The ownership and use tests
You owned the home for at least 2 of the 5 years before the sale AND used it as your primary residence for at least 2 of those 5 years. Doesn't have to be the same 2 years. Married couples need both spouses to meet the use test for the full $500,000, but only one to meet the ownership test. The exclusion is available once every two years, which matters for anyone selling two homes in quick succession.
Calculating the gain correctly
Gain is the sale price minus selling costs minus adjusted basis, and basis is where sellers shortchange themselves. It starts with what you paid, then adds capital improvements over the years: the roof, the kitchen remodel, the impact windows, the addition. In South Florida, hurricane hardening alone often adds tens of thousands to basis. Records of those projects are the difference between an excluded sale and a taxable one when appreciation is large.
Partial exclusion for unforeseen events
Job relocation over 50 miles, health-related moves, or specified unforeseen circumstances (death, divorce, multiple births) can qualify you for a proportional exclusion even if you didn't meet the full 2-year tests. The proration applies to the exclusion cap, not the gain, so a one-year resident forced to move for work still shelters up to half the full cap, which covers most of those situations entirely.
When the home wasn't always your home
Years the property spent as a rental complicate things two ways. Depreciation claimed (or claimable) during rental years is recaptured at up to 25% and cannot be excluded. And for rental periods after 2008 that precede your move-in, a proration denies the exclusion on the slice of gain attributable to that nonqualified use. Selling a former rental you later lived in takes an actual calculation, not a rule of thumb.
Reporting the sale
If the closing agent issued a Form 1099-S, the sale goes on your return even when the exclusion wipes out every dollar of gain; an unreported 1099-S generates an IRS mismatch notice proposing tax on the entire proceeds. No 1099-S and fully excluded gain means no reporting requirement at all. Either way, keep the closing statements from both purchase and sale for at least three years after filing.
Common questions
- Does depreciation recapture apply?
- If you ever rented the home or claimed business use, yes. Depreciation taken (or allowable) is recaptured at up to 25% and doesn't benefit from the Section 121 exclusion.
- Do I have to report the sale if the gain is fully excluded?
- Only if you received a 1099-S from the closing agent. Then report it and claim the exclusion, or expect an automated notice treating the full sale price as gain.
- Can I use the exclusion on a second home or investment property?
- No. Section 121 is for your primary residence only. Investment property has its own tools, like a 1031 exchange, and a second home has neither.
- We're divorcing and selling the house. Who gets the exclusion?
- Each spouse can exclude up to $250,000 of their share when the tests are met, and use by one spouse under a divorce instrument can count for the other. The sequencing is worth planning before the listing, not after the closing.
Related
Personal Income Tax Preparation
Federal and state 1040 preparation with year-round planning. We handle W-2, 1099, K-1, rental, and crypto income for individuals in Florida and all 50 states.
Tax Planning
Year-round tax planning for individuals and business owners. We project the year's income quarterly and model decisions before they become tax liabilities.
Capital Gains Tax Rates
Long-term gains are taxed at 0%, 15%, or 20% by income; short-term gains use your ordinary rate. 2025 brackets, the 28% collectibles cap, and the 3.8% NIIT.
Converting a Home to a Rental
Renting out a former home starts 27.5-year depreciation and clocks the Section 121 exclusion. The 3-in-5 window, basis rules, and depreciation recapture.
Related tax topics
Taxes in Your First Year of Business
Entity choice, accounting method, quarterly estimates, startup cost deductions, and retirement plans: the first-year decisions that set your tax structure.
Tax Changes When You Get Married
Marriage changes filing status, withholding, and brackets. When Married Filing Jointly beats Separately, new W-4s for both spouses, and the marriage penalty.
Tax Changes After Divorce
Filing status, Child Tax Credit assignment via Form 8332, and QDRO retirement splits after divorce. Post-2018 alimony is neither deductible nor taxable.
Tax Changes When You Have a Baby
A new dependent unlocks the Child Tax Credit, Dependent Care Credit, and a higher EITC. Your child needs an SSN by the deadline; a W-4 update helps sooner.