Maine LLC structure and cost: a high-tax New England state with its own estate tax that catches estates the federal one misses

Maine is a high-tax New England state, and the numbers matter for a real estate investor before anything else. The income tax tops out at 7.15%, the corporate rate reaches 8.93%, and the ongoing filing cost is among the higher ones in the country. But the detail that surprises investors is the estate tax. Maine imposes its own estate tax on estates above roughly $6.8 million, far below the federal exemption, so a Maine estate loaded with appreciated real property can owe Maine estate tax while owing nothing to the federal government. For an investor building a real estate estate in Maine, that is the planning point that outlasts the annual rates. Take the income tax first, then the estate tax.

The income tax and the ongoing cost

Start with the rates, which are high.

Maine’s top individual income tax rate is 7.15%, and its corporate rate reaches 8.93%.

A standard Maine LLC is a pass-through, so its income lands on the members’ returns across three brackets, from 5.8% up to 7.15% on income above roughly $61,600, a high top rate by national standards. An LLC that elects corporate treatment faces a graduated corporate rate reaching 8.93%. The sales tax is 5.5%, with groceries and most clothing exempt and an 8% rate on prepared food and lodging, and property taxes average around 1.09%. There is no series LLC, so an investor holding several properties forms a separate one for each, and each carries its own $85 annual report, covered on the filing page. So Maine is a relatively expensive state to earn and hold rental income in, both on the income tax and on the per-entity filing cost. The estate tax is where the long-run planning sits.

The estate tax below the federal line

Here is the Maine-specific point that a real estate investor should not miss.

Maine imposes its own estate tax above roughly $6.8 million, so a Maine estate can owe state estate tax while owing nothing federally.

The federal estate tax exempts estates well into the tens of millions, so most people never encounter it. Maine does not follow the federal exemption. It imposes its own estate tax on estates above roughly $6.8 million, at rates from 8% to 12%, which means an estate between that figure and the federal exemption pays Maine estate tax while paying no federal estate tax at all. For a real estate investor, this is easy to walk into, because appreciated property is illiquid and its value compounds quietly: a portfolio of Maine real estate that has grown over the years can push an estate over $6.8 million without the owner thinking of themselves as wealthy enough to have an estate-tax problem. The seam a Maine investor and their advisor should watch is that the state estate-tax threshold, not the federal one, is the line that matters here, and that real property values, appraised at death, are what carry an estate across it. Planning for it, through gifting, entity structures, or life insurance to fund the tax, is a Maine-specific consideration that the annual income-tax rate does not capture. Moving property into a Maine LLC carries a transfer tax of 0.44%, split between grantor and grantee, to confirm at the registry.

The bottom line

Maine’s top individual income tax rate is 7.15% and its corporate rate reaches 8.93%, high by national standards.

Maine has no series LLC, so multiple properties mean multiple separate LLCs, each with its own $85 annual report.

Maine imposes its own estate tax above roughly $6.8 million, far below the federal exemption.

A Maine estate loaded with appreciated real property can owe Maine estate tax while owing nothing federally, so the state threshold is the one to watch.

The transfer tax on moving property into an LLC is 0.44%, split between grantor and grantee.

What this page does not cover

This page is about where the entity lives and what it costs to hold and move. How creditors reach a member’s interest, the indexed homestead, and the missing entireties shield are on the protection page. The uniform act’s fiduciary floor and equal-shares default are on the governance page. The $175 formation fee and the $85 annual report due June 1 are on the filing page.

Last verified August 2026.