Maine Estate Tax Exemption 2026: Rates, Thresholds, and No Portability

Maine is one of 12 states (plus DC) that imposes its own estate tax, separate from the federal estate tax. Even if your estate falls well under the federal exemption, Maine's independent tax and its automatic real estate lien create planning obligations most residents don't know about until it's too late.

2026 Exemption and Tax Rates

For deaths occurring in 2026, the Maine estate tax exclusion is $7,160,000 per person — indexed annually for inflation (up from $6,800,000 in 2024 and $7,000,000 in 2025).

If your gross estate plus taxable gifts made within one year of death exceeds $7.16 million, the personal representative must file Form 706ME with Maine Revenue Services within 9 months of death.

The tax applies only to the amount exceeding the exemption:

For context: a $10 million estate owes $240,000 in Maine estate tax — 8% on the $2.84 million exceeding the exemption. A $15 million estate owes $780,000.

Maine Has No Inheritance Tax

This is the most common point of confusion. Maine has an estate tax (levied on the total estate before distribution) but no inheritance tax (levied on individual inheritances). Your heirs don't owe tax on what they receive. The estate pays any tax owed before assets are distributed.

The No-Portability Problem

Here's where Maine diverges critically from federal law. The federal estate tax allows "portability" — a surviving spouse can use their deceased spouse's unused exemption, effectively doubling their protection. Maine does not allow this.

If one spouse dies with a $3 million estate, their remaining $4.16 million of Maine exemption is permanently lost. The surviving spouse still has only their own $7.16 million exemption. For couples with combined estates approaching or exceeding $14 million, this means proper planning can save hundreds of thousands in state taxes.

The standard solution is a credit shelter trust (also called a bypass or A/B trust). The first spouse's will directs assets up to the exemption amount into an irrevocable trust that benefits the surviving spouse during their lifetime but doesn't count as part of the survivor's estate at their death. Both exemptions get used.

The Automatic Real Estate Lien

This catches nearly every Maine family off guard. Under 36 M.R.S. § 3851, an automatic estate tax lien attaches to every piece of real property owned by a Maine decedent at death — regardless of whether any tax is owed.

This lien clouds the title. You cannot sell, refinance, or transfer the property until it's formally released. The process:

1. The personal representative prepares Form 700-SOV (Statement of Value) detailing the estate's total value
2. Files it with Maine Revenue Services
3. If the estate is below the exemption, MRS issues a Certificate of Discharge of Estate Tax Lien
4. The Certificate must be recorded at the county Registry of Deeds to clear the title

Even for a $200,000 estate with a $150,000 home — nowhere near the $7.16 million threshold — this process is mandatory. Skip it and the property sits with a title defect that blocks any future sale.

Active Legislative Risk

Bill LD 1617 proposed slashing the Maine estate tax exclusion to $1,000,000 — which would have caught far more estates. While the bill didn't pass, it signals ongoing legislative interest in lowering the threshold. Estate plans built today should account for the possibility that the exemption could drop significantly.

The bill included a carve-out for family-owned agricultural, aquaculture, fishing, and forestry businesses (up to $3.8 million additional exclusion if inherited by a family member and kept in operation for 5+ years). This signals which industries lawmakers are trying to protect — and which they're not.

Planning Strategies

• For estates under $7.16M: no tax owed, but still file Form 700-SOV promptly if real estate is involved
• For married couples near the threshold: consider credit shelter trust planning to preserve both exemptions
• For estates with Maine real property: factor the lien release timeline into your administration plan — it adds weeks to months
• For all estates: keep an eye on legislative changes. The exemption amount is not constitutionally protected and can change with any legislative session.

The Maine Basic Estate Planning Kit includes the complete estate tax worksheet, lien release instructions, and Form 700-SOV filing guide for the current 2026 rules.

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