A couple in their early seventies in suburban Boston sits down with their accountant expecting a routine year-end check-in. They own a $2.1 million home, have $1.4 million in retirement accounts, $400,000 in a brokerage account, $300,000 in cash, and a life insurance policy they own personally. They have always assumed the federal estate tax exemption, now $15 million per individual in 2026, makes their estate a non-issue. Then they hear two words that stop the conversation cold: Massachusetts estate tax.
The shock is common. Variations of this scenario fill threads in r/EstatePlanning and r/Bogleheads, where Massachusetts residents repeatedly post some version of “I thought I was way under the limit, why am I getting hit with a six-figure state tax bill?”
The answer is that Massachusetts runs its own estate tax, on its own scale, and it does not move with the federal number.
The Numbers That Actually Matter
- Couple: 71-year-old married filing jointly, Massachusetts residents
- Gross estate: $4.2 million (home, retirement, brokerage, cash, personally owned life insurance)
- Federal exposure: Effectively zero
- Massachusetts exposure (worst case, no planning): Roughly $380,000
Why The Massachusetts Tax Is The Whole Story
Massachusetts taxes estates above a $2 million exemption, raised from $1 million in 2023, with a progressive rate that starts around 7% and tops out at 16%. On a $4.2 million estate, that produces about $200,000 to $220,000 in tax.
The bigger trap is structural.
Massachusetts does not allow portability of the unused exemption between spouses. If everything passes to the surviving spouse under the unlimited marital deduction, no tax is due at the first death, but the first spouse’s $2 million exemption disappears. When the second spouse dies owning the full $4.2 million, only one $2 million exemption remains. Stack that on top of a personally owned life insurance policy that gets pulled into the taxable estate, and the combined bill can reach the $380,000 headline figure.
One simple comparison frames the stakes. The current 10-year Treasury yields about 4%. A $380,000 tax bill is roughly what a $2 million bond ladder produces in income over four full years. That is the cost of doing nothing.
Three Paths That Actually Move The Number
- Build a credit-shelter (bypass) trust. At the first death, up to $2 million in funds are placed in an irrevocable trust that benefits the surviving spouse but is excluded from their estate. Both $2 million exemptions get used. The custom instructions analysis shows this single move cuts exposure by roughly $170,000. For most Massachusetts couples between $2 million and $5 million, this is the highest-leverage step available.
- Move the life insurance into an Irrevocable Life Insurance Trust (ILIT). A policy the insured owns is includible in the gross estate at the insured’s death benefit. Re-titling it into an ILIT, properly structured and seasoned, removes the death benefit from Massachusetts’s reach entirely.
- Change residency. Florida, Texas, and Nevada have no state estate tax. The trade-off is real: Massachusetts per capita income runs $93,575 versus $73,340 in Florida, and $69,762 in Texas, and family, doctors, and grandchildren rarely move with you. For a retired couple already considering a southern move, the estate-tax savings work as a meaningful tiebreaker for a couple already weighing the move.
What To Do This Quarter
Pull the most recent statements together and total the gross estate, including the life insurance death benefit, not the cash value. If the number lands above $2 million, the existing will is almost certainly leaving money on the table. The most expensive mistake in this scenario is the simplest one: an “I love you” will that passes everything outright to the surviving spouse. It feels generous and costs the family a six-figure tax bill that disciplined planning largely eliminates.
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