Massachusetts Estate Tax 2026: Exemption, Rates, and What Heirs Need to Know
Massachusetts imposes an estate tax on estates above $2,000,000 — a threshold that catches many upper-middle-class families with appreciated real estate and retirement savings. Unlike New York, there's no cliff. But the combination of a low exemption, no portability between spouses, and no inflation indexing makes Massachusetts one of the most consequential state estate taxes for families who don't see it coming.
- Exemption: $2,000,000 per decedent (raised from $1M in 2023; not inflation-indexed).1
- Tax on excess only: Unlike the old Massachusetts system, the 2023 reform applies tax only to the amount above $2M — there is no cliff provision like New York's.2
- Rates: 7.2% on the first dollar above $2M, rising to 16% on amounts above approximately $10.1M.
- No MA inheritance tax: Massachusetts does not tax beneficiaries based on their relationship to the decedent. The estate pays before distribution.
- No MA gift tax: Massachusetts has no state gift tax — and unlike New York, Massachusetts does not add back gifts made within any lookback period. Lifetime gifts permanently reduce the taxable estate.3
- No portability: Massachusetts does not recognize the federal DSUE election. Each Massachusetts estate gets one $2M exemption — couples cannot share unused exemption between spouses.1
- Federal gap: The federal estate tax exemption is $15,000,000 (permanently set by OBBBA, July 2025). Estates between $2M and $15M face Massachusetts estate tax with no federal offset.
- Filing: Form M-706, due 9 months from date of death.
What is the Massachusetts estate tax — and who actually pays it?
Massachusetts imposes an estate tax on the estate of a deceased Massachusetts resident. This is not an inheritance tax on beneficiaries — it is a tax on the decedent's estate before assets are distributed to heirs.
- The executor or personal representative files Form M-706 and pays any tax owed from estate assets before making distributions to heirs.4
- Beneficiaries receive their share after the estate tax is paid. A $3M estate with an $82,400 Massachusetts estate tax distributes the remaining balance — not the full $3M — to heirs.
- Unlike the five states with inheritance taxes (New Jersey, Pennsylvania, Maryland, Nebraska, Kentucky), Massachusetts does not distinguish between beneficiaries by their relationship to the decedent. The estate tax is based on the gross estate value — not on who is inheriting.
Massachusetts does not impose a separate inheritance tax. If you're inheriting from a Massachusetts resident, you will not receive a personal tax bill from the state. But you may receive less than the full gross estate if the estate was above the $2M threshold and owed Massachusetts estate tax.
The 2026 Massachusetts estate tax exemption: $2,000,000
For deaths occurring in 2026, the Massachusetts estate tax exemption is $2,000,000.1 Estates at or below this amount owe no Massachusetts estate tax. The exemption applies per decedent — couples do not share a combined exemption unless they structure their estates with credit shelter trusts.
The $2M exemption was established by Massachusetts tax reform legislation effective for deaths after December 31, 2023 — raising the previous $1M threshold. The exemption is not adjusted for inflation and does not change from year to year under current law unless the Legislature acts again.
- A Boston-area home purchased 20 years ago for $400,000 may now be worth $900,000–$1,500,000 or more.
- Add a retirement account ($300K–$800K), taxable brokerage ($200K–$400K), and life insurance — and a household that considers itself comfortably middle-class may have a gross estate well above $2M.
- Massachusetts has some of the highest real estate values in the country. Cape Cod, Martha's Vineyard, Nantucket, and suburban Boston regularly produce estates above the threshold for families who were not "wealthy" during their lifetimes.
- The $2M exemption is per person — not per couple. A couple with a $4M estate who passes everything to the surviving spouse at first death may face full Massachusetts estate tax at second death on the entire $4M against only one $2M exemption.
The federal-Massachusetts exemption gap
One of the most important planning problems in Massachusetts is the gap between the state exemption and the federal exemption:
| Level | 2026 Exemption | Notes |
|---|---|---|
| Federal estate tax | $15,000,000 per person | Permanently set by OBBBA (July 2025); spousal portability available |
| Massachusetts estate tax | $2,000,000 per person | Not inflation-indexed; no portability |
| The gap | $13,000,000 | Estates in this range owe MA estate tax but zero federal estate tax |
For the vast majority of Massachusetts families, the federal estate tax is not a concern — their estates are well below $15M. But the Massachusetts estate tax catches families from roughly $2M to $15M who owe state taxes with no federal offset whatsoever. A family with a $5M estate may face $292,000 in Massachusetts estate tax and $0 in federal estate tax.
Massachusetts estate tax rates: 7.2% to 16%
The Massachusetts estate tax uses a graduated rate schedule derived from the old federal credit for state death taxes (IRC §2011, pre-EGTRRA 2001). The 2023 reform applies a credit equal to the tax that would otherwise apply to the first $2M, so only the excess above $2M is effectively taxed — at the rates applicable to that marginal slice of the estate.2
The first dollar above $2M is taxed at 7.2%. Rates escalate gradually, reaching 16% for amounts above roughly $10.1M above the $2M base (estates over $12.1M total).
| Excess Above $2M Exemption | Marginal Rate on That Slice |
|---|---|
| First $100,000 ($2M–$2.1M total estate) | 7.2% |
| $100K–$600K excess ($2.1M–$2.6M total) | 8.0% |
| $600K–$1.1M excess ($2.6M–$3.1M total) | 8.8% |
| $1.1M–$1.6M excess ($3.1M–$3.6M total) | 9.6% |
| $1.6M–$2.1M excess ($3.6M–$4.1M total) | 10.4% |
| $2.1M–$3.1M excess ($4.1M–$5.1M total) | 11.2% |
| $3.1M–$4.1M excess ($5.1M–$6.1M total) | 12.0% |
| $4.1M–$5.1M excess ($6.1M–$7.1M total) | 12.8% |
| $5.1M–$6.1M excess ($7.1M–$8.1M total) | 13.6% |
| $6.1M–$7.1M excess ($8.1M–$9.1M total) | 14.4% |
| $7.1M–$8.1M excess ($9.1M–$10.1M total) | 15.2% |
| Over $8.1M excess (over $10.1M total estate) | 16.0% |
| Gross Estate Value | Approx. MA Estate Tax | Effective Rate (on full estate) |
|---|---|---|
| $2,000,000 | $0 | 0% |
| $2,500,000 | $39,200 | 1.6% |
| $3,000,000 | $82,400 | 2.7% |
| $4,000,000 | $180,800 | 4.5% |
| $5,000,000 | $292,000 | 5.8% |
| $6,000,000 | $411,200 | 6.9% |
| $8,000,000 | $673,600 | 8.4% |
| $10,000,000 | $968,000 | 9.7% |
| $15,000,000 | $1,767,200 | 11.8% |
Calculated using the IRC §2011 rate table with $99,600 credit (tax on first $2M). Use Form M-706 and an estate attorney for exact amounts. Verified against SSB LLC and mass.gov computation examples.2
How Massachusetts differs from the old $1M system — and from New York
The 2023 Massachusetts tax reform made a critical structural change. Under the old $1M exemption:
- An estate of $999,000 owed $0 Massachusetts estate tax.
- An estate of $1,001,000 owed tax on the entire $1,001,000 — not just the $1,000 excess. This created a true "cliff" where crossing the threshold by a small amount caused a large tax bill.
The 2023 reform eliminated that cliff. Under the current $2M threshold with the $99,600 credit mechanism, crossing $2M by $100 generates only a small additional tax — not a sudden $99,600 bill. The tax scales gradually with the estate size. This is a meaningful improvement, though a $2M estate may still generate a surprise bill for families who did not expect the threshold to apply to them.
New York's estate tax still has a cliff: estates above 105% of the $7,350,000 exemption lose the entire exemption credit at once, potentially owing $700,000+ in tax for crossing a threshold by a small amount. Massachusetts's graduated structure is more forgiving — but the much lower $2M exemption means a far larger share of Massachusetts families are in scope at all.
Massachusetts estate tax on inherited assets by type
The Massachusetts estate tax applies to the gross estate — all assets owned by or controlled by the decedent at death, regardless of how they pass to heirs:
| Asset Type | Included in MA Taxable Estate? | Notes |
|---|---|---|
| Primary residence / real estate | Yes | Date-of-death fair market value; heirs receive step-up basis (IRC §1014) regardless of estate tax owed |
| Brokerage / investment accounts | Yes | FMV at date of death; step-up basis resets for heirs |
| IRAs and 401(k)s | Yes | Full account balance included in gross estate; heirs also separately owe income tax on distributions |
| Life insurance (estate as beneficiary) | Yes | Included in gross estate under IRC §2042 |
| Life insurance (named individual beneficiary) | Included if IRC §2042 applies | Excluded if decedent had no incidents of ownership and estate is not named beneficiary |
| Revocable living trust assets | Yes | Assets in a revocable trust are included under IRC §2038 — they pass outside probate but remain in the gross estate |
| Joint tenancy (JTWROS) — spousal | 50% of FMV | Massachusetts generally follows federal rules: 50% for spousal JTWROS |
| Joint tenancy (JTWROS) — non-spousal | Full value, reduced by heir's contribution | Decedent's portion based on contribution ratio |
| Vacation/rental real estate in MA | Yes | MA real estate owned by nonresidents is also subject to MA estate tax on a pro-rata basis — see nonresident section below |
| Business interests | Yes — date-of-death FMV | Qualified appraiser valuations; minority interest and lack-of-marketability discounts may apply |
| Annuities | Yes — present value of remaining payments | Complex valuation; often overlooked in estate planning discussions |
Note the double-tax burden on inherited retirement accounts: the IRA or 401(k) balance is counted in the gross estate (potentially pushing the total above $2M), and the beneficiary separately owes income tax on distributions over the 10-year rule period. See Inherited IRA 10-Year Rule Guide for distribution strategies.
Married couples: no portability and what to do instead
The federal estate tax allows surviving spouses to use the deceased spouse's unused exemption (the "DSUE" election via Form 706). A married couple can effectively share a $30M combined federal exemption if they file the portability election on time.
Massachusetts does not recognize this portability.1 Each Massachusetts estate gets exactly one $2M exemption. If the first spouse to die leaves everything outright to the surviving spouse via the unlimited marital deduction, the surviving spouse's estate at second death may face Massachusetts estate tax on the entire combined estate against only one $2M exemption.
- Husband dies in 2026 with a $3M estate; everything passes outright to wife via the unlimited marital deduction → $0 Massachusetts estate tax at his death
- Wife now has a $5M estate (her $2M + his $3M)
- At her death: $5M estate, only one $2M MA exemption → Massachusetts estate tax ≈ $292,000
- A credit shelter trust at husband's death could have sheltered $2M from wife's estate → reducing her taxable estate from $5M to $3M → saving approximately $210,000 in Massachusetts estate tax
The state QTIP election
Massachusetts allows a state-level QTIP (Qualified Terminable Interest Property) election. A QTIP trust lets the first-to-die spouse's estate claim the unlimited marital deduction while still directing where assets ultimately go (typically to children from a prior marriage or a designated remainder beneficiary). QTIP trusts are often combined with credit shelter trusts for comprehensive Massachusetts estate tax planning.
No Massachusetts gift tax — and no lookback clawback
Massachusetts has not imposed a state gift tax since 1971.3 Residents can make unlimited lifetime gifts without incurring any Massachusetts tax at the time of the gift.
Unlike New York (which claws back gifts made within 3 years of death into the NY taxable estate), Massachusetts does not add back lifetime gifts regardless of when they were made. A gift completed more than a few days before death is permanently out of the Massachusetts taxable estate.
- New York: Gifts made within 3 years of death are added back to the NY taxable estate — early planning is required or the strategy fails
- Massachusetts: No lookback period — gifts remove assets from the MA taxable estate permanently as soon as they are complete
- Result: A systematic annual gifting program is even more effective in Massachusetts than in New York, because there is no clawback window to wait through
- The federal annual gift exclusion ($19,000 per recipient in 2026) allows meaningful transfers each year. Gifts above the annual exclusion use the federal lifetime exemption ($15M) without any Massachusetts consequence
This asymmetry — no MA gift tax and no clawback period — makes lifetime gifting the single most powerful tool for reducing Massachusetts estate tax exposure. For families with estates modestly above the $2M threshold, a few years of systematic gifting can bring the taxable estate under the exemption entirely.
Filing: Form M-706, deadline, and nonresidents
Who must file
The personal representative of a Massachusetts resident decedent must file Form M-706 (Massachusetts Estate Tax Return) if the gross estate plus adjusted taxable gifts exceeds $2,000,000.4
Deadline: 9 months from date of death
The Massachusetts estate tax return is due 9 months from the date of death.4 An extension of time to file may be granted upon request, but any tax owed must generally be paid by the original 9-month deadline to avoid interest and penalties.
Where to file
Form M-706 is filed with the Massachusetts Department of Revenue. Current forms and instructions are available at mass.gov.
Nonresident decedents — MA real estate
Massachusetts imposes estate tax on real property and tangible personal property located in Massachusetts that is owned by a nonresident decedent. The Massachusetts estate tax applies pro-rata to the Massachusetts-situs assets relative to the decedent's entire estate. A Connecticut or Rhode Island resident who owns a Cape Cod vacation home, Martha's Vineyard property, or Nantucket real estate may have Massachusetts estate tax obligations on those properties — even though they never lived in Massachusetts.
Non-Massachusetts residents with significant Massachusetts real estate should explicitly account for this exposure in their estate plans. A Massachusetts estate attorney should evaluate the liability before distributions are made from any estate containing MA real property.
Planning strategies to reduce Massachusetts estate tax
The combination of a low $2M exemption, no portability, no inflation indexing, and no gift tax clawback creates both a significant tax problem and a rich set of strategies to address it. These strategies work best when implemented well before death — the earlier a family acts, the more options are available.
1. Credit shelter trusts (bypass trusts) — essential for married couples
At the first spouse's death, assets equal to the Massachusetts exemption ($2M) are placed in a credit shelter trust rather than passing outright to the surviving spouse. The trust benefits the surviving spouse during their lifetime (for income, health, maintenance, and support under a HEMS standard or other terms) and then passes to children or other beneficiaries without being included in the survivor's taxable estate. This shelters $2M from Massachusetts estate tax at the second death, potentially saving $82,000–$200,000+ in tax depending on the estate's growth.
A $4M couple who plans with a credit shelter trust shelters $2M at first death and leaves the surviving spouse with only a $2M estate — which may be fully exempt at second death. The same couple who passes everything outright to the survivor faces $180,800 in Massachusetts estate tax at second death.
2. Lifetime gifting — start now, no clawback
Because Massachusetts has no gift tax and no gift lookback period, systematic gifting is the most straightforward way to reduce the taxable estate. Families with estates modestly above the $2M threshold can eliminate the Massachusetts estate tax entirely over a few years of annual gifting without any complicated trust structure. Use the federal annual gift exclusion ($19,000 per recipient per year in 2026) to transfer assets without any federal gift tax return requirement.
3. Irrevocable Life Insurance Trusts (ILITs)
Life insurance owned by the decedent at death is included in the Massachusetts gross estate under IRC §2042. Transferring a policy to an irrevocable life insurance trust (ILIT) removes it from the estate — provided the decedent surrenders all incidents of ownership. Because Massachusetts has no gift clawback, the 3-year federal gift rule is the binding constraint (a transferred policy is included in the federal gross estate if the decedent dies within 3 years of transfer). A survivorship life insurance policy held in an ILIT can fund estate taxes while remaining outside both spouses' estates.
4. Spousal Lifetime Access Trusts (SLATs)
A SLAT allows one spouse to gift assets to an irrevocable trust for the benefit of the other spouse, removing those assets from both estates while preserving indirect access through the beneficiary spouse. Massachusetts's no-clawback rule is especially favorable here: assets contributed to the SLAT are immediately and permanently removed from the Massachusetts gross estate. Mutual SLATs require careful structuring (different trustees, different terms) to avoid the reciprocal trust doctrine.
5. Qualified Personal Residence Trusts (QPRTs)
A QPRT transfers a home to an irrevocable trust while allowing the grantor to live in it rent-free for a fixed term. At the end of the term, the home passes to beneficiaries (typically children) at a discounted gift tax value. If the grantor survives the term, the home is out of the Massachusetts gross estate. Given that Massachusetts real estate values are among the highest in the country, removing a primary or vacation home from the taxable estate can have a large impact — especially for Cape Cod, Nantucket, or Martha's Vineyard properties that have appreciated significantly.
6. Charitable planning
Charitable bequests reduce the Massachusetts gross estate dollar-for-dollar under IRC §2055. A charitable remainder trust (CRT) provides income to the donor during life, with the remainder passing to charity at death — reducing the estate and generating a current income tax deduction. For families charitably inclined and with estates near the $2M threshold, integrating charitable goals into the estate plan can achieve both philanthropic and tax objectives simultaneously. See Charitable Giving from an Inheritance.
7. Irrevocable trusts and asset protection
Massachusetts Domestic Asset Protection Trusts (MAPTs, authorized by the 2012 Massachusetts Self-Settled Spendthrift Trust Act) allow a grantor to contribute assets to a trust and remain a discretionary beneficiary while removing those assets from the estate. There are strict requirements and a 5-year lookback for creditors, but for long-horizon planning, these structures can reduce both the Massachusetts estate tax exposure and provide asset protection simultaneously.
How Massachusetts compares to other state estate taxes
| State | Estate Tax? | 2026 Exemption | Max Rate | Notable Feature |
|---|---|---|---|---|
| Massachusetts | Yes | $2,000,000 | 16% | No cliff; graduated rates on excess; no portability; no gift tax clawback |
| Oregon | Yes | $1,000,000 | 16% | Lowest exemption in the country; catches many homeowners |
| Washington | Yes | $2,193,000 | 20% | Highest marginal rate in the country; top rate above $9M |
| Illinois | Yes | $4,000,000 | 16% | No portability; Illinois real estate drives many estates into scope |
| New York | Yes | $7,350,000 | 16% | Cliff provision — estates above $7,717,500 lose entire exemption; 3-year gift clawback |
| Federal (all states) | Yes | $15,000,000 | 40% | Permanent (OBBBA); spousal portability; indexed for inflation |
Massachusetts has the second-lowest estate tax exemption in the country after Oregon. Its combination of a low threshold, no inflation indexing, no portability, and high real estate values makes it one of the most impactful state estate taxes for families who have built wealth through homeownership and retirement savings rather than business exits or large investment portfolios.
What the Massachusetts estate tax means if you're inheriting from a MA resident
If you're an heir inheriting from a Massachusetts resident with a significant estate, here's what the estate tax means in practice:
- You personally don't file or pay the Massachusetts estate tax. The executor or personal representative handles it from estate assets before distributions to heirs.
- You may receive less than the gross estate value. A $3M estate with an $82,400 Massachusetts estate tax bill distributes less to heirs. Factor this into your expectations when you're named as a beneficiary.
- Ask the executor whether a Massachusetts estate tax return is being filed. If the estate exceeds $2M and no return is being prepared, that's a red flag that requires investigation.
- Watch the 9-month filing deadline. The executor has 9 months from date of death to file and pay. Delays generate interest charges that further reduce the estate available for distribution.
- Step-up basis still applies regardless of estate tax. Even if the estate paid Massachusetts estate tax, you as the heir receive a step-up in cost basis on inherited assets under IRC §1014. The step-up resets your capital gain exposure on inherited stocks, real estate, and other assets — it is a separate benefit unrelated to the estate tax payment. See Step-Up Basis Guide.
- IRAs are double-taxed. Retirement accounts are counted in the gross estate for Massachusetts estate tax and — separately — you owe income tax on distributions you take as a beneficiary. If you inherit a $1.5M IRA from a Massachusetts resident with a $3M total estate, that IRA is part of what generated the $82,400 estate tax bill, and you will separately owe income tax on each distribution you take over the 10-year rule period. See Inherited IRA 10-Year Rule Guide.
Frequently asked questions
My parent died in Massachusetts with a $1.8M estate. Is there Massachusetts estate tax?
No. The 2026 Massachusetts estate tax exemption is $2,000,000. An estate of $1.8M is fully exempt — no Massachusetts estate tax is owed, and no Form M-706 needs to be filed.
My parent died with a $2.5M estate. How much Massachusetts estate tax is owed?
Approximately $39,200. The Massachusetts estate tax applies to the $500,000 above the $2M exemption. The first $100K of excess is taxed at 7.2% ($7,200), and the next $400K of excess at 8.0% ($32,000), for a total of approximately $39,200. The executor will compute the exact amount on Form M-706.
Does Massachusetts recognize the federal portability election?
No. The federal portability election (surviving spouse using the deceased spouse's unused federal exemption via Form 706 DSUEA) does not apply to Massachusetts estate tax. Each Massachusetts estate gets one $2M exemption — it cannot be transferred to a surviving spouse. This is why credit shelter trusts are so important for Massachusetts married couples. File the federal Form 706 for the federal portability election, but do not expect it to reduce Massachusetts estate tax.
Can I reduce Massachusetts estate tax by making gifts before death?
Yes — and Massachusetts's rules are more favorable than New York's. Massachusetts has no gift tax and no gift clawback period. Gifts completed during life permanently remove assets from the Massachusetts taxable estate, with no minimum time required between the gift and death for Massachusetts purposes. The federal annual gift exclusion ($19,000 per recipient in 2026) allows meaningful transfers each year. Systematic gifting is one of the most effective Massachusetts estate tax reduction strategies.
I live in Connecticut but own a vacation home on Cape Cod worth $1.5M. Does Massachusetts estate tax apply to the Cape Cod property?
Potentially, yes. Massachusetts imposes estate tax on Massachusetts-situs real estate owned by nonresident decedents, pro-rated against the total estate. If your total estate is $5M and $1.5M is the Cape Cod property, roughly 30% of any Massachusetts estate tax liability would be attributable to the Massachusetts real estate. A Massachusetts estate attorney should evaluate the specific situation.
My sibling and I are both inheriting from our parent's Massachusetts estate. Do we each get a separate exemption?
No. The Massachusetts estate tax is based on the gross estate — not on how many beneficiaries are inheriting. There is one $2M exemption per estate (per decedent), regardless of how many children, siblings, or other heirs receive distributions.
What is the Massachusetts estate tax on IRAs and retirement accounts?
IRAs, 401(k)s, and other retirement accounts are included in the Massachusetts gross estate at their full account balance on the date of death — just like at the federal level. There is no Massachusetts exclusion for retirement accounts. A $1.5M IRA increases the gross estate by $1.5M for Massachusetts estate tax purposes. If you are inheriting the IRA, you will also separately owe income tax on distributions — creating a double-tax situation. See Inherited IRA 10-Year Drawdown Optimizer for distribution strategy modeling.
Sources
- Massachusetts Department of Revenue. Massachusetts Estate Tax Guide. $2,000,000 exemption per decedent for deaths in 2026 (raised from $1M by 2023 tax relief legislation). No inflation indexing. No portability of unused exemption between spouses. mass.gov — Massachusetts Estate Tax Guide.
- Samuel, Sayward & Baler LLC. "Five Things to Know About the Massachusetts Estate Tax." Confirms no cliff effect under 2023 reform — tax applies only to excess above $2M. Marginal rates: 7.2% on first dollar above $2M, up to 16% on large estates. Example computations: $2.5M estate ≈ $39,200; $5M estate ≈ $292,000. ssbllc.com — Five Things About Massachusetts Estate Tax. Cross-verified against Taxo.com Massachusetts estate tax 2026 guide and CRR Advisors gifting analysis.
- Massachusetts abolished its gift tax in 1971. No MA gift tax applies to lifetime transfers. Massachusetts does not add back prior gifts to the taxable estate (unlike New York's 3-year clawback under NY Tax Law §954). Confirmed via Herbst Law Group, "Gifting Impact to the Massachusetts Estate Tax" and CRR Advisors, "Estate Tax & Gifting in Massachusetts." herbstlawgroup.com — MA Gifting Impact.
- Massachusetts Department of Revenue. Form M-706 (Massachusetts Estate Tax Return). Filing required when gross estate plus adjusted taxable gifts exceeds $2,000,000. Deadline: 9 months from date of death; extension to file available; tax payment due at 9 months regardless of extension. mass.gov — DOR Estate Tax Forms and Instructions.
Massachusetts estate tax exemption ($2,000,000), rates (7.2%–16%), and no-cliff structure verified for 2026 against mass.gov and multiple Massachusetts estate planning attorney publications. Federal values per IRS Rev. Proc. 2025-32 and OBBBA (One Big Beautiful Bill Act, July 2025; $15M permanent exemption). Massachusetts portability limitation confirmed under Massachusetts estate tax statute. No-gift-tax and no-clawback rules confirmed against Massachusetts DOR and estate planning sources. Last reviewed June 2026.
Get matched with an advisor who understands Massachusetts estate planning
Massachusetts's $2M estate tax exemption catches far more families than most people expect — especially those with appreciated Boston-area real estate, retirement accounts, and life insurance. A $3M estate may owe $82,000 in Massachusetts estate tax; a $5M estate may owe $292,000. The tax is due 9 months after death, and the strategies to reduce it (credit shelter trusts, systematic gifting, ILITs) require planning years before that deadline. A fee-only financial advisor specializing in inheritance and estate planning can model whether your family is exposed to Massachusetts estate tax, evaluate whether your current plan adequately addresses the no-portability trap, and coordinate with your estate attorney on the most effective strategies for your specific situation. If you've recently inherited from a Massachusetts resident and want to understand whether estate taxes have already reduced what you'll receive, a specialist can give you a clear picture.