Do I have to pay capital gains tax when I sell my house in Massachusetts?

by The Pezzano Group

Short answer: Often, no — or much less than people fear. If you've owned and lived in the home for at least two of the last five years, federal law lets you exclude up to $250,000 of gain ($500,000 for a married couple filing jointly), and Massachusetts follows the same exclusion. On any gain above that, Massachusetts taxes long-term gains at 5%. The details decide the bill, so here's how it actually works.

The exclusion does most of the work

The rule is Section 121 of the federal tax code, and it's simpler than its reputation. Sell your main home, and if you owned it and used it as your main home for at least two years out of the five years before the sale, you can exclude:

$250,000 of gain if you file singly
$500,000 of gain if you're married filing jointly

"Gain" is not the sale price. It's the sale price minus what you paid for the house, minus the cost of major improvements over the years (the addition, the new roof — your "basis"), minus selling costs. A couple who bought for $350,000, put $100,000 into it over the years, and sell for $850,000 has a gain of about $400,000 before selling costs — fully inside the $500,000 exclusion. Federal tax: $0. Massachusetts conforms to the federal exclusion, so the state tax on that gain is also $0.

Long-term homeowners are often surprised by this. Decades of appreciation sound like a tax problem; for most married couples selling a primary home, the exclusion quietly handles it.

The Massachusetts specifics

For gain that does exceed the exclusion — or for a home that doesn't qualify (a rental, a second home, a house held less than two years) — Massachusetts taxes capital gains at:

5% for long-term gains (held more than one year)
8.5% for short-term gains (held one year or less)

On top of that, very high earners should know about the Fair Share surtax: an additional 4% on Massachusetts income above $1,107,750 (the 2026 threshold). It applies to the income above the line, not your whole income — but a very large home-sale gain in a single year can push someone over it, which is one reason the timing of a sale is worth a conversation with a CPA before listing, not after closing.

The inherited-house exception: step-up in basis

Inherited property plays by a different and much kinder rule. When you inherit a house, your basis is generally "stepped up" to the home's value on the date of the owner's death. So if your parents bought in 1985 for $120,000 and the house was worth $700,000 when you inherited it, your basis is $700,000 — sell it for $710,000 and your taxable gain is roughly $10,000, not $590,000. This is why getting a solid date-of-death valuation matters, and why inherited houses are usually sold with far less tax friction than families expect.

A note on the proposal you may have heard about

There's a bill in Congress — the More Homes on the Market Act — that would double the exclusion to $500,000 / $1,000,000 and index it for inflation. It has been introduced, and that's all: as of this writing it is proposed, not law. Plan around the rules that exist, and treat anything else as a pleasant surprise if it ever arrives.

Frequently asked questions

I sold in under two years. Do I get any exclusion?

Possibly a partial one — if the sale was due to a job change, health reasons, or certain unforeseen circumstances, the IRS allows a prorated exclusion. This is squarely a CPA question; the prorated math is fact-specific.

What if my gain is bigger than the exclusion?

Only the excess is taxed — federally at capital gains rates, and in Massachusetts at 5% for a long-term gain. The exclusion isn't a cliff; going over it doesn't expose the whole gain.

Does the tax work differently for a rental property?

Yes — rentals don't get the Section 121 exclusion while they're rentals, depreciation you claimed gets "recaptured" at sale, and a 1031 exchange may let you defer the whole thing. Different rules, different planning — and worth its own conversation before you list.

Want to know what your home is worth before you run tax numbers? Start with a real valuation — pezzanogroup.com — and bring the figure to your CPA. Questions about the selling side: Dan Pezzano, 617-417-9108 · Pete Pezzano, 617-913-2730.

This is general information about Massachusetts and federal tax rules, not tax or legal advice for your situation. Tax law changes; confirm your numbers with a CPA.

Published by The Pezzano Group | Powered by Rise Signature Homes · Licensed Massachusetts real estate team

Figures: IRS §121 and §1014; Massachusetts DOR 2026 rates and Fair Share threshold — verified October 2026.