Capital Gains Tax When Selling a House in Texas: The 2026 Guide

Every week I sit across from a seller who is about to make a six or seven figure decision based on a tax rule they half remember from 1997. Texas is one of the best states in the country to sell real estate in, and most sellers here will owe nothing at all. But the ones who do owe are often the ones least prepared for it, especially at the top of the Austin market, where a decade of appreciation can blow past the federal exclusion without anyone noticing. Here is how the tax actually works in 2026, what Texas does and does not charge you, and the legitimate ways to shrink the bill.

Does Texas tax capital gains on a home sale?

No. Texas has no state income tax, so there is no state-level capital gains tax on real estate, period. This is one of the quiet advantages Texas sellers enjoy over almost every other major market. A California seller with a $700,000 taxable gain can owe the state north of $90,000 on top of the federal bill. The same seller in Austin owes California nothing and Texas nothing. It is a major reason relocating buyers keep moving to Austin from California, and it is worth remembering that Texas takes its cut a different way, through property taxes. I cover that side of the ledger in my guide to Austin property taxes.

So for a Texas seller, the entire capital gains question is a federal question.

The federal home sale exclusion: the $250,000 and $500,000 rule

Section 121 of the tax code is the single most valuable tax break most homeowners will ever use. If you owned the home and lived in it as your primary residence for at least two of the five years before the sale, you can exclude up to $250,000 of gain from federal tax as a single filer, or up to $500,000 filing jointly.

Three details matter more than people realize:

The two years do not need to be consecutive. Any 24 months of ownership and use within the five-year window ending on the sale date will qualify you.

You can use it repeatedly. The exclusion is available once every two years, for life. There is no age limit, no one-time rule, and no requirement to buy a replacement home. Both of those ideas come from rules Congress repealed in 1997, and they refuse to die.

It excludes gain, not sale price. A $900,000 sale with a $400,000 gain is fully covered for a married couple. A $900,000 sale with a $600,000 gain is not.

Owners who have been claiming the Texas homestead exemption on the property usually have clean documentation of primary residence status, which makes the two-of-five test easy to substantiate.

How your taxable gain is actually calculated

The tax is never on what you sold for. It is on your gain, and your gain is almost always smaller than sellers assume, because two things reduce it before any exclusion applies.

Your cost basis

This is what you paid, plus qualifying capital improvements over the years. A new roof, a kitchen remodel, an addition, a pool. Repairs do not count, but improvements do, and over a long ownership they add up. This is why I tell every client to keep a permanent file of improvement receipts. In an audit, receipts are the difference between a documented basis and an argument.

Your selling costs

Brokerage compensation, title policy fees, legal fees, and transfer costs all reduce the amount realized. On a luxury sale these routinely run into six figures, and they come off the top before gain is even measured. Staging and pre-sale preparation can factor in as well, which I break down in my guide to staging costs for Austin luxury homes.

The formula: sale price, minus selling costs, minus cost basis, equals gain. Then subtract the exclusion. Whatever remains is taxable.

2026 federal capital gains rates

For a home owned more than one year, the gain above your exclusion is a long-term capital gain. The 2026 brackets, set by IRS Revenue Procedure 2025-32, apply based on your total taxable income in the year of sale:

Two overlays to know. First, the gain itself stacks on top of your other income, so a large sale can push part of the gain into a higher bracket in the year you sell. Second, the net investment income tax adds 3.8% on investment income, including non-excluded home sale gain, once modified adjusted gross income passes $200,000 single or $250,000 joint. Stacked together, a high earner's real federal top rate on the gain is 23.8%. If you sold within one year of buying, none of the preferential rates apply and the gain is taxed as ordinary income, which is one of several reasons quick flips get underwritten differently.

The Austin problem: when your gain clears $500,000

Here is the part of this conversation that has changed the most in my 11 years selling Austin real estate. The $250,000 and $500,000 exclusion amounts were set in 1997 and have never been adjusted for inflation. In 1997 they covered essentially every homeowner in America. In 2026, in Austin's most expensive neighborhoods, they cover almost no long-term owner.

A realistic example from the west Austin market:

That is a real number, and it is exactly the kind of number that should be on the table during listing strategy, not discovered at tax time. When I take on a listing at this level, the net sheet includes the tax picture from day one, because it changes decisions about timing, pricing, and sometimes whether to sell publicly at all. Some of my sellers with large embedded gains prefer the discretion and negotiating control of a private, off-market sale, and the tax conversation is often what starts that discussion. The full public-market playbook is in how to sell a luxury home in Austin.

Legitimate ways to reduce the tax

Document every improvement. The cheapest tax planning available is a folder of receipts. Every dollar of documented improvement is a dollar of gain that never existed.

Mind the calendar. The two-of-five-year window is unforgiving. Sellers who moved out and leased the home sometimes drift past the three-year mark and forfeit the entire exclusion. If you have been leasing your former residence, check the dates before you list, not after.

Time the sale against your income. Because the brackets key off taxable income, selling in a lower-income year, such as the year after a retirement or a business sale, can move six figures of gain from 20% down to 15%.

Use a 1031 exchange for investment property. The exclusion covers primary residences. For rentals and investment property, the deferral tool is a like-kind exchange, which I cover in detail in my 1031 exchange guide for Texas investors. The two rules can even be combined on a property that has served both roles, though the post-2008 non-qualified use rules make that math genuinely technical, and it is CPA territory.

Know the inherited property rule. Heirs generally receive a stepped-up basis equal to the property's value at the owner's death. Decades of appreciation can vanish from the tax calculation entirely, which is why inherited homes are often better sold than gifted during life.

None of this replaces professional advice. It ensures you walk into your CPA's office asking the right questions.

Will Congress eliminate this tax?

Maybe eventually, not yet. As of mid-2026 there are several live bills in Washington aimed at this exact issue, including proposals to remove the exclusion caps entirely for primary residences and a bipartisan bill to double the caps and index them to inflation. The White House has publicly flirted with the idea. But none of it has passed, and the exclusion amounts today are the same ones set in 1997. Plan your sale on current law. If Congress acts, it will be a windfall, not a plan.

Frequently asked questions

*This article is general education on federal tax law, not tax or legal advice. Rules change and individual situations vary. Consult a CPA or tax attorney before acting on any strategy described here.*

The bottom line

Texas gives you the friendliest possible state tax treatment on a home sale. The federal side rewards preparation: know your basis, know your dates, and know your number before you list. If you are weighing a sale anywhere in the Austin market, I build the full net sheet, including the tax picture, as part of every listing strategy. Start with a confidential valuation of your property, or contact Echelon Property Group directly and we will run the numbers together.

Taylor Sherwood | Echelon Property Group | 512.661.3843 | taylor@echelonpropertygroup.com