Home Sale Capital Gains Tax Calculator: $250,000 / $500,000 Exclusion for 2026

How Capital Gains Tax on a Home Sale Is Calculated

The tax on a home sale comes down to five steps. The calculator above does all of them, and it helps to know what each one is so you can check the result against your own records.

1. Find the amount realized. This is the selling price minus your selling expenses. Selling expenses include agent commissions, advertising, legal fees and any loan charges you paid for the buyer.
2. Find your basis. Your basis is what you paid for the home plus the closing costs you paid when you bought it, plus the cost of improvements that add value or last more than a year. Repairs and routine maintenance are not added.
3. Subtract to get your gain. Amount realized minus basis is your gain. If the answer is negative, you have a loss, and a loss on your main home cannot be deducted.
4. Apply the exclusion. If you pass the ownership and use tests, the first $250,000 of gain ($500,000 if you file jointly and both qualify) is excluded from income.
5. Tax what is left. Any gain above the exclusion is taxed. Gain on a home you owned for more than a year is taxed at the long-term rates of 0%, 15% or 20%, which depend on your total taxable income for the year, not just the gain.

One thing most basic calculators skip is the fifth step. The tax rate on the gain depends on the rest of your income, and for a retiree who collects Social Security, the gain can also change how much of that Social Security is taxed and how big a deduction you get. The calculator includes those effects.

Home Sale Exclusion Rules: The $250,000 and $500,000 Limits

The IRS calls this the home sale exclusion. It lets you leave a large part of your profit out of your income entirely, so no tax is figured on it. The rules come from IRS Topic 701 and Publication 523.

Two more rules apply to every sale. First, the exclusion is for your main home, the place where you actually live. It does not cover a vacation home or a rental. Second, you generally cannot use the exclusion if you excluded gain from another home sale in the 2 years before this sale. That means a couple who sells one home and another within 2 years can use the full exclusion only once, unless a special reason gives a partial amount.

The exclusion also stays available if you are paid over several years. If part of the price is paid in a later year, the IRS treats the sale as an installment sale, and the exclusion remains available even when the installment method defers some of the gain.

The 2 Out of 5 Year Rule, Explained With Examples

The rule has two tests, and they are separate. You must pass both during the 5-year period that ends on the day you sell.

• Ownership test: you (or your spouse, on a joint return) owned the home for at least 24 months.
• Use test: you lived in the home as your main residence for at least 24 months. On a joint return, each spouse must pass this test.

The 24 months do not have to be in a row, and the owning months and living months do not have to be the same months. You could, for example, live in a home for 18 months, rent it out for 2 years, move back in for 6 months, and sell. You have 24 months of use inside the 5-year window.

That example is why timing matters. If you have already moved out, check the date: the 5-year look-back keeps moving, and every month you wait can reduce your months of use inside it.

Members of the military and certain others on qualified official extended duty can choose to suspend the 5-year period for up to 10 years. Topic 701 describes duty of more than 90 days or indefinite length at a station at least 50 miles from the home, or in government housing under government orders.

Selling a Home to Move Into Assisted Living or a Nursing Home

This is one of the most common reasons a senior sells, and the rules help you here. Publication 523 relaxes the use test for people who become physically or mentally unable to care for themselves. If that is you, time spent in a facility counts as time living at home, with these conditions:

• You owned the home and lived in it as your main home for at least 1 year during the 5 years before the sale.
• You owned the home for at least 24 months in that 5-year period.
• The facility is licensed by a state or local government to care for people in your condition, such as a nursing home or an assisted living community.

A year of living in the home, plus time in a care facility, can add up to the 24 months of use. The calculator has a box for this under "Special situations."

If you are weighing a move to a care community, the care facility cost comparison shows what each type of care costs, and the long-term care savings runway calculator shows how long your savings, including the proceeds of the sale, could last.

Selling After a Spouse Dies: The Surviving Spouse Rule

If your spouse has died, you may be able to keep the larger $500,000 exclusion even though you now file as a single person. Publication 523 sets these conditions:

• The sale is no more than 2 years after your spouse's death.
• You have not remarried.
• You and your spouse met the use test at the time of the death, and one of you met the ownership test.
• Neither of you had excluded gain on another home sale in the 2 years before the death.

You are treated as having owned and lived in the home for any period your spouse did. After the 2-year window the exclusion drops back to $250,000. The 2 years run from the date of death, not the end of the tax year, so counting the date carefully matters when the home has risen in value.

If you inherited a home from a spouse who died, or you are settling an estate, see the inherited property capital gains calculator. The basis of a home you inherit can change at death, and that can matter more than the exclusion.

Partial Exclusion: Job Change, Health, or Unforeseen Circumstances

If you sold before you reached 24 months of ownership and use, or you used the exclusion within the last 2 years, you may still get part of it. Publication 523 allows a reduced maximum exclusion when the main reason for the sale was one of these:

• A change in place of employment. The new workplace is at least 50 miles farther from the home you sold than your old workplace was.
• Health. The sale was to obtain, provide or facilitate diagnosis, cure, mitigation or treatment of a disease, illness or injury, for you or a close family member.
• Unforeseen circumstances. An event you could not reasonably have predicted when you bought and moved in, such as a death, a divorce, or a job loss that qualified you for unemployment.

The reduced maximum is the full $250,000 (or $500,000) multiplied by the shortest of three periods divided by 24 months: how long you owned the home, how long you lived in it, or the time since your last exclusion. If you owned and lived in the home for 12 months and sold because of a job change, your maximum is half: $125,000 on a single return.

How to Calculate Your Home's Cost Basis

The most common error in a home sale calculation is using only the purchase price as the basis. Your basis is usually higher, and a higher basis means a smaller gain. Use the list below as a record-hunting guide.

What goes into your basis

• The purchase price, including the mortgage you took on.
• Settlement costs you paid at purchase that are not deductible, such as title insurance, recording fees and legal fees.
• Improvements that add value, extend the home's life, or adapt it to a new use: a room addition, a new roof, a new furnace, a deck, new windows, a remodeled kitchen or bathroom, a new septic system.
• Special assessments for local improvements, such as sidewalks or sewers.

What does not go into your basis

• Repairs and routine maintenance that keep the home in good condition, such as repainting or fixing a leak.
• Improvements you removed or replaced. If you replaced a roof, the cost of the old one comes out.
• Costs of selling, which reduce the amount you receive instead.

Keep the closing statement from your purchase and receipts for large projects. If you cannot find them, ask your title company or county recorder for copies of the purchase documents, and check old bank statements and contractor invoices for improvements. A homeowner who has lived in a house for 30 years and cannot show $60,000 of improvements may pay tax on gain that was never really there.

Capital Gains Tax Rates for 2026 and Where Your Gain Lands

Gain from a home you owned for more than a year is a long-term capital gain. The rate depends on your taxable income, including the gain itself. Taxable income means income after the standard deduction and other deductions. Rev. Proc. 2025-32 sets these 2026 limits:

Because the 0% band is based on taxable income, a retiree with modest other income can have part of the taxable gain taxed at 0%. The table below shows what a single filer with $40,000 of other income and no Social Security would owe on different gains, before any state tax. The first $250,000 is excluded in every row.

Look at the first row. A $275,000 gain leaves a $25,000 taxable gain, and because other income is low, the whole amount sits inside the 0% band, so the tax is $0. In the second row the taxable gain reaches into the 15% band, and each larger gain costs more. The last two rows also pay the 3.8% net investment income tax, because total income passes $200,000.

If you owned the home for a year or less, the gain is short-term and is taxed at your ordinary rates instead. That only affects people who sell quickly, and the exclusion usually does not apply either unless a special reason does.

The 3.8% net investment income tax

The taxable part of a home sale gain counts as net investment income. When your modified adjusted gross income is above $200,000 (single or head of household) or $250,000 (joint), a 3.8% tax applies to the smaller of the investment income or the amount over the threshold. These thresholds are fixed by law and are not adjusted for inflation. The excluded gain is not counted, so the tax only applies to the gain above the exclusion. See the IRS page on the net investment income tax ↗.

The Hidden Costs for Retirees: Social Security, Senior Deduction and Medicare

A taxable home sale gain does not just add the tax on the gain. It raises your income for the whole year, and that can set off three other costs that a basic capital gains calculator never shows.

1. More of your Social Security becomes taxable

How much of your Social Security is taxed depends on your combined income, and the gain is part of it. A gain can move you from paying tax on part of your benefit to paying tax on up to 85% of it. The Social Security tax calculator shows the effect for your numbers.

2. The $6,000 senior deduction shrinks

The senior deduction of up to $6,000 per person aged 65 or older (tax years 2025 through 2028) is reduced by 6% of your income above $75,000 ($150,000 if you file jointly). A large gain pushes your income into that range, which removes part of the deduction and raises your tax. The senior deduction calculator shows where your deduction ends.

3. Medicare surcharges two years later

Medicare sets your IRMAA surcharge using your income from two years earlier. A taxable gain in 2026 can raise your Part B and Part D premiums in 2028. Even a modest taxable gain can cross a threshold. Check where your income lands in the IRMAA calculator and the MAGI for Medicare calculator, and if a surcharge is already set because of a one-time sale, the IRMAA appeal tool explains the option to ask for a reduction after certain life-changing events.

The table shows the same single retiree, with and without Social Security, selling for a gain above the exclusion. The figures come from the same engine as the calculator.

The Medicare income figure is the adjusted gross income with the gain. Medicare's own thresholds change each year, so check them for the year two years after your sale.

Rental Use, a Home Office, and Depreciation on a Home Sale

If you rented out part of your home or used part of it for business after May 6, 1997, you may have claimed depreciation, or you may have been allowed to. The tax law says depreciation allowed or allowable counts, so it applies even if you never claimed it. Two things follow from it:

• Your basis is reduced by the depreciation, which makes the gain larger.
• The part of the gain equal to the depreciation cannot be excluded. It is taxed as unrecaptured section 1250 gain, at your ordinary rate but no more than 25%.

A home office inside the house, used as part of your living space, does not need to be split out from the rest of the home in the exclusion. A separate rented or business area is reported on Form 4797.

Nonqualified use is a different issue. If, after 2008, the house was a rental or a second home before you made it your main home, a share of the gain equal to the months of that use divided by your total months of ownership cannot be excluded. The calculator has boxes for both under "Special situations."

Worked Examples

How to Report a Home Sale: Form 1099-S, Schedule D and Form 8949

Whether you must report the sale depends on two things. If you receive a Form 1099-S from the settlement agent, you must report the sale on your return, even if all of the gain is excluded. If you do not get one, you report only if some of the gain is taxable.

When reporting is required, the sale goes on Form 8949 and Schedule D (Form 1040). On Form 8949 you show the exclusion as an adjustment, so that only the taxable gain carries to Schedule D. Keep your purchase closing statement, your records of improvements, and the closing statement from the sale for at least as long as the IRS can examine the return.

If you will owe tax on the gain, remember that none is withheld at closing. A large taxable gain can mean an underpayment penalty unless you make an estimated payment or have enough withholding from other income. The retirement tax withholding calculator shows how to adjust withholding from a pension or IRA to cover it.

Legitimate Ways to Lower the Tax on a Home Sale

• Add up every improvement. A higher basis directly reduces the gain. This is the single biggest change most sellers can make.
• Count the 5-year window before you list. If you are close to 24 months of use, a few months can be the difference between a full exclusion and none.
• Use the surviving spouse window. If you are widowed, selling within 2 years keeps the $500,000 exclusion.
• Check the care facility rule. If you are moving to assisted living or a nursing home, time there can count as time at home.
• Pick the tax year. Closing in January instead of December can move the gain into a different year, which can change which rate it falls into and which Medicare year it affects.
• Deduct selling costs. They reduce the amount realized, so make sure every commission and fee is in your total.
• Plan the other income. If you control when you take IRA withdrawals or Roth conversions, taking less in the sale year can keep more of the gain in the 0% and 15% bands. The retirement tax calculator and the Roth conversion calculator help with that.

These are ordinary planning steps and not a substitute for advice. For a large sale, especially one involving rental use, a divorce, or an inherited share, a tax professional who sees the whole return is worth the fee.

Home Sale Capital Gains Tax FAQs

Official Sources and How We Calculate

The calculator follows IRS Topic 701 and Publication 523 for the exclusion, and Rev. Proc. 2025-32 for the 2026 rates, brackets and standard deductions. It figures the tax on the sale as the difference between your 2026 tax with the sale and without it, which captures the effect on taxable Social Security and the senior deduction. Unrecaptured section 1250 gain is taxed at your ordinary rates up to 25%, and long-term gain is stacked on top of your other taxable income. The net investment income tax uses the statutory $200,000 and $250,000 thresholds. We treat all other income as ordinary income and do not include state tax, alternative minimum tax, or other net investment income. The Publication 523 rules were read in the IRS's 2010 edition, in which the rules cited here already applied, and the law has not changed on these points.

Estimate only, federal tax only. Your tax return and a tax professional decide the final amount. We do not store what you enter.