Estate and Inheritance Tax in Massachusetts 2026
Estate and Inheritance Tax in Massachusetts 2026
Massachusetts is one of a small number of states that still imposes its own estate tax, separate from the federal one. The state threshold is $2 million. The federal threshold in 2026 is $15 million. That gap is real and affects a lot of Massachusetts families who would never come close to the federal tax but can still owe the state tax.
If you own a home in Greater Boston, have retirement accounts, and accumulated savings over a lifetime, you may be over $2 million without realizing it. This guide explains exactly how the Massachusetts estate tax works, who owes it, how it is calculated, and what your family can do about it.
Massachusetts Estate Tax: Who Owes It
Under M.G.L. c. 65C, § 2A, Massachusetts requires an estate tax return if the gross estate plus adjusted taxable gifts exceeds $2,000,000. This applies to deaths on or after January 1, 2023.
"Gross estate" means everything: your home at fair market value, bank accounts, retirement accounts, investment accounts, life insurance proceeds payable to the estate, business interests, vehicles, and personal property. If you have a $900,000 house, $800,000 in a 401(k), $150,000 in savings, and $200,000 in taxable investments, your gross estate is $2,050,000. That puts you above the threshold.
Massachusetts is a common law state, not a community property state. Property you own jointly with a spouse does not get the same automatic full step-up in basis that community property states provide. This matters for income tax planning after death, covered below.
Non-residents who own real estate or tangible personal property in Massachusetts also owe the tax on their Massachusetts property. They file Form M-NRA instead of Form M-706.
How the Massachusetts Estate Tax Is Calculated
This is where Massachusetts diverges from how most people assume estate taxes work.
In many states and at the federal level, the exemption works like a standard deduction: only the amount above the threshold gets taxed. Massachusetts does not work that way. The tax applies to the entire estate value, not just the portion above $2 million. What prevents estates right at or below $2 million from owing tax is a $99,600 credit.
Here is what that means in practice:
An estate worth exactly $2,000,000 calculates its tax under the graduated rate schedule, arrives at a figure of $99,600, and then applies the $99,600 credit. Tax owed: $0.
An estate worth $2,100,000 calculates its tax on the full $2,100,000. The graduated rates produce a tax of roughly $103,200. After subtracting the $99,600 credit, the estate owes approximately $3,600.
An estate worth $3,000,000 calculates its tax on the full $3,000,000. After the credit, it owes roughly $82,000.
The tax rates are graduated and run approximately 0.8% at the low end to 16% at the high end depending on total estate value. The $99,600 credit does soften what used to be a hard "cliff" at $2 million. Estates between $2 million and roughly $3 million face a rate structure where even a modest amount above the threshold generates a meaningful tax bill.
Massachusetts Has No Inheritance Tax
These two terms are often confused. They describe different taxes on different people.
An estate tax is paid by the estate before assets are distributed. The estate itself owes the tax. The executor files the return and pays the bill from estate funds.
An inheritance tax is paid by the person who receives an inheritance. Different states impose it at different rates depending on the beneficiary's relationship to the deceased.
Massachusetts imposes an estate tax. Massachusetts does not impose an inheritance tax. If you inherit money, property, or accounts from a Massachusetts resident, you do not owe Massachusetts tax simply because you received an inheritance.
Only five states currently have an inheritance tax: Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania. Massachusetts is not on that list and has never been.
Beneficiaries in Massachusetts will need to think about federal income tax on inherited assets in some situations (such as distributions from an inherited IRA), but that is income tax, not inheritance tax. The distinction matters.
Federal Estate Tax in 2026
The federal estate tax threshold in 2026 is $15,000,000 per person. This was set by the One Big Beautiful Bill (P.L. 119-21), signed July 4, 2025, which amended IRC § 2010(c)(3). The threshold was $13,990,000 in 2025.
Very few estates owe federal estate tax. Approximately 0.1% of deaths trigger a federal estate tax filing obligation. For most Massachusetts families, federal estate tax is not a concern even if the Massachusetts estate tax is.
The federal estate tax rate is 40% on amounts above the exclusion. The filing form is Form 706. It is due 9 months after the date of death. A 6-month extension is available via Form 4768.
One benefit worth knowing: the surviving spouse can inherit the deceased spouse's unused federal exclusion through a process called portability. To use it, the executor must timely file a federal Form 706 electing portability, even if no federal estate tax is owed. A simplified procedure for late elections is available within 5 years under Rev. Proc. 2022-32. This can effectively give a married couple a combined $30 million federal exclusion.
Federal Income Tax After Death
The estate tax is separate from income tax. Both can apply.
Final Form 1040: The deceased person's final federal income tax return covers January 1 of the year of death through the date of death. It is due April 15 of the following year, the same as any other individual return. The final Massachusetts income tax return (Form 1) follows the same April 15 deadline with a 6-month extension available via Form M-4868.
Estate income, Form 1041: Once someone dies, the estate becomes a separate taxpayer. If the estate earns more than $600 in income after death (interest, dividends, rent, capital gains from selling assets), it must file Form 1041, the U.S. Income Tax Return for Estates and Trusts. The estate needs its own Employer Identification Number (EIN), separate from the decedent's Social Security number. Do not use the decedent's SSN for estate income.
Step-up in basis: Under IRC § 1014, inherited property receives a new cost basis equal to the fair market value at the date of death. If your parent bought a stock for $10,000 and it was worth $90,000 when they died, your basis in that stock is $90,000, not $10,000. If you sell it shortly after inheriting it for $91,000, you owe capital gains tax on only $1,000. This is one of the most significant tax benefits in the federal code for inherited assets.
Massachusetts, as a common law state rather than a community property state, does not provide an automatic full step-up on jointly held property the way community property states do. Only the decedent's share of jointly owned property gets a step-up.
Qualifying Surviving Spouse: If you were widowed and have a dependent child, you may be able to file at the joint tax rates for two years after the year of death using the "Qualifying Surviving Spouse" status.
Form 1310: If you are claiming a refund on a deceased person's final return and you are not the court-appointed personal representative or a surviving spouse filing jointly, you need to file Form 1310 with the return.
Form 56: The executor or personal representative should file Form 56 with the IRS to notify them of the fiduciary relationship. File it promptly after taking on the role.
Tax Forms and Deadlines
| Tax | Form | Deadline | Extension |
|---|---|---|---|
| MA Estate Tax | M-706 | 9 months after death | 6 months via M-4768 (must pay 80% of estimated tax owed) |
| Federal Estate Tax | 706 | 9 months after death | 6 months via Form 4768 |
| Final Federal Income | 1040 | April 15 following year | 6 months via Form 4868 |
| Estate Income (federal) | 1041 | April 15 following year | 5.5 months via Form 7004 |
| MA Income (final) | 1 | April 15 following year | Extension via Form M-4868 |
| Fiduciary Notification | 56 | Promptly upon appointment | N/A |
For the Massachusetts estate tax extension via Form M-4768: the extension is automatic if you pay at least 80% of the final tax determined to be due within 9 months of death. File the form before the original due date.
Estate Tax Planning Specific to Massachusetts
The gap between Massachusetts ($2 million) and the federal threshold ($15 million) creates a planning window that does not exist in most states. A Massachusetts family with a combined estate between $2 million and $15 million may owe state estate tax but owe zero federal estate tax.
That is not a hypothetical scenario for most of eastern Massachusetts. A home in Newton, Brookline, or Cambridge worth $1.2 million combined with $500,000 in a 401(k), $200,000 in IRAs, and $200,000 in savings puts the estate at $2.1 million. That family owes Massachusetts estate tax but will likely never touch the federal threshold.
Some approaches Massachusetts residents use to plan for this:
Revocable living trusts: A trust can help your estate avoid probate, but it does not reduce Massachusetts estate tax. Assets held in a revocable trust are still counted in the taxable estate. The trust helps with the process and privacy, not the tax bill.
Irrevocable trusts: Properly structured irrevocable trusts can remove assets from the taxable estate for Massachusetts purposes, but they require giving up control of those assets. This is a strategy that requires an estate planning attorney.
Gifting: Annual federal gift tax exclusions allow you to give up to $19,000 per recipient per year (2026) without affecting your federal exemption. Massachusetts does not have a separate gift tax, so lifetime gifting can reduce the Massachusetts taxable estate over time.
Life insurance in an Irrevocable Life Insurance Trust (ILIT): Life insurance proceeds payable to the estate are included in the taxable estate. Proceeds payable to a properly structured ILIT are not. This is a common tool to provide liquidity to pay the estate tax without adding to it.
TOD and POD designations: Massachusetts does not allow Transfer-on-Death deeds for real estate (unlike many states). Real property owned solely by the deceased must go through probate unless held in a trust or as joint tenancy. Securities can use TOD registration under M.G.L. c. 190B, § 6-309. Bank accounts can use POD (payable on death) beneficiary designations. Both pass outside probate.
Joint tenancy with right of survivorship: Real property held as joint tenants with right of survivorship passes to the surviving owner outside probate. Half of the property's value is included in the deceased owner's estate.
For Massachusetts homeowners considering these options, the conversation with an estate planning attorney is worth having before the threshold becomes an issue, not after.
Massachusetts Homestead Protection
A note related to the home, which is often the largest estate asset: Massachusetts law (M.G.L. c. 188) provides homestead protection for your primary residence against unsecured creditors.
Automatic protection: $125,000 of equity, with no filing required.
Declared protection: $500,000 of equity, by filing a Declaration of Homestead at the county Registry of Deeds. The filing fee is typically $35 to $50.
Homestead protects against unsecured debts: credit cards, medical bills, personal loans. It does not protect against mortgage liens, federal tax liens, state tax liens, or MassHealth liens.
How MassHealth Interacts with the Estate
MassHealth (Massachusetts Medicaid) is required by federal law to seek reimbursement from the estates of members who were 55 or older when they received certain long-term care benefits. This is called estate recovery.
MassHealth targets probate assets: real estate, bank accounts, and personal property that passes through the probate estate. It does not automatically reach assets that pass outside probate.
Assets that are generally not subject to MassHealth recovery:
- Life insurance and annuities with named beneficiaries
- IRAs, 401(k)s, and other retirement accounts with named beneficiaries
- Joint accounts with right of survivorship
- Assets held in an irrevocable trust (if properly structured and transferred at least 5 years before MassHealth eligibility began)
The $25,000 waiver: MassHealth has a cost-effectiveness waiver. If the estate is $25,000 or less, MassHealth generally will not pursue recovery because the administrative cost exceeds what they would recover.
Irrevocable pre-need funeral trusts may be exempt from MassHealth asset limits. These trusts fund prepaid funeral arrangements and are treated differently from general financial assets. [This treatment is likely accurate but has not been verified against current MassHealth primary sources. Confirm with a Massachusetts elder law attorney.]
The interaction between MassHealth recovery and estate tax is real. If an estate is subject to both, the estate tax and MassHealth claim both come out of the same pool of assets before anything is distributed to beneficiaries. Planning for both together requires looking at the full picture, not each in isolation.
For a complete walkthrough of what happens in the months after a death, see the complete guide to what to do when someone dies in Massachusetts.
Frequently Asked Questions
Does Massachusetts have an inheritance tax?
No. Massachusetts does not tax beneficiaries on what they receive. The estate tax is paid by the estate before distributions. Beneficiaries receive their share after estate expenses, taxes, and debts are settled.
If the estate is below $2 million, does anything need to be filed?
No Massachusetts estate tax return is required. However, a final federal Form 1040 is still required for the year of death, and Form 1041 is required if the estate generates more than $600 in income after death.
My parent's estate includes a house worth $1.8 million. Does that trigger the Massachusetts estate tax?
Not by itself. The $2 million threshold applies to the gross estate, which includes everything: the house, retirement accounts, savings, investments, and personal property combined. If the total exceeds $2 million, a return is required. Whether tax is owed depends on the full calculation including the $99,600 credit.
Do I owe Massachusetts estate tax if I live in another state but own property in Massachusetts?
Potentially yes, on the Massachusetts property. Non-residents who die owning Massachusetts real estate or tangible personal property may owe Massachusetts estate tax proportional to those assets. The filing form is M-NRA.
What happens if the estate cannot pay the Massachusetts estate tax by the deadline?
You can get a 6-month extension by filing Form M-4768 before the 9-month due date, provided you pay at least 80% of the estimated tax at the time of filing. Interest accrues on any unpaid balance. Work with a CPA or estate attorney if there is a liquidity problem. The house may be the main asset but not a liquid one.
What to Do Next
If you are an executor or a family member managing the estate of someone who recently died in Massachusetts, here is the order of operations for the tax side:
- Get a rough value of the gross estate. Include real estate at current market value, retirement accounts, savings, investments, and any other assets.
- If the total is near or above $2 million, contact a Massachusetts estate attorney and a CPA immediately. The Form M-706 is due 9 months after death with no automatic extension unless you file M-4768 and prepay 80% of estimated tax.
- If the deceased received MassHealth benefits, notify MassHealth and understand what they may claim from the probate estate.
- Obtain an EIN for the estate before any estate income is received post-death.
- Make sure the final Form 1040 is filed for the year of death, regardless of estate size.
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This guide reflects Massachusetts and federal estate tax law as of April 2026, including the One Big Beautiful Bill (P.L. 119-21). Tax laws change. For estates over $2 million, consult a Massachusetts-licensed estate planning attorney and a CPA.
Sources: M.G.L. c. 65C (Massachusetts Estate Tax); IRS Publication 559; mass.gov/info-details/massachusetts-estate-tax-guide; mass.gov/info-details/dor-estate-tax-forms-and-instructions