Estate Planning for Snowbirds and Dual-State Residents: A Long Island Family’s Guide

Estate planning for snowbirds and dual-state residents is the work of coordinating your will, trusts, powers of attorney, and tax exposure across two states so that one set of documents controls your estate no matter where you happen to be when you pass. For a Long Island family with an aging parent who winters in Florida, the central questions are which state is the legal domicile, whether real property in both states will trigger two separate probate cases, and how New York’s estate tax interacts with Florida’s lack of one. Get those three answers right and most of the rest falls into place.

I write this for the adult child who is quietly carrying the load: the one fielding calls from a parent in Boca in February and managing the Nassau or Suffolk County house the rest of the year. The legal mechanics below are not abstract. They decide whether you spend a long winter shuttling between two courthouses or settle the estate cleanly from one.

What “dual-state resident” really means for estate planning

People use “resident” loosely. The law does not. Two terms drive everything.

• Residence is simply a place you live. You can have several.
• Domicile is your one true legal home — the place you intend to return to. You can have only one domicile at a time, and it controls your state of estate taxation, the validity of your will, and which probate court has primary authority.

A snowbird who spends five months in a Palm Beach condo and seven on Long Island is a dual-state resident. But that person has exactly one domicile, and which state claims it is the single most consequential question in the plan. New York wants to keep your parent domiciled here because New York taxes the estates of its domiciliaries. Florida, with no state estate tax and no state income tax, is the friendlier home for legacy purposes.

How domicile is actually decided

Domicile is a question of intent backed by conduct. No single factor settles it; a court or a taxing authority looks at the whole picture. The New York Department of Taxation and Finance is aggressive about this, and it audits “abandonment of New York domicile” closely. The factors that carry the most weight:

• Where the person spends the most days (the so-called 183-day count matters for statutory residency, but domicile is broader).
• The address on the driver’s license, voter registration, and vehicle registrations.
• Where the homestead exemption is claimed — Florida’s homestead exemption under Article X of the Florida Constitution is a strong signal of Florida domicile.
• The location of the “near and dear” — family heirlooms, pets, safe-deposit boxes, the items a person keeps closest.
• Where the person banks, sees doctors, attends religious services, and lists as home on federal tax returns.
• A signed Declaration of Domicile filed with the Florida county clerk under Florida Statutes section 222.17.

If your parent intends Florida domicile, the plan should make that intent loud and consistent. Conflicting signals — a Florida declaration but a New York voter registration and a New York-addressed will — invite a New York residency audit and can pull the estate back under New York tax.

The double-probate problem (and how to avoid it)

Here is the trap that surprises most families. Probate is generally handled by the state where the decedent was domiciled. But real estate is governed by the law of the state where it sits. So if your parent dies domiciled in Florida while still owning the Long Island house in their sole name, you typically face two proceedings:

1. A primary (domiciliary) probate in Florida, and
2. An ancillary probate in New York Surrogate’s Court for the New York real property.

Ancillary probate means a second court, a second filing fee, a second round of attorney involvement, and months of additional delay — all to transfer one house. Run the reverse and the same thing happens: a New York-domiciled parent who owns a Florida condo outright will need ancillary administration in Florida. Florida ancillary procedure is set out in Florida Statutes section 734.102.

The cleanest fix is to take the out-of-state real estate out of the probate estate entirely. The usual tools:

• A revocable living trust. Deed both homes into one trust and neither passes through probate in either state. The trust travels with your parent; it does not care which state they are sitting in. This is the workhorse of dual-state planning, and it is where a properly drafted revocable trust from an experienced New York trusts attorney earns its keep.
• Joint ownership with rights of survivorship, where appropriate — though this can create gift-tax and creditor exposure and is not right for every family.
• A Florida Lady Bird deed (enhanced life estate deed), which lets your parent keep full control of the Florida home during life and pass it automatically at death without probate, while preserving the homestead exemption and the stepped-up basis.

New York does not recognize transfer-on-death deeds for real property, so the Lady Bird option is Florida-only. That asymmetry is exactly why one-size documents fail snowbirds.

Will validity and the “one will, properly executed” rule

A frequent worry: “Mom signed her will in New York — is it good in Florida?” Generally yes. Both states honor a will that was validly executed under the law of the place where it was signed. Florida, under section 732.502 of the Florida Statutes, recognizes wills executed in compliance with the law of the state where they were made.

But two cautions matter. First, Florida does not recognize holographic (handwritten, unwitnessed) wills or oral wills, even if valid elsewhere. Second, Florida imposes a specific rule on who may serve as personal representative: a nonresident can serve only if they are a close relative of the decedent (Florida Statutes section 733.304). If your plan names an out-of-state friend or a non-relative as executor of a Florida estate, that nomination can fail.

My standard guidance is to maintain one coordinated estate plan — a single pour-over will, one revocable trust, and matched ancillary documents — drafted by counsel who understands both jurisdictions, rather than two competing wills from two different lawyers. Competing wills are how families end up litigating which document controls.

The tax picture: where the real money is

New York estate tax and the “cliff”

New York imposes its own estate tax on the estates of New York domiciliaries and on New York-situated real property of nonresidents. The state has a generous exemption that is indexed annually, but it carries a notorious feature: the estate tax cliff. If the taxable estate exceeds the exemption amount by more than 5%, the exemption phases out entirely and the whole estate is taxed, not just the excess. Crossing that threshold by a small margin can cost hundreds of thousands of dollars. Because the exemption figure adjusts each year, the precise number should be confirmed with current counsel rather than assumed.

Florida, by contrast, repealed its estate and inheritance taxes years ago and the Florida Constitution prohibits them. A parent who successfully establishes Florida domicile generally escapes state-level estate tax — a powerful reason snowbirds work to make the Florida home the legal domicile.

What Florida domicile does and does not protect

Becoming a Florida domiciliary removes New York’s estate tax on the general estate, but it does not remove New York’s reach over New York real estate. New York continues to tax the value of in-state real property owned by a nonresident decedent. Translation: even after a clean move to Florida, the Long Island house can still draw New York estate tax unless it is held in a structure (such as a trust or an LLC, with proper planning) that changes its character. This is technical ground where guidance from an attorney focused on New York elder law and asset protection is worth far more than it costs.

The federal estate tax is the same in both states; only the federal exemption applies, and married couples can use portability and credit-shelter planning regardless of which state they call home.

Documents that must travel: powers of attorney and health directives

The aging-parent piece of this is not really about death — it is about the years before. If your father has a stroke in February in Florida and his only power of attorney was signed on a New York form, the Florida hospital and Florida bank may balk. States honor out-of-state directives in theory, but in practice institutions resist unfamiliar forms.

For a true dual-state parent I recommend signing the core lifetime documents on both states’ forms:

• A durable power of attorney for finances valid in each state (New York’s statutory short form is unusually rigid and rejected if not exact).
• A health care proxy / designation of health care surrogate in each state.
• A living will / advance directive recognized locally.
• A HIPAA authorization so you, the adult child, can actually get information from doctors in both states.

This redundancy costs little and prevents the worst phone call — the one where a Florida hospital tells you they cannot speak to you about your own parent. Florida estate planning counsel can pair the New York set with a matching Florida package; see the firm’s Florida estate planning practice for the local side of the work.

A practical sequence for Long Island snowbird families

1. Decide domicile on purpose. Pick the state, then align every document, registration, and filing to it. Indecision is the enemy.
2. Inventory real property in both states. Each house owned in sole name is a future ancillary probate unless retitled.
3. Fund a revocable trust. Move the homes (and major accounts) into it so the estate skips probate in both states.
4. Sign dual-state lifetime documents. Powers of attorney, health proxies, and HIPAA releases for each state.
5. Run the New York tax math. Especially the cliff, and especially if the Long Island house stays in the family.
6. Review every two to three years and after any move, sale, or major health change.

You can read more about the foundational documents on our wills page, and about settling a New York estate on our Florida and New York probate overview. When you are ready to map your parent’s specific situation, our team is one call away through our contact page.

The bottom line

Snowbird estate planning is not twice the work of ordinary planning — it is the same plan done with discipline across a border. The families who struggle are the ones who let two states, two sets of forms, and two lawyers drift out of sync. The families who settle estates smoothly are the ones who chose a domicile, built a single coordinated plan around it, and kept the out-of-state real estate out of probate. For an adult child managing an aging parent’s two lives, that coordination is the difference between a clean transition and a two-courthouse winter.

Frequently Asked Questions

Do snowbirds need a separate will for each state?

Usually no. A will validly executed in one state is generally honored in the other, and Florida (under section 732.502, Fla. Stat.) recognizes wills made under another state’s law. The risk is having two competing wills from two lawyers. Far better is one coordinated plan — a single will and revocable trust drafted by counsel who understands both New York and Florida — plus dual-state lifetime documents like powers of attorney and health directives.

If my parent moves to Florida, can New York still tax the Long Island house?

Yes. Establishing Florida domicile removes New York’s estate tax on the general estate, but New York continues to tax New York-situated real property even when owned by a nonresident decedent. The Long Island house can still draw New York estate tax unless it is held in a structure such as a properly planned trust or LLC. This is a technical area where experienced New York counsel matters.

What is ancillary probate and how do we avoid it?

Ancillary probate is a second probate case opened in the state where the decedent owned real estate but was not domiciled. A Florida-domiciled parent who owns a Long Island house in sole name typically needs Florida domiciliary probate plus New York ancillary probate. You avoid it by taking the out-of-state real estate out of the probate estate — most often by deeding it into a revocable living trust, or in Florida by using a Lady Bird (enhanced life estate) deed.

How does Florida decide whether my parent is really a Florida resident for tax purposes?

Domicile turns on intent shown through conduct: days spent, driver’s license, voter registration, where the homestead exemption is claimed, location of valued possessions, and where the person banks and sees doctors. Filing a Declaration of Domicile under section 222.17, Fla. Stat., and claiming Florida’s homestead exemption are strong signals. New York audits abandonment of domicile aggressively, so the signals must be consistent.

Why does my New York power of attorney sometimes fail at a Florida bank?

States honor out-of-state directives in principle, but banks and hospitals often resist unfamiliar forms in practice, and New York’s statutory power-of-attorney form is unusually rigid. For a true dual-state parent, we recommend signing finance powers of attorney, health care proxies/surrogate designations, and HIPAA authorizations on both states’ forms so an adult child can act without delay in either location.