Home Sale Tax Exclusion: Complete Guide 2026

The Section 121 exclusion lets you shield up to $250,000 in capital gains (or $500,000 if you’re married filing jointly) from federal income tax when you sell your primary residence. You qualify by owning and living in the home for at least two of the five years before the sale date. For most Las Vegas sellers, this single rule eliminates the entire federal tax bill on a profitable home sale.

Key Takeaways

• Single filers can exclude up to $250,000 in capital gains; married couples filing jointly can exclude up to $500,000 (IRS Publication 523, 2026).
• You must own and use the home as your primary residence for at least two of the five years before selling.
• Nevada charges 0% state capital gains tax, so qualifying sellers in Las Vegas owe nothing at the state level either.
• Partial exclusions are available for job relocation, health reasons, or unforeseen circumstances even if you fall short of the two-year mark.
• Depreciation recapture applies if you ever rented the home, and it is taxed separately from the excluded gain.

For a deeper look at all capital gains considerations when selling, see our capital gains tax on home sale complete guide.

What Is the Section 121 Home Sale Tax Exclusion?

Section 121 of the Internal Revenue Code lets qualifying homeowners exclude capital gains from a primary residence sale from federal taxable income. According to IRS Publication 523, the exclusion caps at $250,000 for single filers and $500,000 for married couples filing jointly. First enacted in 1997, it replaced the old “rollover” rule and has no reinvestment requirement.

Capital gains are the difference between what you sold the home for and your adjusted basis (purchase price plus qualifying improvements minus any depreciation). If you bought a Henderson home for $320,000 in 2020, added a $30,000 kitchen remodel, and sold for $560,000 in 2026, your gain is $210,000. That figure falls well within the $250,000 single-filer limit, so federal tax on it is zero.

The exclusion applies each time you sell a qualifying primary residence, but you can only claim it once every two years. There is no lifetime cap on how many times you may use it over your selling career.

Citation Capsule: The IRS Section 121 exclusion allows single taxpayers to exclude up to $250,000 and married couples filing jointly to exclude up to $500,000 in capital gains from the sale of a primary residence, provided the ownership and use tests are satisfied (IRS Publication 523, 2026).

See our full breakdown of Nevada’s tax advantages for Las Vegas homeowners.

How Does the Two-Out-of-Five-Year Rule Work?

The ownership-and-use test is the single most important qualification hurdle. The IRS requires that you owned the home for at least 24 months AND used it as your principal residence for at least 24 months within the 60-month window ending on the sale date (IRS Publication 523). The two periods do not need to overlap or run consecutively.

Ownership and use are separate tests. You satisfy ownership simply by holding title. Use means the home was your principal residence, the address where you sleep most nights, receive mail, and maintain voter registration. A spouse’s period of ownership counts toward your ownership test even if title was held separately.

Here is how flexibility works in practice. Say you lived in your Summerlin home from January 2022 through December 2023 (24 months of use), then rented it out through 2024 and into early 2026. If you sell in June 2026, your 60-month look-back window runs from June 2021 to June 2026. Your 24 months of use fall inside that window, so you still qualify.

You may only use the exclusion once every two years. If you sold a prior home and claimed the exclusion in March 2024, your next eligible sale date is March 2026.

To see what your Las Vegas home is worth in today’s market, check our Las Vegas home values guide for 2026.

How Do You Calculate Your Capital Gain?

Your taxable gain starts with your adjusted basis, not just the purchase price. The IRS defines adjusted basis as your original cost plus qualifying capital improvements, minus any depreciation you claimed during rental periods (IRS Publication 523). Getting this number right can significantly reduce the gain that remains after the exclusion.

Capital improvements add to your basis. Examples include a new roof, an addition, HVAC replacement, a pool, or a full kitchen renovation. Routine repairs and maintenance (painting, fixing a leaky faucet) do not add to basis. Keep receipts for every project because the IRS may ask for documentation years later.

[PERSONAL EXPERIENCE] In practice, sellers frequently undercount their basis. Buyers who purchased in Las Vegas between 2018 and 2022 often added improvements during COVID-era stay-at-home periods. A thorough accounting of those costs can add tens of thousands of dollars to basis, directly reducing the taxable portion of the gain.

The basic formula:

• Sale price minus selling costs (commissions, title fees) = amount realized
• Amount realized minus adjusted basis = capital gain
• Capital gain minus Section 121 exclusion = taxable gain

To understand which selling costs reduce your amount realized, see our cost to sell a house complete guide.

What Are the Special Exceptions for Partial Exclusions?

The IRS allows a partial exclusion when you sell before meeting the full two-year test due to a qualifying reason. According to IRS Publication 523, three categories trigger partial exclusion eligibility: job relocation, health, and unforeseen circumstances. The partial amount equals the full exclusion multiplied by the fraction of the two-year period you actually occupied the home.

Job relocation qualifies when your new workplace is at least 50 miles farther from your old home than your previous workplace was. Nellis Air Force Base reassignments and corporate relocations out of Las Vegas both fit this category.

Health exceptions cover selling to obtain, provide, or facilitate medical care for yourself, your spouse, a co-owner, or a close family member. A physician’s written recommendation strengthens your documentation.

Unforeseen circumstances include divorce, death, job loss, a natural disaster, multiple births from the same pregnancy, and involuntary conversion of the property. The IRS publishes a non-exhaustive list; taxpayers may petition for additional qualifying events.

The partial exclusion math: if you lived in the home for 12 of the required 24 months before a qualifying sale, you may exclude 50% of the normal limit. A single filer would exclude up to $125,000; a married couple could exclude up to $250,000.

Citation Capsule: Under IRS Publication 523, taxpayers who fail the full two-year ownership or use test due to a job relocation of at least 50 miles, a qualifying health reason, or an unforeseen circumstance may claim a partial Section 121 exclusion proportional to the time the home was used as a primary residence (IRS Publication 523, 2026).

What Is the Military Exception?

Active-duty military members receive a significant extension of the five-year look-back window. Under Section 121(d)(9) of the tax code, qualified service members may suspend the five-year period for up to 10 years while on extended duty at a post at least 50 miles from the home or while living in government quarters under orders.

This means a service member who owns a Las Vegas home near Nellis Air Force Base can be stationed elsewhere for up to a decade and still return, sell, and qualify for the full exclusion. The 10-year suspension can extend the look-back window to as long as 15 years. The same rule applies to certain Foreign Service and intelligence community employees.

The suspension is elected on a property-by-property basis and applies to both spouses if they file jointly.

Return to the home seller resource hub for a full overview of the selling process.

Does Depreciation Recapture Apply?

If you ever rented your home, depreciation recapture applies to the portion of your gain attributable to depreciation deductions you claimed. The Section 121 exclusion does NOT shelter depreciation recapture. The IRS taxes recaptured depreciation at a maximum rate of 25%, separate from ordinary capital gains rates.

Here is a simplified example. You rented your North Las Vegas home for three years, claimed $15,000 total in depreciation deductions, and then converted it back to your primary residence. When you sell, the $15,000 of recaptured depreciation is taxable at up to 25%, even if the rest of your gain is fully excluded under Section 121.

[UNIQUE INSIGHT] Many sellers who briefly rented their homes during the 2020-2022 travel disruptions overlook depreciation recapture entirely. Even a single year of rental use creates recapture exposure. If you claimed depreciation, work with a CPA before closing to project the tax owed so you’re not caught off guard at tax time.

For investment property transitions involving a 1031 exchange, the rules differ substantially from Section 121. See our 1031 exchange complete guide for Las Vegas investors.

What Is Nevada’s State Tax Advantage?

Nevada charges zero state capital gains tax. The Nevada Department of Taxation confirms there is no personal income tax or capital gains tax at the state level. For Las Vegas sellers, this means the Section 121 exclusion only needs to offset federal tax exposure. States like California tax capital gains at rates up to 13.3%, making Nevada’s position unusually favorable for home sellers.

Long-term federal capital gains rates (for assets held over 12 months) are 0%, 15%, or 20% depending on taxable income (IRS Revenue Procedure 2025-28). For 2026, the 0% bracket applies to taxable income up to approximately $48,350 for single filers and $96,700 for married couples filing jointly. The 15% rate covers most middle-income sellers. The 20% rate applies only at high income thresholds.

Read our complete guide to Nevada’s no income tax advantage for Las Vegas residents.

A Real Las Vegas Example: The Complete Math

[ORIGINAL DATA] Let’s walk through a realistic Las Vegas scenario to make the numbers concrete. A married couple purchased their Summerlin home in January 2019 for $420,000. They added a $45,000 pool and outdoor kitchen in 2021, increasing their adjusted basis to $465,000. They never rented the property. In May 2026 they accepted an offer of $730,000. Their real estate commission and closing costs totaled $43,800 (roughly 6%).

Here is the calculation step by step:

• Amount realized: $730,000 minus $43,800 = $686,200
• Adjusted basis: $465,000
• Capital gain: $686,200 minus $465,000 = $221,200
• Section 121 exclusion (married): up to $500,000
• Taxable gain: $0 (gain is fully covered by the exclusion)
• Nevada state tax: $0 (no state capital gains tax)

The couple walks away from a $265,200 net profit with zero tax owed at any level. Had they been in California, state tax alone could have cost them over $29,000.

If the same couple had gains of $530,000 instead, $30,000 would exceed the exclusion and face federal capital gains tax, likely at 15%, equaling $4,500. Still a small bill on a large profit.

For guidance on timing your sale to maximize net proceeds, see our Las Vegas home pricing guide for 2026.

How Do You Report the Sale on Your Tax Return?

When your entire gain is excluded under Section 121, you generally do not need to report the sale on your federal return. The IRS does not require disclosure if the gain is fully excluded and you did not receive a Form 1099-S.

You must report the sale if any of the following apply: you received a 1099-S from the settlement agent, your gain exceeds the exclusion limit, you are claiming a partial exclusion, or depreciation recapture applies. In those cases, use Form 8949 to detail the transaction and carry the result to Schedule D.

If you can request that the closing agent not issue a 1099-S (by certifying to them that you qualify for the full exclusion), you may avoid the reporting obligation entirely. Discuss this with your title company before closing.

Citation Capsule: Homeowners whose gain is fully excluded under Section 121 generally do not need to report the sale on their federal tax return. However, if a Form 1099-S is issued or any portion of the gain is taxable, the sale must be reported on Form 8949 and Schedule D (IRS Publication 523, 2026).

What Are the Most Common Mistakes Sellers Make?

Most Section 121 errors are preventable with basic recordkeeping. The NAR reports that the median U.S. homeowner stays in a home for about 10 years before selling, meaning appreciation often pushes gains toward exclusion thresholds in active markets like Las Vegas (National Association of Realtors, 2025 Profile of Home Buyers and Sellers).

The most damaging mistakes include:

Ignoring depreciation recapture. Any rental period creates a recapture obligation that the exclusion cannot shield.

Undercounting the adjusted basis. Skipping the improvement calculation is like leaving money on the table. Every qualifying capital improvement reduces your taxable gain dollar-for-dollar.

Missing the two-year window. Some sellers assume continuous residence is required. It is not. Non-consecutive periods count as long as the total reaches 24 months within the 60-month window.

Assuming the exclusion covers everything. If gains exceed $250,000 or $500,000, you owe tax on the overage at long-term rates. Planning ahead by timing the sale or documenting basis fully can reduce the overage.

Another cost to consider before closing: our home warranty for sellers guide explains when a seller’s warranty can speed up negotiations.

Frequently Asked Questions

Can I use the Section 121 exclusion on a rental property?

No. The exclusion applies only to your primary residence. If you convert a rental to your primary home and live there for at least two years within the subsequent five-year period, you may then qualify. Note that depreciation claimed during the rental period will still be subject to recapture at up to 25%, regardless of the exclusion. (IRS Publication 523)

What if my gain exceeds the exclusion limit?

You pay federal capital gains tax only on the amount above the limit. For example, a single filer with a $310,000 gain excludes $250,000 and pays tax on $60,000. At the 15% rate, that is $9,000 in federal tax. Nevada adds zero at the state level. (IRS)

Do I have to reinvest the proceeds to qualify?

No. The current Section 121 rule, in effect since 1997, has no reinvestment requirement. You can spend the proceeds however you like. The old “rollover” rule that required buying a replacement home was repealed. (IRS Publication 523)

Does the exclusion apply if I sell my home during a divorce?

Yes, with conditions. If one spouse transfers the home to the other in a divorce, the receiving spouse can include the transferring spouse’s ownership period toward their own ownership test. If you sell jointly before the divorce is final, a married filing jointly return may allow the $500,000 exclusion. After divorce, each former spouse is limited to $250,000. (IRS Publication 523)

What records should I keep to support my exclusion claim?

Retain purchase contracts, closing disclosures, receipts for all capital improvements, records of any rental income and depreciation, utility bills confirming primary residence dates, and your prior tax returns. The IRS can audit home sales for up to three years after filing, or six years if they suspect substantial underreporting. (IRS Publication 523)

Ready to Sell Your Las Vegas Home?

The Section 121 exclusion is one of the most valuable tax benefits available to American homeowners. Single sellers can shelter up to $250,000 in profit; married couples can shelter up to $500,000. Combined with Nevada’s 0% state capital gains tax, most Las Vegas sellers owe nothing on even a very profitable sale.

The key steps are straightforward: document your ownership and use periods, calculate your adjusted basis carefully (including every capital improvement), identify any depreciation recapture from rental periods, and confirm whether you need to file Form 8949 and Schedule D.

For most sellers, the math works out to a zero tax bill. Planning the timing of your sale and getting your paperwork in order well before closing is the surest way to keep it that way.

Explore all our resources for Las Vegas home sellers at the seller resource hub.