Maine Estate Tax 2026: The $7.16M Exemption, No Portability, and the Federal-State Gap
Maine imposes its own estate tax on estates above $7,160,000 — an inflation-indexed threshold that rises most years under Maine Revised Statutes Title 36, §4062. In 2026, the federal exemption is $15,000,000 per person (permanently raised by the One Big Beautiful Bill Act). Maine's exemption is $7,160,000. Estates between those two numbers — a $7.84 million band — owe Maine estate tax while paying zero federal tax. Rates run 8% to 12%, applied to the amount above the Maine threshold. Unlike New York, Maine has no cliff: the tax applies only to the amount above the exemption, not to the entire estate. Maine does not allow portability between spouses. This guide covers what Maine families and their heirs need to know in 2026.
- Exemption: $7,160,000 per decedent (inflation-indexed annually; was $7,000,000 for 2025). Maine's exemption is set under Maine Revised Statutes Title 36, §4062 and adjusted for inflation each year — unlike many state estate taxes that are fixed by statute.1
- Rates: Graduated, 8% to 12%, applied to the amount of the Maine taxable estate above the $7.16M exemption. There is no cliff provision (unlike New York). Rate brackets: 8% on the first $3M above the exemption; 10% on the next $3M; 12% on any amount above $6M over the exemption.1
- No portability: Maine does not allow a surviving spouse to inherit the deceased spouse's unused Maine estate tax exemption. At the first spouse's death, that $7.16M exemption is permanently lost unless used through a credit shelter trust. A married couple that does no planning has a combined effective Maine exemption of $7.16M — not $14.32M.2
- No Maine gift tax: Maine does not impose a standalone gift tax. However, the Maine taxable estate includes gifts made during the one-year period ending on the date of death — a 1-year lookback (shorter than New York's 3-year clawback). Gifts made more than one year before death are not added back to the estate.1
- No Maine inheritance tax: Maine has no inheritance tax based on the beneficiary's relationship to the decedent. The estate pays Maine estate tax before distributions; individual heirs do not pay Maine tax on amounts they receive.
- Filing deadline: Form 706ME must be filed within 9 months of the decedent's date of death. An automatic extension is available equal to any granted federal extension or 6 months, whichever is longer. The extension applies to the filing deadline only — taxes owed must still be paid within 9 months to avoid interest.3
- Who must file: Form 706ME is required if the estate exceeds $7,000,000, if an IRC-required federal estate tax return must be filed, or if the estate has a reportable amount on certain Form 706ME lines. Estates under the Maine threshold generally do not need to file.3
How Maine estate tax is calculated
Maine's calculation is straightforward compared to states with cliff provisions. The estate pays tax only on the amount above the $7.16M exemption — not on the full estate value. This creates a smooth, graduated result as estate size increases.
The rate brackets apply to the Maine taxable estate above the $7,160,000 exemption:
| Amount above $7.16M | Marginal rate | Cumulative tax at top of bracket |
|---|---|---|
| $0 – $3,000,000 | 8% | $240,000 |
| $3,000,001 – $6,000,000 | 10% | $540,000 |
| Above $6,000,000 | 12% | $540,000 + 12% of excess |
Worked example: $10 million estate
Maine taxable estate: $10,000,000
Less exemption: – $7,160,000
Taxable amount: $2,840,000
Tax: $2,840,000 × 8% = $227,200
Federal tax: $0 (estate is below the $15M federal threshold)
Worked example: $12 million estate
Maine taxable estate: $12,000,000
Less exemption: – $7,160,000
Taxable amount: $4,840,000
Tax: $3,000,000 × 8% + $1,840,000 × 10% = $240,000 + $184,000 = $424,000
Federal tax: $0
Approximate Maine estate tax by estate size (2026)
| Estate size | Maine estate tax (approx.) | Federal estate tax | Notes |
|---|---|---|---|
| $7,000,000 | $0 | $0 | Below $7.16M threshold — no Maine tax |
| $7,500,000 | ~$27,200 | $0 | $340K × 8% |
| $8,000,000 | ~$67,200 | $0 | $840K × 8% |
| $9,000,000 | ~$147,200 | $0 | $1.84M × 8% |
| $10,000,000 | ~$227,200 | $0 | $2.84M × 8% |
| $11,000,000 | ~$324,000 | $0 | $240K + $840K × 10% |
| $12,000,000 | ~$424,000 | $0 | $240K + $1.84M × 10% |
| $13,000,000 | ~$524,000 | $0 | $240K + $2.84M × 10% |
| $14,000,000 | ~$641,000 | $0 | $540K + $840K × 12% |
| $15,000,000 | ~$761,000 | $0 | $540K + $1.84M × 12% |
| $20,000,000 | ~$1,361,000 | $600,000 | Both ME and federal estate tax apply above $15M |
Approximate figures. Maine taxable estate may differ from gross estate due to deductions, gifts, and Maine elective property rules. Consult a tax professional for a precise estimate.
The federal-Maine gap: who gets hit
The central planning problem for Maine residents with significant estates is the gap between Maine's $7.16M threshold and the federal $15M threshold (OBBBA). Every dollar in this $7.84M band is subject to Maine estate tax — at effective rates of 2–5% of the total estate — while owing nothing federal.
Who falls into this gap without realizing it:
- Coastal homeowners. A Bar Harbor or Kennebunkport summer home purchased decades ago may now be worth $2–4M on its own. Combined with a $3M retirement account, $1M brokerage portfolio, and $500K life insurance benefit, the estate easily clears $7.16M.
- Retiring professionals. A Portland physician or attorney who maxed out retirement accounts for 30 years, owns a home in a desirable neighborhood, and has business equity can arrive at $8–12M without ever thinking of themselves as an estate tax concern.
- Part-year residents with Maine property. Maine taxes Maine-situs property regardless of where the decedent was domiciled. A Massachusetts resident who owns a Maine lake house may owe Maine estate tax on the value of that property, even if their Massachusetts estate is handled separately.
- Widowed individuals without a credit shelter trust. After one spouse's death, the survivor holds the combined estate with a single $7.16M exemption. Without portability or prior planning, an $11M combined estate at the second death generates ~$324K in Maine estate tax that could have been avoided.
No portability: the married couple trap
Maine does not allow portability — when the first spouse dies, their $7.16M Maine estate tax exemption is gone unless it was used. This is different from the federal estate tax, which allows a surviving spouse to inherit unused exemption by timely filing Form 706.
What this means in practice:
| Scenario | Combined estate | No planning | With credit shelter trust |
|---|---|---|---|
| First spouse dies, leaves everything to survivor | $11,000,000 | Second death: $324,000 Maine tax | Second death: $0–$27,200 Maine tax |
| First spouse dies, leaves everything to survivor | $14,000,000 | Second death: $641,000 Maine tax | Second death: $0–$80,000 Maine tax |
A credit shelter trust (also called a bypass trust or AB trust) solves the portability problem by directing assets equal to the first spouse's Maine exemption ($7.16M) into a trust at death, rather than to the surviving spouse outright. The trust corpus is not part of the survivor's taxable estate. The surviving spouse can still benefit from trust income and principal under a HEMS standard — they don't lose use of the money, they lose the estate tax exposure.
For a Maine couple with an $11M combined estate, a credit shelter trust funded at the first death can eliminate nearly all Maine estate tax at the second death. The difference between "no planning" and "basic trust planning" is often $300,000–$600,000 in avoidable Maine estate tax.
The 1-year gift lookback: Maine's shorter window
Maine adds to the taxable estate any gifts made during the one year before death. This is notably shorter than New York's 3-year gift clawback and shorter than the federal 3-year lookback for certain gifts.
What this means for gifting strategy:
- Annual exclusion gifts ($19,000 per recipient in 2026) made more than 1 year before death are permanently out of the Maine estate.
- Larger lifetime gifts above the annual exclusion, made more than 1 year before death, are also outside Maine's reach — unlike federal law, which uses a unified credit that may still count lifetime gifts.
- Gifts made within the last year of life are added back into the Maine taxable estate, so deathbed gifting doesn't help.
A Maine resident with a $10M estate who makes $1M in gifts to children more than 1 year before death reduces the Maine taxable estate by $1M — saving approximately $80,000 in Maine estate tax. Done systematically over several years, a gifting program can move assets out of the Maine estate well before the 1-year window.
Maine has no standalone gift tax, so there is no Maine-level cost to lifetime gifts (beyond the 1-year lookback rule). Gifts above the federal annual exclusion count against the federal lifetime exemption but, under OBBBA, that exemption is now $15M — large enough that most Maine families will never exhaust it through normal estate planning.
What heirs need to know when inheriting from a Maine estate
If you've inherited from someone who died as a Maine domiciliary or who owned Maine property, here's what to watch for:
Does the estate owe Maine estate tax?
The personal representative (executor) is responsible for determining whether the estate exceeds $7.16M and, if so, filing Form 706ME and paying any tax within 9 months of death. As a beneficiary, you typically don't pay Maine estate tax directly — it comes out of the estate before distribution. But a large Maine estate tax bill can reduce the net inheritance significantly.
Non-Maine residents with Maine property
Maine taxes the Maine-situs property of non-resident decedents. If your parent lived in Massachusetts but owned a Maine vacation home, the Maine estate tax is prorated based on the Maine property's share of the total estate. The Maine estate tax return covers the Maine-connected portion even though the bulk of the estate is handled in Massachusetts.
The 9-month filing deadline
Form 706ME is due 9 months from date of death. If the estate has significant assets — real estate valuations, business interests, out-of-state property — getting a qualified appraisal and preparing the return in 9 months requires starting immediately. An extension of time to file is available (automatic, equal to any federal extension or 6 months, whichever is longer), but interest runs on any unpaid tax from the 9-month due date regardless of extension.
Step-up in basis still applies
Maine estate tax is separate from federal income tax on inherited assets. Heirs still receive a stepped-up cost basis equal to the asset's fair market value at the date of death, regardless of whether the estate owed Maine estate tax. Maine-taxed assets get the same favorable basis treatment as federally-taxed assets — only the income-tax rules on sales of inherited assets govern this, not the estate tax.
Maine income tax on inherited assets
Maine conforms to federal income tax treatment for most inherited assets. Maine has no separate inheritance income tax. An inherited IRA distributed to a Maine resident beneficiary will be subject to Maine income tax (Maine conforms to federal IRD rules), but that is ordinary income tax on distributions, not an inheritance tax on receipt.
Planning strategies for Maine estates
1. Credit shelter trust (most important for married couples)
As described above: the most powerful tool for Maine married couples is a credit shelter trust funded at the first death. Without it, the surviving spouse's estate faces Maine tax on the combined estate with only one $7.16M exemption. With it, the couple effectively shelters up to $14.32M from Maine estate tax.
2. Annual exclusion gifting
Each Maine resident can gift $19,000 per recipient per year (2026 federal annual exclusion) with no gift tax, no Maine lookback risk (if done more than 1 year before death), and no reduction in the federal lifetime exemption. A couple gifting to three adult children can transfer $114,000/year ($19K × 2 donors × 3 children) out of the estate with zero tax cost.
3. Irrevocable Life Insurance Trust (ILIT)
Life insurance owned by an ILIT is not part of the insured's taxable estate. For a Maine resident with a $10M estate and a $2M life insurance policy, moving the policy into an ILIT removes $2M from the Maine taxable estate — saving approximately $160,000 in Maine estate tax — and provides liquidity for estate taxes and beneficiary needs outside the estate.
4. Charitable strategies
Assets left to qualified charities are deducted from the Maine taxable estate. For Maine residents who are charitably inclined, a donor-advised fund, charitable remainder trust, or direct bequest reduces both federal and Maine estate tax exposure. A $1M charitable bequest reduces Maine estate tax by approximately $80,000–$120,000 depending on which bracket it displaces.
5. Qualified Personal Residence Trust (QPRT)
For owners of high-value Maine real estate — coastal property, historic homes, lake camps — a QPRT allows transferring the property out of the estate at a discounted gift tax value. The grantor retains the right to occupy the property for a term of years; at the end of that term, the property passes to the beneficiaries. The gift value is less than the full property value, reducing both federal lifetime exemption use and Maine estate tax exposure.
6. Domicile planning
Maine taxes the worldwide estate of Maine domiciliaries, plus Maine-situs property of non-residents. For high-net-worth individuals who spend significant time in Maine but are not legally domiciled there, confirming legal domicile in a non-estate-tax state (like New Hampshire, Florida, or Texas) can eliminate Maine estate tax on non-Maine property. However, domicile change requires genuine intent and physical presence change — not just paperwork — and the Maine Revenue Services may scrutinize large estates where the domicile is disputed.
Maine estate tax compared to other state estate taxes
| State | 2026 exemption | Top rate | Portability | Gift lookback |
|---|---|---|---|---|
| Maine | $7,160,000 | 12% | No | 1 year |
| Oregon | $1,000,000 | 16% | No | None |
| Rhode Island | $1,838,056 | 16% | No | None |
| Massachusetts | $2,000,000 | 16% | No | None |
| Minnesota | $3,000,000 | 16% | No | None |
| Illinois | $4,000,000 | 16% | No | None |
| Hawaii | $5,490,000 | 20% | Yes | None |
| New York | $7,350,000 | 16% | No | 3 years |
| Washington | $3,000,000–$5,000,000 | 20% | No | None |
| Connecticut | $15,000,000 | 12% | No | Gift tax applies |
| Maryland | $5,000,000 (estate tax) | 16% | No | None |
Maine's $7.16M exemption is the highest among the states that have no portability and impose a meaningful estate tax rate. It is second only to Connecticut ($15M, matching federal OBBBA) and New York ($7.35M) among all estate tax states. The inflation-indexing feature distinguishes Maine from most peers — the exemption will continue rising with CPI, slowly reducing the number of Maine estates subject to tax over time.
Get matched with a Maine estate planning specialist
If you're inheriting from a Maine estate — or planning your own — a fee-only advisor who handles estate planning and state estate tax can help you understand the filing requirements, planning options, and how Maine's rules interact with your full financial picture.
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Sources
- Maine Revenue Services, Maine Estate Tax for Deaths Occurring After 2012 — Guidance Document (TY2025), maine.gov/revenue. Confirmed $7,160,000 2026 exemption (inflation-indexed from $7M in 2025), 8%/10%/12% graduated rates, 1-year gift lookback. Maine MRS Estate Guidance (PDF)
- Maine Revenue Services, Estate Tax FAQ, maine.gov/revenue/faq/estate-tax. Confirms no portability between spouses for Maine estate tax purposes. Maine Estate Tax FAQ
- Maine Revenue Services, Instructions for Maine Estate Tax Return (Form 706ME). Confirms 9-month filing deadline, automatic extension equal to federal extension or 6 months (whichever longer), filing threshold at $7,000,000 gross estate. Form 706ME Instructions (PDF)
- ACTEC (American College of Trust and Estate Counsel), State Death Tax Chart, updated 2026. Cross-check for Maine rate schedule and 2026 exemption. ACTEC State Death Tax Chart
Maine estate tax values verified as of June 2026. The Maine exemption is inflation-indexed and may change in subsequent years. OBBBA federal exemption of $15M is permanent for 2026 and beyond unless Congress acts.