Capital Gains Tax on Selling Your Family Home in 2026
The home sale exclusion has sat at $250,000 and $500,000 since 1997. Here is how long-time owners can tell whether they will owe, and what to gather before the sale.
In this article 7 sections
Most people selling a family home owe no capital gains tax. If you owned and lived in the house for at least two of the last five years, you can exclude up to $250,000 of profit, or $500,000 for a married couple filing jointly. Long-time owners in high-cost areas can exceed those limits, so run the numbers before you list.
I have sat at a lot of kitchen tables with people selling the house they raised their children in. The tax question usually comes up late, after the price is agreed. That is the wrong order. A rough gain estimate belongs at the start, next to the valuation, because it can change when you sell and how you price.
This explainer is for homeowners in their fifties and sixties who bought decades ago and are now selling up. It covers how the exclusion works, how to estimate your gain, which records matter, and what Congress is debating in 2026. Figures are federal and current as of October 2026. This is general information, not tax or legal advice, so check your own situation with a tax professional.
How the Capital Gains Tax Exclusion Works
The Internal Revenue Service (IRS) lets you leave a large slice of home sale profit out of your income. According to the IRS summary of the sale of your home rules, you can exclude up to $250,000 of gain, or $500,000 on a joint return. Anything above that is taxed as a capital gain.
Two tests decide whether you qualify. You must have owned the home for at least 24 months of the last five years. You must also have lived in it as your main home for at least 24 months of the same five years. The two periods do not have to overlap.
There is also a timing limit. You cannot use the exclusion if you already used it on another home sale in the two years before this one. That matters for couples who sell a second property first and the family home soon after.
Will You Owe Tax on Your Home Sale?
You will owe federal tax only if your gain is larger than your exclusion. Your gain is not the sale price minus what you paid. It is the amount you realize after selling costs, minus your adjusted basis. Many owners who bought in the 1980s or 1990s are surprised in both directions once they work it out properly.
Here is an illustrative example, not a real client. A couple bought in 1994 for $150,000 and spent $60,000 on documented improvements. They sell for $780,000 and pay $40,000 in commission and closing costs.
| Step | Married, joint return | Single seller |
|---|---|---|
| Amount realized ($780,000 minus $40,000) | $740,000 | $740,000 |
| Adjusted basis ($150,000 plus $60,000) | $210,000 | $210,000 |
| Gain | $530,000 | $530,000 |
| Exclusion | $500,000 | $250,000 |
| Taxable gain | $30,000 | $280,000 |
The same house produces a modest bill for a couple and a large one for a single owner. That gap is why I always ask whether one spouse has died or the couple is divorcing. It changes the planning.
Raising Your Basis With Home Improvements
Your adjusted basis starts with what you paid and grows with improvements. IRS Publication 523 describes improvements as work that adds value, prolongs the home’s useful life or adapts it to new uses. The cost of additions and improvements is added to your basis.
Repairs and upkeep do not count. Repainting a bedroom or fixing a leaking tap keeps the house as it was. A new roof, an added bathroom, central air or a rebuilt kitchen changes it. Over thirty years, those projects can add tens of thousands to your basis.
The catch is proof. In my experience, long-time owners rarely have every receipt, but they usually have more than they think. Look for these records first:
- Building permits from your city or county, which often list the project and date.
- Contractor invoices and cancelled checks in old bank statements.
- Home equity loan papers that describe what the money paid for.
- Insurance policy updates after a major renovation.
Selling costs help too. Publication 523 says sales commissions reduce the amount you realize. So do many closing costs you pay as the seller. Keep your settlement statement with your tax papers. If paperwork is your weak spot, our guides to property paperwork walk through what to keep and where.
Building a basis file in an afternoon
You do not need a perfect archive. You need a reasonable, honest record. This is the order I suggest to sellers who are starting from a box of loose papers:
- Find the closing statement from when you bought. It shows your purchase price, which is the starting point for your basis.
- Walk the house room by room and write down every major project you remember, with a rough year.
- Match each project to a permit, invoice, loan record or bank statement.
- Put a dollar figure next to each matched project and add them up.
- Keep a short note on anything you could not prove, for your tax adviser to judge.
Done this way, most people finish in a few hours. It also makes the agent meeting easier, because you can talk about the roof and the kitchen with dates rather than guesses.
Special Cases Long-Time Owners Run Into
A few situations come up again and again with sellers over fifty. Each one can change the numbers, sometimes a lot.
Selling after a spouse dies
Publication 523 lets a surviving spouse who has not remarried take the higher $500,000 exclusion in some cases. One condition is selling within two years of the spouse’s death. Grief does not run on a tax calendar, but it is worth knowing that clock exists. Separate basis rules can also apply to the share that passed at death.
Selling an inherited house
An inherited home usually gets a fresh starting basis. Publication 523 sets it at the fair market value on the date of death, or a later alternate valuation date chosen by the estate. A parent’s home bought for $40,000 may carry a much higher basis in your hands. An appraisal near the date of death is worth having.
Moving early for health or work
If you sell before meeting the two-year tests, you may still get a partial exclusion. The IRS allows this when the main reason is a work move of 50 miles or more, a health reason, or certain unforeseeable events.
Selling at a loss
A loss on your main home is not deductible. Publication 523 is plain about that. It does not happen often to long-time owners, but it can in a falling local market.
What Congress Is Debating in 2026
The limits have not moved since 1997, and pressure to change them has grown. The National Association of Realtors (NAR) says the median home price in 1997 was $129,000. The trade group is pushing hard for an update, so read its framing with that in mind.
The leading bill is the More Homes on the Market Act. As of an August 2026 report from Real Estate News on the bill’s growing support, it had 151 House cosponsors and 23 in the Senate. It would double the limits to $500,000 and $1 million and adjust them for inflation each year.
Other proposals go further. In January 2026, Representative Scott Fitzgerald announced the Middle Class Home Tax Elimination Act, which would remove capital gains tax on the sale of a primary residence. None of these bills has become law.
My honest view is that you should not delay a sale you need on the hope of a change. A move driven by health, family or money is rarely worth putting off for a bill that may stall. If your gain is close to the limit and your timing is flexible, talk it through with a tax adviser.
Reporting the Sale and When to Get Help
Many sellers think a fully excluded gain means nothing to report. That is not always true. The IRS says you must report the sale if you received Form 1099-S, even if the whole gain is excludable. Reporting uses Form 8949 and Schedule D of Form 1040.
The title or escrow company usually issues the 1099-S at closing. Ask your closing agent early whether one will be filed, so you are not surprised in February.
When should you pay a professional? I would book a tax adviser if your estimated gain is within about $50,000 of your limit. I would also do it after a death, a divorce, or years of renting out part of the house. Rental or business use can trigger depreciation rules that are hard to unpick alone. An hour of advice is cheap next to a five-figure tax bill.
Your Next Step Before You List
Most family home sellers will owe little or no capital gains tax. The ones who do are usually long-time owners in high-value areas, single sellers, or people who never tracked their improvements. All three can plan ahead.
This week, find your purchase settlement statement and list every major project you remember. Then estimate your gain with the table above and take that number to your first agent meeting. It belongs next to the valuation. For more on pricing and timing, browse our selling guides for long-time owners.
Do I have to pay capital gains tax when I sell my house?
How do I lower the taxable gain on my home sale?
Can a widow still use the $500,000 exclusion?
Has Congress raised the home sale exclusion yet?
This guide is part of our Selling series. One small job a week arrives in Sunday Notes, with nothing to sell you.
In this article 12 sections
Sunday Notes
One email.
One small job
for the week.
Every Sunday: a single checklist, a single story, nothing to sell you. Unsubscribe in one click.
