Massachusetts to Florida: The Estate Tax Question Nobody Asks Until It Is Too Late

People who leave Massachusetts for Florida almost always start with the income tax, and the income tax case is real. Massachusetts taxes wages, interest, dividends and long-term capital gains at a flat 5 percent, short-term gains at 8.5 percent, and adds the 4 percent Fair Share surtax on income above a threshold of roughly $1.08 million that is indexed each year. Florida taxes none of it.

But for a retired couple with a paid-off house in Wellesley, a brokerage account and two IRAs, the income tax saving is a few percent of a modest annual income. The estate tax is a single number, assessed once, on everything, and it is frequently larger than a decade of income tax savings combined. Run the Massachusetts computation on a $10 million estate made up of the usual things, a house, investment accounts and retirement accounts, and the Massachusetts estate tax comes to roughly $968,000. Domiciled in Florida with no Massachusetts real estate, the same estate owes Massachusetts nothing, and Florida has no estate tax to replace it.

That is the question this corridor turns on, and it is the one almost nobody asks while they are still alive to answer it. The Massachusetts estate tax is not decided on a return you file. It is decided after you die, on a sworn affidavit your family fills out about the last five years of your life, and the burden of proving you had actually left is on your estate. This post walks through how the tax works, what changed in August 2025 for the Massachusetts house you keep, and what the record has to look like for the move to hold. If you want the income tax corridor analysis first, it lives on the moving from Massachusetts to Florida page.

The Massachusetts estate tax is an odd piece of machinery, and understanding it explains why the numbers come out the way they do. Under M.G.L. c. 65C, section 2A(a), the tax on a resident’s estate "shall be equal to the credit for state death taxes that would have been allowable to a decedent’s estate as computed under section 2011 of the Code, as in effect on December 31, 2000." In other words, Massachusetts froze a federal credit table that Congress phased out a generation ago, and uses it as its own rate schedule.

That table, which the Department of Revenue publishes as Table B in its Estate Tax Guide, starts from the taxable estate less $60,000 and climbs through brackets from 0.8 percent to 16 percent, with the top rate reached above $10,040,000 of adjusted taxable estate. The Department is explicit that "Changes to the federal estate tax law after December 31, 2000, have no impact on the Massachusetts estate tax." The federal exemption can rise to whatever Congress sets. The Massachusetts schedule does not move.

Chapter 50 of the Acts of 2023 added two things on top. Section 2A(f) provides that "a credit shall be allowed against the tax imposed by subsections (a) and (b) equal to the amount of such tax; provided, however, that the credit shall not exceed $99,600." And section 2A(g) provides that estates "shall not be required to pay any tax under subsections (a) and (b) if the value of the federal taxable estate is not more than $2,000,000." The $99,600 figure is not arbitrary: it is exactly what Table B produces on a $2,000,000 taxable estate, so the credit wipes out the tax on the first $2 million and nothing more. Above that, the full Table B rate applies to every additional dollar.

The filing threshold is separate from the tax. A return, Form M-706, is required when the gross estate plus adjusted taxable gifts exceeds $2,000,000, for decedents dying on or after January 1, 2023. It is due nine months after death, with an automatic six-month extension to file only if at least 80 percent of the tax is paid by the original due date.

Here is what the table produces, using the taxable estate before any deductions. At $2 million, zero. At $2.5 million, about $39,200. At $3 million, about $82,400. At $4 million, about $180,800. At $5 million, about $292,000. At $10 million, about $968,000. At $15 million, about $1,767,200. At $20 million, about $2,567,200. The effective rate climbs from under 2 percent to nearly 13 percent across that range, and our Massachusetts residency intelligence guide notes one more feature that bites married couples: there is no portability between spouses, so a first spouse’s unused $2 million does not carry over to the survivor the way the federal exemption can.

The statute splits the world into two taxes. Section 2A(a) taxes the estate of a person who "at the time of death, was a resident of the commonwealth." Section 2A(b) taxes "real property situated in this commonwealth" and "tangible personal property having an actual situs in this commonwealth" of every person who at death "was not a resident." That is the whole corridor in two subsections.

If you die domiciled in Massachusetts, the tax reaches everything except real and tangible property located outside the state. The brokerage account, the bank accounts, the IRAs, the life insurance, the business interests: all of it goes into the computation. The Department’s own definition of intangible property lists stocks, bank accounts, insurance and pensions, and for a resident none of it is exempt because of where the custodian happens to be.

If you die domiciled in Florida, the resident tax disappears, and only the Massachusetts real estate and tangible personal property that is physically in Massachusetts stays in reach. The investment accounts, the retirement accounts and the insurance fall entirely outside the Massachusetts estate tax. For the typical household on this corridor, whose wealth is mostly intangible, that is the difference between a six or seven figure bill and nothing at all.

And Florida has no estate tax to take its place, for a structural reason rather than a political one. Article VII, section 5(a) of the Florida Constitution provides that "No tax upon estates or inheritances or upon the income of natural persons who are residents or citizens of the state shall be levied by the state, or under its authority, in excess of the aggregate of amounts which may be allowed to be credited upon or deducted from any similar tax levied by the United States or any state." With the federal state death tax credit gone, that ceiling is zero. Reversing it takes a constitutional amendment, not a budget vote, which Boston estate planners Cushing and Dolan cite as the reason they steer clients to Florida rather than to New Hampshire, where the absence of an estate tax is a statute a future legislature could change. The New Hampshire version of this corridor, with its own tradeoffs, is on the moving from Massachusetts to New Hampshire page.

Most people on this corridor do not sell everything. They keep the Cape house, the place in the Berkshires, or the family home on the North Shore for summers. Section 2A(b) is aimed precisely at that house, and in 2025 the Legislature changed how it is taxed in a way that many published explanations have not caught up with.

For decedents who died from January 1, 2023 through July 31, 2025, the nonresident tax was a proportion. The pre-2025 text of section 2A(b) set it as "a sum equal to the proportion of the credit which the value of Massachusetts real and tangible personal property taxed in this Commonwealth which qualifies for such credit bears to the value of the decedent’s total federal gross estate." Massachusetts computed the tax on your entire worldwide estate, took the Massachusetts fraction, then subtracted the $99,600 credit.

McLane Middleton walked through that method in an October 2025 column: an unmarried Florida resident with a $2 million Cape Cod house and $8 million of other assets. Table B on $10 million is about $1,067,600. Twenty percent of that is $213,520. Less the $99,600 credit, the estate owed $113,920 to Massachusetts on a house worth $2 million.

Chapter 9 of the Acts of 2025, section 35, rewrote section 2A(b) for decedents dying on or after August 1, 2025. The tax is now "the amount of the credit calculated based upon a federal gross estate that is equal to the sum of: (i) the value of the estate’s real or tangible personal property located in the commonwealth," with deductions allowed only if attributable to that Massachusetts property. The Department’s computation for a nonresident now reads: federal gross estate, "Minus value of all property other than MA real and tangible property," then Table B on what is left, then subtract the $99,600 credit.

Run the same Florida resident under the current statute. Table B on $2 million of Massachusetts property is $99,600. The credit is $99,600. The Massachusetts estate tax is zero. Under the old method it was $113,920. The worldwide estate no longer pushes the Cape house up the brackets.

That does not make the house free. A $3 million Massachusetts property owned by a Florida domiciliary now produces about $82,400 of Massachusetts estate tax on its own, and a $5 million one about $292,000. And the filing obligation still runs off the whole estate. The Department states that "The filing requirement for a nonresident decedent who owned or transferred real estate or tangible personal property located in Massachusetts is the same as for a resident and is based on their total worldwide estate plus adjusted taxable gifts." A Florida resident with a $1.5 million Cape house and $6 million elsewhere owes nothing under the current computation, and still must file Form M-706.

The reason that filing matters is the lien. "At the time of death, a lien automatically arises by operation of law on all real estate owned by a decedent, either alone or jointly held," and failing to file Form M-706 and Form M-NRA "will prevent the issuance of a Certificate Releasing Massachusetts Estate Lien." Without the certificate, the heirs cannot deliver clean title to the house. The filing that proves your estate owes nothing on the Cape house is the same filing that invites Massachusetts to ask whether you were really a Florida domiciliary at all.

Every nonresident estate that files because of Massachusetts real or tangible property files Form M-NRA, the Massachusetts Nonresident Decedent Affidavit, alongside Form M-706. It is worth reading before you move rather than leaving it for your children, because it is the actual audit, and the person answering it will not be you.

The form states who signs: "It must be completed and sworn to by the surviving spouse or member of the immediate family of the nonresident decedent having personal knowledge of the facts." It is signed under penalty of perjury, and it says "Every question must be answered."

Then come the questions, and nearly all of them reach back five years. Where the decedent lived outside Massachusetts during the five years preceding death, and whether each place was owned, rented, a hotel or a relative’s home. Where the decedent lived in Massachusetts during the same five years, and for how long. Where the decedent voted or registered to vote. Which states the decedent paid income, real estate or intangibles tax to. The last taxable year a Massachusetts income tax return was filed. Which IRS office processed the federal returns, and what residence those returns stated. Whether the decedent applied for a passport, and what home address the application gave. Whether any will, codicil, trust, deed, mortgage or lease described the decedent as a Massachusetts resident. Church, lodge and club memberships in Massachusetts. Massachusetts bank accounts and safe deposit boxes, and who else could access them. A Massachusetts driver’s license, a Massachusetts vehicle registration, Massachusetts doctors and hospitals. Whether Massachusetts was listed as home on any government or employment form. Whether domicile was ever questioned by any jurisdiction for any purpose.

Read that list as your children will have to answer it. A revocable trust signed in 2022 that describes you as "of Newton, Massachusetts." A passport renewal with the Wellesley address because that is where the old passport was mailed. A cardiologist in Boston you never replaced. A safe deposit box at the branch you have used for thirty years. None of those facts makes you a Massachusetts domiciliary on its own. All of them are facts your family will be swearing to, after you are no longer available to explain them.

The Massachusetts dossier behind our state guide lists what the Department relies on in these reviews: five-year address history, day-by-day presence reconstruction, real estate and lease records, voter registration history, property tax assessments in Massachusetts versus elsewhere, bank and safe deposit box locations, vehicle registration history, passport address, the IRS service center, where dependents went to school, and church, civic and club membership records. It maps almost line for line onto Form M-NRA.

The burden is on whoever claims the change. The Appellate Tax Board states the rule plainly, quoting a line of Supreme Judicial Court authority: "the burden of showing a change of domicil[e] is upon the party asserting the change." In an estate case, that party is the estate.

The test itself is the common law one. A change of domicile requires "the establishment of physical residence in a different state and the intent to remain at the new residence permanently or indefinitely," and the Board looks past what the taxpayer says about intent: the determination "goes beyond merely accepting the taxpayer’s expression of intent and instead requires an analysis of the facts closely connected to the taxpayer’s major life interests, including family relations, business connections, and social activities."

The most useful recent illustration of how this plays out for a Massachusetts to Florida move is Charles Devens, Jr. v. Commissioner of Revenue, Appellate Tax Board Docket No. C304976, decided October 9, 2012. It is an income tax case rather than an estate case, but the domicile analysis is the same one, and it cut both ways in a single decision.

Devens was born and raised in Boston, retired as a bank vice president in 2005, and left for Florida in October of that year. He and his fiancée had bought a home in a gated golf community in Boynton Beach in May 2004 for $265,000 and spent about $117,000 gutting and renovating it. He registered to vote in Florida, removed himself from the Essex voter rolls, registered and insured his car in Florida, obtained a Florida driver’s license, and applied for and received a Florida homestead exemption. He joined a tennis club and local associations. Friends testified to his long-held plan to retire south.

Against that, he kept a lot. The Essex house stayed in his use under a qualified personal residence trust. He returned to it for several months each year. His two sons, a sister and a new grandchild were in Massachusetts. He co-owned a boat registered in Massachusetts and held passive business interests there.

The Board found that he changed his domicile to Florida in October 2005, and granted an abatement of $344,115 for 2006. Its reasoning is the most encouraging sentence in Massachusetts domicile law: a change "does not require that a taxpayer divest himself of all remaining links to the former place of abode, or stay away from that place entirely." The Board cited Salah v. Commissioner of Revenue for the same point, where taxpayers who returned to Massachusetts every summer had still moved their domicile to Florida because "the center of the taxpayers’ domestic, social and civic lives had shifted to Florida." What carried Devens was not the absence of Massachusetts ties but the weight of the Florida ones: a home he had renovated for retirement, a community he actually joined, and a partner whose life moved with his.

Devens also lost, and the way he lost is the part most people on this corridor need to hear. For 2005, the Board held him to a full year of Massachusetts residency and sustained a $185,702 assessment, even though it agreed his domicile moved to Florida that October.

The reason was the statutory residency test in M.G.L. c. 62, section 1(f), which makes a resident of anyone who "maintains a permanent place of abode in the commonwealth and spends in the aggregate more than one hundred eighty-three days of the taxable year in the commonwealth, including days spent partially in and partially out of the commonwealth." His own calendars put him in Massachusetts for more than 183 days in 2005, and the Essex house, which he had the exclusive right to use and paid to maintain under the trust, was a permanent place of abode. He argued the Form 1 instructions let him file as a part-year resident. The Board called that a selective reading and held that the statute "unequivocally resolves the issue."

Two lessons follow. First, a house moved into a trust but still maintained and used by you is still your abode for this test. Second, the move year needs a day count that holds up on its own. Any part of a day in Massachusetts counts, and a retiree who leaves in October has usually already spent more than 183 days in the state before the moving truck arrives. Use our day count checker to see where a planned move date leaves you, and plan the departure so the abode and the day count do not both land in the same year.

For the estate tax, the move year matters for a different reason. The domicile question on Form M-NRA is about the date of death, but the evidence is the five years before it. A clean first year in Florida, with the Florida documents dated early and the Massachusetts ties closed promptly, becomes the foundation every later year builds on. A muddy first year becomes the thing your executor has to explain.

Because the nonresident tax attaches to real and tangible property physically located in Massachusetts, practitioners describe two ways to change what the estate actually holds at death. McLane Middleton names both: "transferring the property into an LLC or gifting the property to an irrevocable trust." The Law Offices of Boyd and Boyd put the LLC rationale in one line, that "LLC shares are considered intangible property and are not subject to estate taxes" for a nonresident.

Treat both as planning conversations, not as forms to download. An entity holding a family vacation house raises questions about purpose, formalities and how the property is actually used, and a gift to an irrevocable trust is a real gift with federal gift tax reporting and a real loss of control. Under the post-August 2025 computation, a Florida domiciliary whose Massachusetts property is worth $2 million or less already owes nothing, which changes the cost benefit of restructuring for many households. Above that, the numbers can justify the work. Either way, this is a conversation for a Massachusetts trusts and estates attorney, and it should happen with the domicile record in view, because no ownership structure helps an estate whose Florida domicile does not hold.

The advantage of Florida on this corridor is partly the tax law and partly the paperwork. Florida gives a new resident an unusually complete set of dated, government-held records almost as a byproduct of arriving, and every one of them is an answer to a Form M-NRA question.

Our Florida residency intelligence guide covers them in detail: a sworn declaration of domicile recorded with the county clerk under Fla. Stat. section 222.17; a homestead exemption that requires you to own and occupy the property as of January 1 and file by March 1, as a sworn statement to the property appraiser; a Florida driver’s license within 30 days of establishing residency; vehicle registration within 10 days; and voter registration. Devens had most of these, and the Board cited them.

None of those filings is dispositive. The Board’s point in Devens was that the center of his domestic, social and civic life had moved, and the documents corroborated it. A declaration of domicile filed by someone who still sees every doctor in Boston and spends seven months on the Cape corroborates nothing. The same principle governs the other large Florida corridor, and the New York version, with its own audit machinery, is on the moving from New York to Florida page.

Read Form M-NRA now and answer it for yourself, honestly, as of today. Every answer that points to Massachusetts is a loose end you can still close. After your death, it becomes a fact your family has to swear to.

Update the documents that name your residence. Wills, revocable trusts, powers of attorney, deeds, mortgages and leases signed after the move should describe you as a Florida resident. Documents signed before the move that still describe you as "of" a Massachusetts town are worth restating. Question 16 on Form M-NRA asks about exactly these.

Move the administrative life, not just the address. Florida license, registration and voter registration first, then the physicians, the dentist, the safe deposit box, the primary bank relationship, the passport address and the address on your federal return. Massachusetts asks which IRS office processed your returns and what residence they stated, so the federal return is part of the record.

Decide deliberately about the Massachusetts house. Selling it ends both the statutory residency exposure and the section 2A(b) estate tax exposure. Keeping it means living inside the 183-day test every year and leaving a Massachusetts filing, a lien and a Form M-NRA to your executor. Both are legitimate choices. Only one of them is a default.

Keep a presence record from the first day. The domicile question is about where your life was centered, and the five-year lookback on Form M-NRA asks for the lengths of your periods in and out of Massachusetts. A contemporaneous day and night record answers that question in a way reconstructed credit card statements cannot.

Tell your executor where the record is. The person answering Form M-NRA needs your records, not their memory of your habits.

The Mobility Map records days and nights by state as they happen, which is what both halves of this corridor need: Massachusetts presence against the more-than-183-day statutory residency test in M.G.L. c. 62, section 1(f), counted the way Massachusetts counts it, with partial days included, and the five-year pattern of time in and out of Massachusetts that Form M-NRA asks your family to describe.

Evidence Vault holds what Form M-NRA asks about, in one place your executor can reach: the recorded Florida declaration of domicile, the Florida homestead exemption, the Florida driver’s license, vehicle registration and voter registration, the sale or lease records for the Massachusetts house, the restated will and trust documents describing you as a Florida resident, the closed Massachusetts bank and safe deposit box records, the new Florida physician records, and your Massachusetts Form 1-NR/PY for the move year.

AuditIQ surfaces the contradictions this corridor produces most often: a Massachusetts house still available while Massachusetts days approach 183, a Massachusetts driver’s license or registration still current, Massachusetts listed as home on a recent document, a Massachusetts mailing address still receiving financial statements, and Florida filings dated well after the claimed move.

ResidencyIQ organizes records and highlights potential exposure factors. It is not a law firm or an accounting firm and does not provide legal or tax advice; work with a qualified CPA, tax attorney or estate planning attorney on your own domicile, estate plan and state exposure.

The resident and nonresident estate tax provisions quoted throughout, including the pre-August 2025 proportional nonresident computation, the current text of section 2A(b) as amended by Chapter 9 of the Acts of 2025, section 35, effective August 1, 2025, the $99,600 credit in section 2A(f), and the $2,000,000 no-tax rule in section 2A(g) added by Chapter 50 of the Acts of 2023, section 48, are in M.G.L. c. 65C, section 2A: https://malegislature.gov/Laws/GeneralLaws/PartI/TitleIX/Chapter65C/Section2A.

The Department of Revenue’s Estate Tax Guide (updated April 23, 2026) is the source of the $2,000,000 filing threshold for decedents dying on or after January 1, 2023, the statement that changes to federal estate tax law after December 31, 2000 have no impact on the Massachusetts tax, the definition of intangible property, the nonresident filing requirement based on the total worldwide estate, the Form M-NRA requirement, the nine-month due date and 80 percent automatic extension rule, the automatic lien on real estate and the Certificate Releasing Massachusetts Estate Lien, the step-by-step resident and nonresident computations for decedents dying on or after August 1, 2025, and Table B, from which every estate tax figure in this article is computed on the taxable estate before deductions: https://www.mass.gov/info-details/estate-tax-guide.

Form M-NRA, Massachusetts Nonresident Decedent Affidavit (Rev. 5/25), including the requirement that it be sworn by a surviving spouse or immediate family member with personal knowledge, the instruction that every question must be answered, and the five-year questions on residences, voting, taxes paid, IRS filing office, passport, documents describing the decedent as a Massachusetts resident, memberships, bank accounts and safe deposit boxes, driver’s license, vehicle registration and medical treatment, is at https://www.mass.gov/info-details/dor-estate-tax-forms-and-instructions.

The worked example of an unmarried Florida resident with a $2 million Cape Cod house and $8 million of other assets owing $113,920 under the proportional method, and the LLC and irrevocable trust planning options, are from McLane Middleton, "Know the Law: Is Massachusetts Real Estate Subject to Massachusetts Estate Tax for Non-Residents," October 4, 2025: https://www.mclane.com/insights/know-the-law-is-massachusetts-real-estate-subject-to-massachusetts-estate-tax-for-non-residents/. The statement that LLC shares are considered intangible property for a nonresident is from the Law Offices of Boyd and Boyd: https://www.boydandboydpc.com/avoid-ma-estate-planning-taxes-for-non-residents/.

Article VII, section 5(a) of the Florida Constitution, limiting any state tax upon estates or inheritances to amounts creditable against a similar federal or state tax, is at https://www.flsenate.gov/Laws/Constitution. The reasoning that Florida is preferable to New Hampshire because a Florida estate tax would require a constitutional amendment, and the practitioner reproduction of the Massachusetts nonresident decedent questionnaire, are from Cushing and Dolan, P.C.: https://www.cushingdolan.com/articles-by-our-attorneys/domicile-avoiding-the-massachusetts-estate-tax-and-moving-to-florida/.

Charles Devens, Jr. v. Commissioner of Revenue, Massachusetts Appellate Tax Board, Docket No. C304976, Findings of Fact and Report, October 9, 2012, is the source of the Boynton Beach purchase and renovation, the Florida voter, vehicle, license and homestead filings, the qualified personal residence trust on the Essex house, the burden of proof and change of domicile standards, the quotations on divesting remaining links and on Salah v. Commissioner of Revenue, the $344,115 abatement for 2006, and the $185,702 assessment sustained for 2005 under M.G.L. c. 62, section 1(f): https://www.mass.gov/doc/charles-devens-jr-v-commissioner-of-revenue-october-9-2012/download.

The Massachusetts income tax rates, the Fair Share surtax threshold of roughly $1.08 million, the absence of estate tax portability between spouses, the statutory residency test and partial-day counting rule, the Department’s domicile factor list and enforcement methods, and the Form 1-NR/PY part-year filing path are from our Massachusetts residency guide, which cites the Department of Revenue’s "Legal and Residency Status in Massachusetts" (https://www.mass.gov/info-details/legal-and-residency-status-in-massachusetts), Fletcher Tilton (https://www.fletchertilton.com/leaving-massachusetts-for-tax-purposes-requires-attention-to-detail/) and Taxstra (https://taxstra.com/massachusetts-capital-gains-tax/). The Florida declaration of domicile under Fla. Stat. section 222.17, the homestead exemption ownership, occupancy and filing dates, and the license and vehicle registration deadlines are from our Florida residency guide, which cites the Florida Department of Revenue homestead publication (https://floridarevenue.com/property/documents/pt113.pdf) and the Florida Department of Highway Safety and Motor Vehicles (https://www.flhsmv.gov/new-resident/).