Maine Estate Planning 2026: The $7.16M Exemption, 8–12% Graduated Rates, and What Portland and Kennebunkport Families Must Know

Maine is one of only a dozen states and jurisdictions that still levies an estate tax — and while its $7,160,000 exemption is among the highest of any estate-tax state, the gap between that number and the $15M federal exemption (made permanent by OBBBA in July 2025) means tens of thousands of Maine families still face a significant state estate tax bill. Maine's 8–12% graduated rate structure, combined with no portability between spouses and a one-year gift lookback rule, creates planning obligations that many families miss entirely because they assume the federal exemption increase solved the problem. A Portland couple with a combined $15M estate who passes everything to the surviving spouse will expose their heirs to $760,800 in Maine estate tax — preventable with a bypass trust. And non-residents who own coastal property in Kennebunkport, Bar Harbor, or Boothbay Harbor face Maine estate tax on that real estate even if they live in Massachusetts, New York, or Connecticut. This guide explains Maine's estate tax mechanics, the no-portability bypass trust strategy, the 1-year gift lookback rule, and the trust and gifting strategies that reduce or eliminate Maine's exposure for HNW families.

How Maine estate tax works in 2026

Maine's estate tax is imposed under 36 M.R.S. §§ 4101–4118 on the Maine taxable estate of any decedent who was a Maine resident at death, or who owned Maine situs property (real estate or tangible personal property located in Maine) at death.¹

The Maine taxable estate is computed as:¹

1. Start with the federal taxable estate (gross estate minus allowable deductions — marital deduction, charitable deduction, debts, and expenses). Maine follows the federal taxable estate as its starting point, whether or not a federal return is required.
2. Add back state and local death taxes deducted on the federal return.
3. Add back taxable gifts made within one year of death. This is Maine's most commonly overlooked provision: large gifts made close to death — including trust fundings — are pulled back into the Maine taxable estate.
4. Subtract the $7,160,000 exemption. (2026 amount — adjusted annually for CPI.)
5. Apply the graduated rate schedule to the remaining taxable amount.

Maine estate tax rate schedule (2026)

Source: 36 M.R.S. § 4102; Maine Revenue Services Form 706ME instructions. Rates apply to the Maine taxable estate above the $7,160,000 exemption.

Estimated Maine estate tax by estate size

Maine estate tax = graduated rates on (gross estate minus deductions minus $7,160,000 exemption). Assumes no charitable or marital deduction. Single filer or second-to-die analysis. Source: 36 M.R.S. § 4102 and Form 706ME instructions.

The no-portability trap — why Maine married couples need a bypass trust

Maine does not offer portability. When the first spouse dies, that spouse's $7,160,000 Maine estate tax exemption must be used at that death or it is permanently forfeited. There is no Form 706ME election that preserves the first spouse's unused exemption — unlike the federal estate tax, where a surviving spouse can elect portability on Form 706 within 5 years of death (Rev. Proc. 2022-32). Maine's legislature has not adopted a portability provision.²

The bypass trust solution

A bypass trust (also called a credit shelter trust or AB trust) is the essential Maine estate planning tool for married couples with estates above $7.16M. At the first spouse's death, assets equal to the $7,160,000 Maine exemption are funded into the bypass trust rather than passing outright to the surviving spouse. The trust assets are permanently outside the survivor's taxable estate. At the second spouse's death, the bypass trust assets pass to heirs Maine-estate-tax-free.

$15M combined estate. First spouse funds $7.16M bypass trust; remaining $7.84M passes to surviving spouse. At survivor's death, $7.84M minus $7.16M exemption = $680K taxable at 8% = $54,400 ME estate tax. Without bypass: $15M minus $7.16M = $7.84M taxable; ME tax = $240K + $300K + $220.8K = $760,800. Savings: $706,400. Source: 36 M.R.S. § 4102.

Asset equalization: the essential first step

A bypass trust only works if the first spouse to die has sufficient assets in their own name to fund the trust. Maine families frequently hold all significant assets jointly (joint tenancy with right of survivorship on real estate, joint brokerage accounts) or in one spouse's name. If the first spouse to die has no individually titled assets, there is nothing to fund the bypass trust even if the trust document is perfectly drafted — the exemption is wasted. Retitling assets into each spouse's separate name ahead of time — while maintaining appropriate access and beneficiary designations — is a critical and often overlooked planning step.

OBBBA formula clause warning

Many Maine estate plans drafted before 2025 used formula clauses that fund the bypass trust with the "applicable exclusion amount" — the federal lifetime exemption at the time of death. After OBBBA permanently set the federal exemption at $15M per person, these formula clauses now direct $15M into the bypass trust — potentially the entire estate — disinheriting the surviving spouse and triggering unintended tax consequences. Maine estate plans drafted before mid-2025 should be reviewed immediately by a trust-and-estates attorney to confirm that formula clauses are calibrated to the Maine exemption ($7,160,000), not the federal amount.

Maine's 1-year gift add-back: the rule most advisors miss

Maine's estate tax statute adds taxable gifts made within one year of death back to the Maine taxable estate for purposes of computing Maine estate tax.¹ If you fund a SLAT, make a large outright gift to adult children, or transfer significant assets to an irrevocable dynasty trust within 12 months of dying, those transfers return to your Maine taxable estate as if the gift never occurred.

What the 1-year add-back means for planning

• Annual exclusion gifts are completely exempt from the add-back. Gifts of $19,000 per recipient per year (or $38,000 with gift splitting) do not create "adjusted taxable gifts" for federal purposes and are not captured by Maine's 1-year rule. You can make annual exclusion gifts to your children, grandchildren, and other heirs regardless of health status.
• Direct tuition and medical payments (IRC §2503(e)) are also exempt. Unlimited payments made directly to educational institutions or medical providers are completely outside the gift tax system and not subject to any lookback.
• Large trust fundings must be timed carefully. A SLAT or IDGT funded 3 years before death permanently escapes the Maine estate. The same trust funded 6 months before death is fully pulled back in. The practical implication: don't wait until you're diagnosed to execute major trust strategies.
• Maine's 1-year rule is shorter than Vermont's. Vermont adds back gifts made within 2 years of death. Maine's rule is less restrictive, but still requires that major gifting programs be initiated well in advance of any health event.

No Maine gift tax: the annual gifting opportunity

Maine has no state gift tax. Lifetime gifts made by Maine residents are not subject to Maine gift tax and, if made more than one year before death, permanently escape the Maine taxable estate at no state tax cost. There is no Maine tracking of lifetime gifts, no separate Maine lifetime exemption, and no Maine gift tax return to file.⁴

Annual exclusion gifting

• $19,000 per recipient per year (2026 federal annual exclusion).³ Zero federal gift tax, no reduction in federal $15M lifetime exemption, and no Maine gift tax. Maine estate tax savings: every $19,000 annual exclusion gift permanently removes $1,520–$2,280 in Maine estate tax exposure (8–12% × $19,000).
• $38,000 per recipient with gift splitting (IRC §2513) — married couples treat each gift as made equally by both spouses on Form 709.
• Multiple recipients, significant scale: A couple with three adult children and four grandchildren can permanently remove $38,000 × 7 = $266,000 per year from the Maine estate — with no ME gift tax and no lookback if maintained for more than 1 year before death.
• Compound math over 10 years: $266,000/year × 10 years = $2.66M removed from the estate, plus all appreciation on those gifted assets accumulates outside the Maine estate permanently.

529 superfunding

A Maine couple can front-load five years of annual exclusion gifts into 529 education accounts: $95,000 per beneficiary per grandparent pair ($190,000 with gift splitting) in 2026. No Maine gift tax. With four grandchildren, that is $760,000 removed from the Maine estate in a single year — growing tax-free for education costs and eligible for Roth IRA rollover if unused (SECURE 2.0 §126, $35,000 lifetime, 15-year account history required).

Direct tuition and medical payments (IRC §2503(e))

Payments made directly to educational institutions for tuition, or directly to medical providers for medical care, are excluded from the gift tax system entirely — unlimited amounts, no return required, no reduction in annual or lifetime exclusions, and not subject to Maine's 1-year add-back. A Maine grandparent paying $60,000/year directly to a university eliminates $600,000 from their Maine estate over 10 years at zero Maine or federal gift tax cost.

Non-resident property: the Maine coastal home trap

Maine estate tax applies to Maine situs property owned by non-residents at death. If you live in Massachusetts, New York, New Jersey, or Connecticut but own a summer cottage in Kennebunkport, a Bar Harbor home, a Boothbay Harbor property, or an Acadia-area camp, that real estate is subject to Maine estate tax at your death — in addition to any estate tax imposed by your state of domicile.²

How non-resident Maine estate tax is computed

Maine taxes the non-resident's Maine situs property by applying the full Maine estate tax computation and then using an apportionment ratio (Maine situs property ÷ total gross estate) to determine the Maine estate tax attributable to that property. The $7.16M exemption is also apportioned.

Example: A Massachusetts resident dies with a $12M gross estate including a Kennebunkport cottage now worth $1.5M. Maine estate tax (simplified):

• ME situs property: $1,500,000
• Apportionment ratio: $1,500,000 ÷ $12,000,000 = 12.5%
• Maine allocates $895,000 of the $7.16M exemption to the ME portion (12.5% × $7,160,000)
• ME taxable: $1,500,000 − $895,000 = $605,000 × 8% = $48,400 Maine estate tax

The Massachusetts resident owes Maine estate tax on the cottage on top of whatever Massachusetts estate tax applies to the full estate. Holding the cottage through a Maine LLC converts Maine situs real property to a membership interest — an intangible personal property interest that is generally not Maine situs for a non-resident, potentially eliminating Maine estate tax on that asset. This strategy requires careful structuring to avoid IRC §2036 (retained interest) challenges and adequate appraisal for valuation discounts.

Trust strategies for $7M+ Maine families

Spousal Lifetime Access Trust (SLAT)

A SLAT funded by one spouse for the benefit of the other spouse and their children permanently removes the funded assets from the grantor's Maine estate. For Maine families — where no state gift tax makes large transfers especially efficient — a $5M SLAT saves $400,000 in Maine estate tax permanently, plus all future appreciation on those $5M compounds outside both spouses' taxable estates. Timing is critical: fund the SLAT more than 12 months before any health event to stay outside the 1-year add-back window. The dual-SLAT strategy — each spouse funds a separate SLAT for the other spouse — can move up to $30M (2 × $15M federal exemption) outside both federal and Maine estates, but requires careful differentiation to avoid the reciprocal trust doctrine (United States v. Grace, 395 U.S. 316). SLAT guide →

Grantor Retained Annuity Trust (GRAT)

A zeroed-out GRAT transfers future appreciation above the §7520 hurdle rate to heirs with minimal taxable gift. Any asset growth above the hurdle rate passes to remainder beneficiaries free of both Maine estate tax and federal estate tax. GRATs are ideal for volatile assets expected to outperform the hurdle rate — pre-IPO equity, closely-held business interests, appreciated investment real estate. Maine has no gift tax to complicate the GRAT structure. Caution: fund GRATs well before the 1-year add-back window — if the grantor dies during the GRAT term, the full trust value is included in the Maine estate under IRC §2036. GRAT calculator →

Intentionally Defective Grantor Trust (IDGT) installment sale

An IDGT installment sale allows a Maine business owner or real estate investor to sell appreciated assets to the trust in exchange for a promissory note at the applicable federal rate (AFR — the minimum IRS-approved rate). The transaction is income-tax-free because it's a grantor-trust transaction (Rev. Rul. 85-13). The full asset value is permanently removed from the Maine estate. Any appreciation above the AFR accumulates in the trust for heirs. For a Maine family with a $7M closely-held business, an IDGT installment sale moves the entire business out of the Maine estate, saving up to $540,000+ in Maine estate tax plus eliminating estate tax on all future appreciation. IDGT guide and calculator →

Irrevocable Life Insurance Trust (ILIT)

Life insurance proceeds are included in the Maine estate under IRC §2042 if the insured held incidents of ownership at death. An ILIT holds the policy outside the estate: proceeds are paid to the trust — not to the estate — and are excluded from the Maine taxable estate. For a Maine family with a $2M policy, an ILIT saves $160,000 in Maine estate tax (8% × $2M) to potentially $240,000 (12% × $2M) depending on the estate size. Annual Crummey notices ($19,000 per beneficiary) allow premium funding via annual exclusion gifts — no Maine gift tax and not subject to the 1-year add-back (since annual exclusion gifts are not adjusted taxable gifts). ILIT guide →

Dynasty trust in a favorable state

Maine enforces the Rule Against Perpetuities, generally limiting trust duration to a life in being plus 21 years — in practice, 90–100 years. Maine is not a dynasty trust state. However, Maine families can establish dynasty trusts in states that have abolished the RAP (South Dakota, Nevada, Delaware, Wyoming, Alaska) and fund those trusts with Maine-sourced assets. A properly structured South Dakota dynasty trust, funded with $7M by a Maine resident more than 1 year before death, permanently escapes Maine estate tax and eliminates GST tax at every subsequent generation (up to the $15M GST exemption per person). Dynasty trust guide →

Portland case study: the Winslow family

Situation: Richard (66) and Susan (63) Winslow live in Portland's West End neighborhood. Their combined estate: Portland home $1.8M, Kennebunkport summer cottage $1.4M, investment portfolio $5.5M, retirement accounts (IRAs + 401k) $4.3M, term life insurance $2M. Total gross estate: $15M.

Without planning: At Richard's death, everything passes to Susan via the marital deduction — $0 Maine estate tax at the first death. Richard's $7.16M Maine exemption is permanently lost. At Susan's death, 10 years later, the estate has grown to approximately $17M (investment growth minus withdrawals):

• Maine estate tax on $17M: taxable = $17M − $7.16M = $9.84M; 8% on $3M = $240K + 10% on $3M = $300K + 12% on $3.84M = $460.8K = $1,000,800 Maine estate tax
• Federal estate tax: $0 (below $15M per person; Richard's DSUE was elected at federal level)
• The IRAs ($4.3M + growth) pass via beneficiary designation outside the taxable estate — but heirs owe income tax on every dollar withdrawn over the 10-year distribution period (SECURE 2.0 / T.D. 10001)

With bypass trust, ILIT, and annual gifting:

• At Richard's death: $7.16M funded into bypass trust (Kennebunkport cottage $1.4M + investment portfolio $5.76M). Remaining estate — Portland home $1.8M, balance of portfolio, IRAs (non-retitleable, pass to Susan via beneficiary designation) — passes to Susan. Maine estate tax at first death: $0.
• ILIT established 5 years ago holds the $2M term policy outside both estates. Crummey notices funded from annual exclusion — no Maine estate tax and no 1-year add-back on annual exclusion gifts.
• Annual gifting to three adult children: $38,000/year × 3 = $114,000/year permanently outside Susan's estate. Over 10 years: $1.14M removed.
• At Susan's death (estate: $7.84M non-bypass portion, grown to ~$9M minus $1.14M in gifts ≈ $7.86M; IRAs pass via beneficiary designation): taxable Maine estate ≈ $7.86M − $7.16M = $700K × 8% = $56,000.
• Total Maine estate tax across both deaths: $56,000 vs. $1,000,800 without planning. Savings of approximately $945,000.

Maine vs. New Hampshire vs. Massachusetts: a comparison

Maine residents who maintain a second home in New Hampshire — or who consider retiring to NH — should note that establishing New Hampshire domicile eliminates Maine estate tax on personal property and non-Maine real estate. Domicile requires genuine relocation: NH driver's license, voter registration, professional registrations, and documentation of NH as the primary state of return. Maine real estate owned by a NH domiciliary remains subject to Maine estate tax on an apportioned basis.

Massachusetts families who own Maine property should evaluate whether holding that property through a Maine LLC eliminates Maine estate tax on the property. Maine families with children in Massachusetts should also plan for the MA estate tax separately — at a $2M exemption and rates up to 16%, MA's exposure is often larger than Maine's for families with estates in the $5M–$10M range. Massachusetts estate tax guide →

Seven costly Maine estate planning mistakes

1. Passing everything to the surviving spouse without a bypass trust. The unlimited marital deduction eliminates Maine estate tax at the first death — but permanently wastes the first spouse's $7.16M Maine exemption. At the second death with a single exemption against the full combined estate, the tax bill can exceed $700,000 on a $15M estate. A bypass trust uses both exemptions at a cost of $5,000–$10,000 in legal fees.
2. Holding all assets jointly. Joint tenancy with right of survivorship automatically passes property to the surviving spouse outside the probate estate — but also prevents funding the bypass trust at the first death. Maine families who own everything jointly need to retitle assets into separate names to make the bypass trust strategy operational.
3. Assuming OBBBA eliminated the Maine estate tax problem. OBBBA (July 2025) permanently raised the federal estate tax exemption to $15M per person — but had zero effect on Maine's $7.16M exemption. Maine families who reduced their planning after the federal change may still face six-figure Maine estate tax bills. Maine's estate tax is entirely independent of the federal amount.
4. Funding large trusts within 1 year of death. Maine's 1-year gift add-back rule means a SLAT or large irrevocable trust funded in the final year of life returns to the Maine taxable estate. Unlike annual exclusion gifts (which escape the add-back regardless of timing), large trust fundings must be made more than 12 months before death to permanently escape the Maine estate.
5. Ignoring Maine estate tax on the coastal summer property (non-residents). Massachusetts, New York, Connecticut, and New Jersey residents who own Maine vacation property overlook Maine's situs rule. Holding the property through a Maine LLC may convert the real estate interest to intangible personal property — potentially outside Maine's estate tax for non-resident owners — but requires proper structuring and legal advice.
6. Naming the estate as IRA beneficiary. IRAs and retirement accounts pass via beneficiary designation outside the estate if a living beneficiary is named — eliminating Maine estate tax exposure on those funds. Naming the estate as beneficiary (or failing to update a beneficiary designation after a death or divorce) pulls the IRA into the Maine taxable estate and subjects it to Maine estate tax before distribution. Heirs then also owe ordinary income tax on distributions (IRD under IRC §691) — a double-tax trap.
7. Stale formula clauses after OBBBA. Estate plans drafted before July 2025 may use formula clauses that fund the bypass trust with the "applicable exclusion amount" — the federal lifetime exemption at death. With the federal exemption now permanently at $15M, these clauses may divert the entire estate into the bypass trust, disinheriting the surviving spouse. Maine estate plans drafted before mid-2025 should be reviewed by a trust attorney to confirm the bypass trust formula is pegged to the Maine exemption ($7,160,000), not the federal amount.

Working with a fee-only advisor on Maine estate planning

Maine estate tax planning requires three professionals working in coordination: a financial advisor to model estate growth, project tax exposure, and quantify the economics of bypass trusts, SLATs, GRATs, and annual gifting strategies; a trust-and-estates attorney licensed in Maine to draft the bypass trust, SLAT, ILIT, and related documents; and a CPA to handle Form 709 gift tax returns and Form 706ME at death.

Fee-only advisors — those who charge a flat fee or percentage of assets without commissions — have no product incentive in the planning process. For Maine families where the bypass trust math is straightforward ($706,400 in savings on a $15M estate against a $5,000–$10,000 drafting cost), objective modeling is essential. Fee-only advisors model the tradeoffs — bypass trust vs. portability-reliance (which Maine doesn't offer anyway), SLAT timing vs. 1-year add-back risk, ILIT vs. self-insuring — without an interest in which financial product you purchase.