Most Texas home sellers don’t owe a dollar of capital gains tax on their primary residence sale, because of the Section 121 exclusion in the Internal Revenue Code. The exception cases — high-net-worth sellers, investment property, vacation homes, and rental conversions — are where the tax math actually starts mattering, sometimes for tens or hundreds of thousands of dollars.
This piece walks through how capital gains tax actually applies to Texas property sales: the Section 121 primary residence exclusion, the partial-exclusion rules when you don’t meet the standard test, the step-up in basis for inherited property, depreciation recapture on rental conversions, and where a 1031 exchange fits for investment property.
Quick disclaimer up front. I run a real estate acquisitions company in Texas. I am not a CPA, this is not tax advice, and the IRS rules around any of these provisions can change. Anything specific to your situation needs to run through a CPA who can look at your actual numbers and dates. What I can tell you is the operational reality — which sellers in Texas actually pay capital gains tax, and which ones discover at closing that they don’t.
Section 121 — the primary residence exclusion that wipes out most sales
The core provision is IRC §121, codified in 1997 as the Taxpayer Relief Act replacement for the old over-55 home sale rule. The rule:
- $250,000 of gain excluded from federal capital gains tax for single filers
- $500,000 of gain excluded for married filing jointly
- 2-of-5-years rule: You must have owned the property for at least 2 of the last 5 years before sale, AND used it as your primary residence for at least 2 of the last 5 years
- Once every 2 years: You can only use the full exclusion once every 2 years (so flipping primary residences every 18 months doesn’t work)
The math is simple. Calculate your gain as:
Sale price − selling costs − adjusted tax basis = gain
Your adjusted tax basis is what you paid for the property plus the cost of significant capital improvements (new roof, kitchen remodel, room addition, HVAC system replacement, foundation repair) minus any depreciation you took (typically zero on a true primary residence).
If your gain is below the $250K / $500K threshold and you meet the 2-of-5-years test, your federal capital gains tax owed is zero.
A worked example. A married couple in Plano:
- Bought their house in 2014 for $285,000
- Spent $42,000 over the years on capital improvements (kitchen remodel, roof, HVAC) — basis becomes $327,000
- Sell in 2026 for $485,000
- Selling costs (commission, closing): $32,000
- Net sale: $485,000 − $32,000 = $453,000
- Gain: $453,000 − $327,000 = $126,000
The $126,000 gain is well under the $500,000 married exclusion. Federal capital gains tax owed: $0. Texas state capital gains tax owed: $0 (Texas has no state income tax).
This is the typical Texas primary residence sale. Most sellers leave the closing table with zero tax bill.
Why Texas sellers come out ahead vs. high-tax states
Texas has no state income tax, which has direct implications for property sales:
- No state capital gains tax. California taxes long-term capital gains at the top marginal income tax rate (up to 13.3%). New York taxes them up to 10.9%. Texas: zero.
- No state estate or inheritance tax. Texas eliminated its state estate tax in 2005. The federal estate tax still applies to estates above the federal exemption ($13.61 million per individual in 2024, indexed for inflation), but most Texas estates fall well below that.
- Higher property tax in exchange. Texas funds state government largely through property tax (typically 2.0–2.5% of value in DFW counties) and sales tax. The trade-off is significant.
The practical result: a Texas homeowner selling a $600,000 house at a $200,000 gain pays the same federal capital gains tax as a Californian, but no state tax on the gain itself. On a high-gain sale (above the Section 121 exclusion), the state-level savings can be tens of thousands of dollars.
Partial exclusion for unforeseen circumstances
If you don’t meet the strict 2-of-5-years test, you may still qualify for a prorated partial exclusion under IRC §121(c). The qualifying reasons:
- Change in employment — a new job that’s at least 50 miles farther from your old home than the old job was
- Health — a move recommended by a physician for medical reasons (your own, your spouse’s, your child’s, or another household member’s)
- Unforeseen circumstances — defined in Treasury Regulation §1.121-3 to include:
- Death of the taxpayer, spouse, co-owner, or member of household
- Divorce or legal separation
- Becoming eligible for unemployment compensation
- Change in employment status that makes it impossible to pay basic living expenses
- Multiple births from the same pregnancy
- Damage to the residence from a natural or man-made disaster
- Involuntary conversion of the property (eminent domain, casualty loss)
The partial exclusion is calculated as:
Standard exclusion × (months of qualifying ownership/use ÷ 24 months)
A worked example. A single seller in Houston who got a job offer in San Antonio:
- Lived in Houston house for 15 months as primary residence before the job change
- Sells the Houston house upon relocating
- Standard single exclusion: $250,000
- Qualifying months: 15 out of 24 = 62.5%
- Partial exclusion: $250,000 × 62.5% = $156,250
If the gain on the sale is under $156,250, the seller owes zero federal capital gains. If the gain is $200,000, only $43,750 is taxable.
The qualifying-circumstance documentation matters. The IRS will look at the actual facts. A job change with formal offer letter, a medical move with physician documentation, a divorce decree — all of these get accepted. A “I just wanted to move” situation does not.
Military exception — the 5-of-10-years rule
Active-duty military service members and certain foreign service and intelligence community members get an expanded rule under IRC §121(d)(9), enacted via the Housing Assistance Tax Act of 2008 and extended through subsequent legislation.
The expansion: the standard 2-of-5-years rule can be suspended for up to 10 years for “qualified official extended duty” — assignments at duty stations at least 50 miles from the property or under government orders to live in government quarters.
The practical effect: a military service member can own a Texas house, get deployed or PCS’d to another duty station for years, eventually return to the Texas house or sell it, and still qualify for the full Section 121 exclusion as long as the combined ownership and use add up to 2 of the relevant 10-year window.
This matters for Texas because of the large military presence — Fort Cavazos, Fort Bliss, JBSA (Lackland, Randolph, Sam Houston), NAS Corpus Christi, Sheppard AFB, Goodfellow AFB, Naval Station Kingsville. Military sellers in Texas should know this rule exists and document their qualifying duty periods.
For the practical mechanics of selling a Texas house under PCS orders, see the military PCS Texas guide.
Step-up in basis — the biggest tax break in inherited property
When you inherit property in Texas, your tax basis in the property gets reset to the fair market value at the date of the decedent’s death. This is the step-up rule under IRC §1014, and it’s one of the most significant tax benefits in the entire code.
The mechanic:
- Original owner’s basis in the property is irrelevant for the inheritor
- Inheritor’s new basis = fair market value at date of death
- If inheritor sells shortly after inheritance, the gain is typically zero or very small
A worked example. A Texas grandmother in Tyler bought her house in 1972 for $32,000. She maintained it well, made some improvements over the years, but didn’t sell. She died in 2024 when the house was worth $235,000 based on an estate appraisal.
- Grandmother’s original basis: $32,000
- Stepped-up basis for heir under IRC §1014: $235,000
- Heir sells the house in 2025 for $245,000
- Taxable gain: $245,000 − $235,000 (stepped-up basis) − $14,700 (6% selling costs) = negative $4,700
The heir owes zero federal capital gains tax. In fact, they have a small loss that may be deductible on investment property (it’s not deductible on personal-use property under IRC §165(c)).
If instead the heir had used the grandmother’s original $32,000 basis, the taxable gain would have been roughly $200,000 — potentially $30,000 to $40,000 in federal capital gains tax. The step-up wipes that out.
The estate appraisal documentation matters. Get a formal date-of-death appraisal from a qualified appraiser. Many heirs skip this and discover later they don’t have documentation of the basis. The IRS expects substantiation.
For inherited hoarder properties, distressed inherited properties, or properties that have declined since inheritance, the stepped-up basis often means selling at a price below FMV actually generates a small recognized loss with no tax owed — sometimes a small deductible loss depending on personal-use status.
For more on the probate intersection with inherited property sales, see the selling inherited house Texas guide.
Depreciation recapture — the landlord’s surprise
Texas has a large stock of rental property — tired landlords selling 1990s suburban rentals, inherited properties that became rentals, military service members converting prior residences to rentals during PCS. The single biggest tax surprise for these sellers is depreciation recapture.
The rule. While you own a rental, you can (and per §1.167(a)-10, allowed-or-allowable, you essentially must) take depreciation deductions against your rental income — typically $5,000–$15,000 per year on a single-family rental, depending on basis and method. Those deductions reduce your taxable rental income year over year.
When you sell, the IRS recaptures that depreciation at a flat 25% rate under IRC §1250 — the unrecaptured Section 1250 gain provision. This applies separately from the capital gains calculation on appreciation.
A worked example. A landlord in San Antonio:
- Bought a rental in 2014 for $155,000
- Took $72,000 in cumulative depreciation deductions over 11 years
- Adjusted basis after depreciation: $155,000 − $72,000 = $83,000
- Sells in 2025 for $285,000
- Selling costs: $18,500
- Net sale: $266,500
- Total gain: $266,500 − $83,000 = $183,500
The tax math:
- Depreciation recapture (25% rate): $72,000 × 25% = $18,000
- Capital gains on appreciation (typically 15–20% federal long-term rate): ($183,500 − $72,000) × 15% = $16,725 (assuming 15% bracket — could be 20% if income is high)
- Total federal tax: $34,725
The Section 121 exclusion does not apply — this is investment property, not primary residence. The landlord pays roughly $34,725 in federal tax on this sale.
This is the single biggest reason to consider a 1031 exchange before selling a Texas rental — it can defer the entire amount.
1031 exchanges — the deferral path for investment property
IRC §1031 allows you to defer the recognition of gain when you sell investment real estate and reinvest the proceeds into other investment real estate, following specific procedural rules.
The basic mechanics:
- Like-kind requirement. The replacement property must be “like kind” to the relinquished property — for real estate, almost any investment real estate qualifies as like-kind to any other investment real estate (rental to rental, raw land to commercial, etc.). The 2017 Tax Cuts and Jobs Act removed personal property from 1031 eligibility, but real estate-to-real estate is unaffected.
- Qualified intermediary required. You cannot touch the proceeds. A qualified intermediary (QI) — typically a 1031 exchange company — holds the proceeds between sale and replacement purchase.
- 45-day identification window. Within 45 days of the relinquished property closing, you must identify in writing the potential replacement property or properties.
- 180-day acquisition window. Within 180 days of the relinquished property closing, you must actually close on the replacement property.
- Equal or greater value. The replacement property must be of equal or greater value to fully defer the gain. Any “boot” (cash you take out) is taxable.
The 1031 doesn’t eliminate the tax — it defers it. When you eventually sell the replacement property without doing another 1031, the deferred gain gets recognized then. If you die holding the property, your heirs get a stepped-up basis under IRC §1014 and the deferred gain effectively disappears (a strategy often called “swap till you drop”).
For Texas landlords ready to exit, the 1031 path can be transformative — deferring $34,000 of recapture-plus-capital-gains tax frees up that capital for the next investment. But the rules are strict and the timing is tight. You cannot 1031 a deal you’ve already closed — the structure must be in place before the sale.
Talk to a CPA and a qualified intermediary before signing any sale contract you want to roll into a 1031. The most common 1031 failure mode is sellers who decide to 1031 after closing — by then it’s too late.
Form 1099-S and IRS reporting
At closing on a real estate sale, the title company files Form 1099-S with the IRS reporting the gross proceeds of the sale to the seller’s Social Security number or EIN. The 1099-S is also sent to the seller.
The 1099-S reporting does not mean tax is owed. It means the IRS knows the transaction happened and will expect the seller to report it on their tax return — even if Section 121 wipes out the gain.
A 1099-S can be exempted for primary residence sales below $250K single / $500K married under specific certifications at closing. The title company will ask the seller to certify the property was their primary residence and the gain is below the threshold. If you qualify and certify, the 1099-S is not filed and the seller doesn’t have to report the transaction on their return.
For inherited property, investment property, and any sale above the §121 threshold, the 1099-S is always filed. The seller reports the transaction on Schedule D and Form 8949 of their personal return.
The high-net-worth scenarios where tax actually bites
Setting aside the typical primary-residence sale where Section 121 handles everything, the cases where Texas sellers actually owe meaningful capital gains tax:
Multi-million dollar primary residences. A $2.5M Dallas mansion sold by a married couple with a $1.4M gain. The first $500K is excluded under Section 121. The remaining $900K is taxed at long-term federal rates (15–20% plus the 3.8% net investment income tax for high earners). Tax bill: roughly $170,000–$215,000.
Long-held investment property. A 1996-purchased Houston rental sold for a $400K gain with $90K of accumulated depreciation. Recapture: $22,500. Capital gains on appreciation: $46,500 (15% bracket) to $62,000 (20% bracket). Total federal tax: $69,000–$84,500.
Vacation home sales. A Hill Country lake house, never used as primary residence, sold at a $300K gain. No Section 121 available. Full long-term capital gains: $45,000–$60,000 plus NIIT for high earners.
Short-term flips. A house bought, lived in for 14 months, then sold for a $180K gain. No qualifying unforeseen circumstance. Short-term capital gains taxed at ordinary income rates (up to 37% federal). Tax bill: potentially $40,000–$65,000.
For each of these, the tax planning before the sale matters significantly. A 1031 exchange (investment property), an installment sale (spreading gain over multiple tax years), a charitable remainder trust, or other strategies can change the math. None of these can be implemented after closing.
Texas Realtors don’t give tax advice
The most common scenario we see: a seller talks to their listing agent about tax implications, the agent gives general guidance that turns out to be incomplete or wrong, the seller closes, and the surprise tax bill arrives the following April.
Texas Real Estate Commission rules prohibit licensed real estate agents from giving tax advice. Most agents know this and disclaim accordingly. But the pressure to provide an answer often leads to general statements that miss the specifics — the depreciation recapture, the partial-exclusion qualification, the holding period question.
The right sequence on any non-routine Texas property sale: talk to a CPA before signing a contract. A 30-minute conversation can identify whether you owe tax, how much, and what alternatives exist. The cost is small. The downside of skipping it can be substantial.
The bottom line
Most Texas home sellers owe zero capital gains tax. The Section 121 exclusion ($250K single / $500K married) plus Texas’s lack of state income tax means a primary residence sale at a reasonable gain produces no federal or state tax bill.
The exceptions matter. Investment property triggers depreciation recapture at 25% plus capital gains on appreciation. Vacation homes get no §121 exclusion. High-gain primary residence sales above the threshold owe capital gains on the excess. Rental conversions have specific math under §121(b)(5) and the post-2009 non-qualified use adjustment.
For inherited property, the step-up in basis under §1014 typically wipes out the gain entirely — but documenting the date-of-death basis is critical.
For investment property, a 1031 exchange can defer the entire bill — but the structure has to be in place before closing.
Before any non-routine Texas property sale, talk to a CPA. Run the actual numbers against your actual situation. The downside of guessing is large; the cost of getting professional advice is small. This piece is general information and not tax advice — your situation is yours, and the rules change with both legislation and Treasury regulations.