hands the old state an argument it should never have had.
Documents that travel and documents that do not
A properly drafted will is generally honored across state lines if it was valid where executed. But “generally honored” is not “trouble-free.” Florida has strict execution requirements and its own rules — for example, Florida will not recognize a nonresident as personal representative unless that person is a close relative or a spouse of a relative. An out-of-state executor your will names may be disqualified here.
Powers of attorney and health care documents are the bigger practical problem. A power of attorney drafted for a northern state may be rejected by a Florida bank or title company that does not recognize its form. Florida’s durable power of attorney statute is exacting. Health care surrogate designations and advance directives should likewise be Florida-compliant so that a hospital in Boca or Fort Lauderdale honors them without hesitation. My standard advice: once Florida is your domicile, rebuild the entire document set under Florida law, and keep parallel health care directives valid in the second state for the months you are up north.
Avoiding ancillary probate on the out-of-state property
If you keep the northern house in your individual name, your Florida estate will face ancillary probate in that state to clear title — a second proceeding, second set of fees, second delay. The clean fix is usually a revocable living trust that holds real estate in both states. Property titled in the trust passes without probate in either jurisdiction, and the trust quietly governs distribution under your chosen state’s law. For dual-state families, the funded revocable trust is the workhorse of the plan.
The surviving spouse: where snowbirds get it wrong
This is the part most snowbird checklists skip, and it is the part that has cost real families real money. Florida protects surviving spouses aggressively, and the rules turn on domicile.
Under Florida’s elective share statute, the surviving spouse of a person who dies domiciled in Florida is entitled to 30 percent of the “elective estate” — see Fla. Stat. §§ 732.201 and 732.2065. The elective estate is broad. It is not just the probate estate. It reaches revocable trust assets, certain jointly held property, accounts with pay-on-death designations, and even some assets transferred within a year of death. The point of that breadth is to stop a spouse from using will substitutes to disinherit a husband or wife.
Now layer in dual-state living. Two ways snowbirds undermine the elective share:
- The domicile is ambiguous. The elective share right attaches when the decedent dies domiciled in Florida. If domicile is genuinely contested between Florida and the other state, the surviving spouse’s 30 percent claim — and the law that governs it — is suddenly up for argument at the worst possible moment.
- Out-of-state planning that ignored the Florida spouse. I have seen northern revocable trusts, drafted years before the move, that quietly route everything to children from a first marriage. The couple then becomes Florida-domiciled. On death, Florida’s elective share reaches into that trust — which the out-of-state drafter never anticipated. The result is litigation the deceased spouse would have hated.
There is also Florida homestead, which is its own creature. A Florida homestead cannot be freely devised away from a surviving spouse if the couple resided there; the spouse takes a life estate or, by election, a one-half tenancy in common with the descendants. A snowbird who tries to leave the Florida condo entirely to the kids may find the law overrides that wish. Add the spouse’s family allowance and exempt property rights, and you see why dual-state plans must be stress-tested against Florida’s spousal protections — not the other state’s.
When you actually want to limit the elective share
Blended families and second marriages are common among snowbirds, and sometimes both spouses genuinely want to provide for each other in a measured way and protect children from prior marriages. Florida allows that, but only the right way: through a valid prenuptial or postnuptial agreement with proper disclosure, or through carefully structured marital trusts that satisfy the spouse’s statutory rights. You cannot do it by quietly moving assets and hoping. The elective estate is designed to defeat exactly that maneuver.
Coordinating with elder law and long-term care planning
Dual-state seniors face a second coordination problem: long-term care. Medicaid is administered state by state, with different eligibility rules, lookback enforcement, and estate-recovery practices. If you may someday need nursing care, the planning you do now should anticipate which state’s program you will rely on. Tools such as a Medicaid asset protection trust must be established well before a crisis, because every state imposes a multi-year lookback on transfers. Where you are domiciled when you apply changes the analysis, so this belongs in the same conversation as your will and your domicile strategy — not as an afterthought.
A practical sequence for dual-state clients
When a snowbird couple comes to my office, we work in this order:
- Decide, deliberately, which state will be domicile — and commit to the conduct that proves it.
- File the Declaration of Domicile and fix the property-tax exemptions so you are not claiming primary residence in two places.
- Rebuild the document set under Florida law: will, funded revocable trust holding real estate in both states, Florida durable power of attorney, health care surrogate, and living will.
- Run the plan against Florida’s spousal protections — elective share, homestead descent, family allowance — and reconcile any out-of-state trust that predates the move.
- Address long-term care and Medicaid strategy before there is a health crisis.
- Keep records of your days, your travel, and your ties, so your executor can defend your domicile if challenged.
None of this is exotic. It is disciplined, and it is the kind of work that pays off precisely when you are no longer around to fix it. If you split your year between Florida and another state, the time to align your plan is now, while both spouses are healthy and the choices are yours to make. To start that conversation, reach out to a Florida estate planning attorney who handles dual-state matters and understands how the elective share interacts with everything else.
This article is general information, not legal advice. Statutes and tax rules change, and the right answer depends on your specific facts. Consult a licensed attorney about your situation.
Frequently Asked Questions
Do I really need a Florida will if I already have a valid will from my home state?
Your out-of-state will is generally honored in Florida if it was valid where signed, but that is not the same as trouble-free. It may still recite the wrong state of residence, name an out-of-state executor who is disqualified under Florida law, or fail to anticipate Florida’s homestead and elective-share rules. Once Florida is your domicile, the cleaner path is to re-execute your will and related documents under Florida law.
How does Florida's elective share affect snowbirds with a spouse?
If you die domiciled in Florida, your surviving spouse is entitled to 30 percent of your elective estate under Fla. Stat. §§ 732.201 and 732.2065. The elective estate is broad and reaches revocable trust assets, certain joint accounts, and pay-on-death designations — not just the probate estate. Dual-state plans drafted in another state often ignore this, so they should be reviewed against Florida’s spousal protections after you establish domicile here.
What is a Declaration of Domicile and do I have to file one?
A Declaration of Domicile is a sworn statement under Fla. Stat. § 222.17, recorded with the clerk of the circuit court, declaring that Florida is your permanent home and that you have abandoned any prior domicile. Filing it is not legally mandatory, but it is strong contemporaneous evidence of intent that helps defend your domicile against a former state’s tax authority.
How do I avoid probate on my out-of-state property?
Property titled in your individual name in another state typically requires a separate ancillary probate there to clear title. The usual fix is a funded revocable living trust that holds real estate in both states, so the property passes without probate in either jurisdiction and is governed by your chosen state’s law.
How many days do I need to spend in Florida to be a resident?
Spending more than 183 days a year in Florida supports a Florida domicile claim, but the bigger risk is the reverse rule in your former state: many states tax you as a statutory resident if you keep a home there and spend more than 183 days in-state. Count days carefully in both states and keep records, because the burden of proving a domicile change usually falls on you or your executor.
For more on our Florida practice, see our overview of estate planning in Boca Raton. Morgan Legal Group's affiliated New York office also handles Medicaid asset protection trusts.