What Is the Stepped-Up Basis on an Inherited House in Massachusetts? (2026 Guide for Quincy Heirs)
Last updated: October 28, 2026
FRESHNESS: rate/stat-dependent (federal exemption, capital gains brackets, and the Massachusetts estate tax threshold move; re-confirm at each quarterly refresh)
PROBATE & ESTATE
What Is the Stepped-Up Basis on an Inherited House in Massachusetts? (2026 Guide for Quincy Heirs)
October 28, 2026 | By Krista Recker
When you inherit a house, your tax basis generally resets to the home's fair market value on the date your parent died, not what they paid for it. That reset is called the stepped-up basis, and it usually wipes out the capital gain your parent built up over decades. In this hypothetical, your parent bought a Quincy house for $90,000 in 1985, it was worth $700,000 on the date of death, and you sell it for $715,000. Your gain before selling expenses is $15,000, not $625,000. The date-of-death value is the number that matters most, and it is easy to document if you get it done early.
I am a real estate salesperson, not a tax advisor or attorney, so use this as the framework and confirm the details with a CPA and a Massachusetts probate attorney.
Who this applies to
This is written for you if any of the following is true:
- You inherited a Quincy or other Massachusetts house, or expect to, and plan to sell it.
- You are a personal representative trying to figure out what the heirs will owe after a sale.
- Your parent is alive and thinking about adding you to the deed, and you want to know what that does to your taxes.
- Siblings are deciding whether one of them should keep the house or whether to sell and split the proceeds.
- You inherited a house years ago and never got a date-of-death valuation.
What is a stepped-up basis on an inherited house?
A stepped-up basis means the house's cost basis for tax purposes becomes its fair market value at the date of the owner's death. Under Internal Revenue Code section 1014, property you receive from a decedent generally takes that value as its basis. Basis is the number subtracted from your sale price to calculate gain. A higher basis means a smaller gain, and often no tax at all.
Your parent's original purchase price and any improvements they made over the years stop mattering for you. The clock restarts at the date of death. Under section 1223(9), an inherited house whose basis is set by section 1014 gets long-term capital gain treatment even if you sell it within a year of the death, so even a sale a few months after the death is taxed at long-term rates, not short-term rates.
How much capital gains tax will I owe if I sell an inherited house?
You owe tax only on the growth between the date-of-death value and your sale price, minus your selling costs. Selling expenses such as the agent commission, deed excise tax, and attorney fees reduce the gain further. Here is a worked example using the numbers above.
| Hypothetical scenario | Sale price | Assumed basis | Gain before selling expenses | Illustrative Massachusetts tax at 5% |
|---|---|---|---|---|
| Heir inherits a house valued at $700,000 on the date of death (stepped-up basis) | $715,000 | $700,000 | $15,000 | $750 |
| Same house given to the heir before death, with the parent's adjusted basis assumed to be exactly $90,000 (carryover basis) | $715,000 | $90,000 | $625,000 | $31,250 |
This illustration ignores selling expenses, improvements, depreciation, exclusions, capital loss offsets, federal tax, and the Massachusetts surtax. The numbers are hypothetical, not a Quincy valuation or market statistic.
The difference is the point. At the same $715,000 sale price, the inheriting heir faces about $750 of illustrative Massachusetts tax on the gain, while the heir who received the house as a lifetime gift starts from the parent's carryover basis and faces a gain more than 40 times larger. Federal tax stacks on top of both.
Federal long-term capital gains are taxed at 0%, 15%, or 20% depending on taxable income, and a 3.8% net investment income tax can apply when modified adjusted gross income is above $200,000 for single filers, $250,000 for married couples filing jointly, or $125,000 for married filing separately. Massachusetts generally taxes long-term gains from a house sale at 5%. For tax year 2026, an additional 4% surtax applies only to the portion of Massachusetts taxable income above $1,107,750, which is not a concern for most heirs of a typical Quincy home. The 2026 income tax thresholds apply to a 2026 sale, while estate tax rules depend on the date of death.
Figures checked against Internal Revenue Code sections 1014 and 1223, IRS Topic 559 on the net investment income tax, the Mass.gov 4% surtax page, and Kiplinger's 2026 estate tax exemption summary in October 2026.
How do I find the date-of-death value of a house?
A written retrospective appraisal by a Massachusetts licensed or certified appraiser experienced in estate valuations helps document the house's fair market value as of the exact date of death. A broker price opinion or comparative market analysis from a local agent is a useful starting point, but an appraisal carries more weight if the IRS or Massachusetts ever asks. If an estate tax return was filed, coordinate with the estate's tax preparer so the values agree. Here is the order I recommend:
- Order the date-of-death appraisal as soon as the estate is opened, while comparable sales from that period are easy to pull and the condition of the house is fresh.
- Tell the appraiser the exact date and ask for a written report that states the effective date.
- Keep the report with the estate records, along with photos of the home's condition at the time.
- If a personal representative is filing an estate tax return, make sure the same value is used there. The values should agree.
- Give a copy to your CPA before you file your tax return for the year of the sale.
Appraisal fees vary by property, so get a quote for your specific house. The fee is usually small next to the tax the documentation can protect.
Does the stepped-up basis apply if the house was owned jointly?
Only partly, in many cases. When spouses own property together, the surviving spouse generally gets a stepped-up basis on the half the decedent owned, while the survivor's own half keeps its original basis. Massachusetts is not a community property state, so the full step-up on both halves that some other states allow generally does not apply. If the house was owned with a child or sibling, only the decedent's share steps up. Ask your CPA to compute it from the deed.
A house held in the deceased owner's revocable living trust generally qualifies for the step-up. For an irrevocable trust, it depends on the trust's terms and whether the house is included in the decedent's gross estate for federal estate tax purposes. IRS Revenue Ruling 2023-2 confirms that assets in an irrevocable grantor trust that are not included in the deceased grantor's gross estate generally do not get the step-up. Bring the trust document to your attorney.
Does a stepped-up basis apply if my parent gave me the house before they died?
No, and this is the most expensive mistake families make. Giving a house, or an ownership share, to a child during life generally carries over the parent's adjusted basis for calculating the child's gain on the gifted interest (section 1015), so that share keeps the parent's old, low purchase price. Adding a child to the deed to avoid probate, a common move, can change how much of the house qualifies for a step-up at death, but the result depends on the deed and the estate tax rules.
The trade-off is real. Transfers for less than fair market value can trigger a penalty period under MassHealth's 60 month look-back if long-term care is needed, and a deed change may also affect property tax exemptions and control of the home. Each of those needs its own review. If your parent is considering a deed change, talk to an elder law or estate planning attorney first. I cover the planning side in my post on estate planning and real estate in Massachusetts.
Can I use the home sale exclusion on an inherited house?
Only if you qualify on your own. The federal exclusion of up to $250,000 of gain per person ($500,000 for joint filers) under section 121 requires that you owned and lived in the house as your main home for at least 2 of the 5 years before the sale. Heirs who never lived there do not qualify, which is exactly why the stepped-up basis matters so much for them.
An unmarried surviving spouse may qualify for an exclusion of up to $500,000 when selling within 2 years of the spouse's death, but only if the surviving spouse has not remarried, the usual ownership and residence tests are met (the late spouse's periods can count), and neither spouse used the exclusion on another home sale in the prior 2 years. Heirs who never lived there generally do not qualify. Ask your CPA about the exact conditions.
What if the house sells for more or less than the date-of-death value?
If you sell for more, you pay tax on the difference above the stepped-up basis, minus selling costs. If the house sells for less, you may have a loss. A loss on a house the heir used personally generally is not deductible. Property genuinely held for investment or rental can be treated differently, but it is not automatic, and special loss rules apply if a personal-use house is later converted to a rental, so ask your CPA. This is one more reason to list a Quincy inherited house reasonably soon rather than waiting through a market that could move either way, since every month adds carrying costs without adding to your basis.
Will Massachusetts estate tax affect the stepped-up basis?
The two taxes are separate. The Massachusetts estate tax applies to a decedent's taxable estate above $2,000,000, with a credit that removes the old cliff, for decedents dying on or after January 1, 2023. Most Quincy families with one house and modest other assets fall below it. The federal estate tax exemption for people who die in 2026 is $15 million per person, so very few estates owe federal estate tax. Whether or not any estate tax is owed, the stepped-up basis still applies to the inherited house.
If an estate must file a federal estate tax return (Form 706), the executor must file Form 8971 and give each beneficiary a Schedule A showing the estate tax value of what they received. For smaller estates that do not file Form 706, the date-of-death appraisal is your documentation.
What should I do first if I inherited a Quincy house?
Here is the short sequence I give families.
- Get the date of death from the death certificate and write it at the top of your file.
- Order a date-of-death appraisal from a licensed Massachusetts appraiser.
- Collect the deed and any trust documents so your CPA can see how title was held.
- Keep records of closing costs, repairs made to prepare the house for sale, and carrying costs during the estate.
- Talk to a CPA before you sign a purchase and sale agreement, not after, so the tax return matches the closing statement.
- Ask your probate attorney whether the personal representative has the authority to sign the deed, and what the title company will need.
The Bottom Line
For most heirs, selling an inherited Quincy house triggers little or no capital gains tax, because the basis resets to the value on the date of death. The things that can undo that benefit are a lifetime gift before death, a missing or weak appraisal, and waiting through a market swing. Get the date-of-death value in writing early, keep your records together, and let your CPA run the numbers before you sign.