How Capital Gains Tax on Real Estate Works

Sell an investment property and the tax can claim a quarter to a third of your gain, sometimes more. The headline capital gains rate is only the opening line. Stacked on top are a depreciation-recapture rate, a 3.8% surtax, and state income tax, and together they take a far bigger share than the rate alone implies. This memo walks through the full calculation as it stands in 2026, line by line, then lays out the legal strategies that defer or reduce the bill. It is general information, not tax advice. Your CPA should run your actual numbers before you sign anything.

How the gain is calculated

Capital gains tax applies to your gain, not your sale price. Getting the gain right is the whole foundation, and most disputes with a CPA start here. Your gain is the amount realized (sale price minus selling costs like the brokerage commission, title, and transfer taxes) less your adjusted basis. Adjusted basis is what you originally paid for the property, plus the capital improvements you made over the years, minus the depreciation you claimed while you owned it.

That last subtraction is the one that surprises people. Depreciation is a paper deduction that lowers your taxable income each year you hold a rental, but it also chips away at your basis. A lower basis means a larger gain at sale. So a property you bought for $500,000, improved with a $100,000 renovation, and depreciated by $150,000 over the years has an adjusted basis of $450,000, not $600,000. Sell it for $800,000 net and your gain is $350,000, not the $200,000 the purchase-to-sale spread suggests. Pin down your adjusted basis first. Every number that follows is built on it, and a sloppy basis figure quietly inflates the tax on everything downstream.

Keep the receipts. Improvements that add to basis (a new roof, an addition, a full kitchen rebuild) are easy to lose track of over a decade of ownership, and each dollar of documented improvement is a dollar that does not get taxed at sale. Routine repairs do not count, since those were already deducted as expenses. If you want to model the arithmetic on your own numbers, our capital gains tax calculator walks through the same steps.

One more wrinkle on basis. If you acquired the property through a prior 1031 exchange, your basis carried over from the property you gave up, not the price you paid for the new one. That carryover keeps the deferred gain alive inside the current property, so a building you bought for $1 million might carry a basis well below that. Inherited property works the opposite way, since the basis steps up to fair market value at the prior owner's death. Knowing which path your property took matters before you estimate any tax, because the two can produce very different gains on the same sale price.

Short-term vs. long-term rates

How long you held the property sets the rate, and the cutoff is exactly one year. Hold the property more than a year and the gain is long-term, taxed at the preferential federal rates of 0%, 15%, or 20% depending on your taxable income. Hold it a year or less and the gain is short-term, taxed at your ordinary income rates, which top out far higher than 20%. For a flipper who closes in eight months, that distinction alone can be the difference between a 20% rate and a rate in the high 30s.

Most investment real estate is held for years, so the long-term rates usually apply. But the long-term rate is rarely the whole story, as the next three sections show. Which of the 0/15/20% tiers you land in depends on your total taxable income for the year, not just the size of the gain, and a large gain can push part of your income from the 15% tier into the 20% tier in the same return. The breakpoints below are approximate 2026 figures and adjust annually for inflation, so confirm the current numbers for your filing status before relying on them.

2026 long-term rate	Single (taxable income)	Married filing jointly
0%	Up to ~$49,450	Up to ~$98,900
15%	~$49,450 to ~$545,500	~$98,900 to ~$613,700
20%	Above ~$545,500	Above ~$613,700

The 3.8% net investment income tax

On top of the capital gains rate, higher-income investors owe the net investment income tax (NIIT), an extra 3.8% on net investment income (which includes real estate capital gains) once your modified adjusted gross income clears the threshold. The thresholds are $200,000 for single filers and $250,000 for married couples filing jointly. The 3.8% applies to the smaller of your net investment income or the amount your MAGI exceeds the threshold, so a big one-time gain frequently triggers it in full.

Two details matter for planning. First, the NIIT thresholds are not indexed for inflation. They were set over a decade ago and have not moved, so each year, ordinary wage growth pulls more sellers above the line. Second, a property sale is exactly the kind of event that spikes your MAGI for a single year, which means investors who never owe NIIT on their normal income can owe it in the year they sell. For a high earner, the NIIT turns a 20% long-term rate into 23.8% federal before state tax even enters the picture. We break down the mechanics in our memo on the net investment income tax.

Depreciation recapture

The layer that ambushes the most investors is depreciation recapture. Every year you owned the rental, depreciation reduced your basis and saved you tax at your ordinary rate. At sale, the government takes some of that benefit back. The portion of your gain attributable to depreciation, called unrecaptured Section 1250 gain, is taxed at a federal rate of up to 25%, higher than the 0/15/20% long-term rate that applies to the rest of the gain.

In practice, a real estate sale gets sliced into two pieces. The depreciation-driven portion is taxed at up to 25%, and the remaining appreciation is taxed at the long-term 0/15/20% rate, with the 3.8% NIIT potentially riding on top of both. Take the $350,000 gain from the example above. If $150,000 of it represents recaptured depreciation, that slice faces up to 25%, while the other $200,000 of appreciation faces the long-term rate. Recapture is also why investors who depreciated aggressively can owe a large tax bill even when the sale price barely beat what they paid. It is not optional and it is not waived by simply forgetting to claim depreciation, since the IRS recaptures the depreciation you were allowed to take, whether or not you actually claimed it. Our memo on depreciation recapture covers the edge cases in full.

State income tax

Then the state takes its turn. Most states tax capital gains as ordinary income, with no preferential rate of the kind the federal system offers. A handful of states have no income tax at all, so the state layer adds nothing for residents there. Others, including California, sit at the high end and can add high single digits to your total rate on the same gain. The state generally taxes the gain where the property is located, not only where you live, so selling an out-of-state rental can pull you into another state's return.

Stack the pieces and the arithmetic gets heavy. A long-term federal rate, depreciation recapture up to 25% on part of the gain, the 3.8% NIIT, and a state income tax all apply to the same sale. That is how a seller in a high-tax state can hand over roughly 25% to 35% or more of the gain in combined tax. This is the exact pressure that makes deferral strategies worth the trouble. The table below shows the full stack a high-income seller in a high-tax state can face.

Tax layer	Applies to	Illustrative federal rate
Long-term capital gains	Appreciation portion of the gain	0%, 15%, or 20%
Depreciation recapture (§1250)	Depreciation-driven portion of the gain	Up to 25%
Net investment income tax	Gain, once MAGI clears the threshold	3.8%
State income tax	The full gain, on the state's schedule	Varies (0% to high single digits+)

Ways to defer or reduce the tax

Real estate offers more ways to defer or reduce this tax than almost any other asset, which is the real reason the bill is so often pushed forward rather than paid. The catch worth stating plainly: most of these are deferral, not forgiveness. They move the tax to a later year, a later transaction, or a different taxpayer, and each comes with its own rules and risks. Here is the menu.

• A 1031 exchange defers the entire bill, capital gains, recapture, and NIIT, when you reinvest the proceeds into like-kind property. The rules are strict: identify replacement property within 45 days, close within 180 days, buy equal or up in value, and replace the debt you paid off. Miss a deadline and the deferral is gone.
• A Delaware Statutory Trust (DST) is a passive way to complete a 1031. Instead of buying and managing a replacement building yourself, you take a fractional interest in an institutionally managed property. DSTs are securities, speculative and illiquid, sold only to verified accredited investors via private placement memorandum, and you can lose principal.
• An Opportunity Zone fund works on gains of any kind, not just real estate. Rolling a gain into a qualified fund defers it, and appreciation on the new investment can later be excluded if you hold long enough.
• An installment sale under §453 spreads the gain (and the tax) across the years you collect payments, which can keep you in lower brackets. Note that depreciation recapture is generally taxed up front, not spread.
• A §1033 involuntary conversion defers tax when property is lost to condemnation, casualty, or a forced sale and you reinvest the proceeds, with timelines more generous than a 1031.
• The §121 primary-residence exclusion wipes out up to $250,000 of gain for single filers and $500,000 for joint filers, but it is for a home you lived in, not a rental.
• A charitable remainder trust lets you contribute the property, sell it inside the trust without immediate tax, draw an income stream, and leave the remainder to charity.
• The step-up in basis at death resets an heir's basis to fair market value, which can erase the built-in gain entirely for the next generation. This is why some investors hold until death rather than sell.

No single tool is right for everyone, and several can be combined. We line them up side by side in our memo on how to avoid capital gains tax on investment property, and weigh the trade-offs in tax deferral strategies compared. The right path depends on your goals, your timeline, and whether you want to stay an active landlord or step back. None of it guarantees a tax outcome, and you should confirm any strategy with your own CPA and attorney before acting.

A worked example

Numbers make the stack concrete. Suppose you bought a rental for $500,000, put $100,000 into a documented renovation, and claimed $150,000 of depreciation over the years you held it. Your adjusted basis is $450,000. You sell for $830,000 and pay $30,000 in selling costs, so your amount realized is $800,000 and your total gain is $350,000.

That gain splits in two. The first $150,000 is unrecaptured §1250 gain, taxed at up to 25% federally. The remaining $200,000 is long-term appreciation, taxed at the 0/15/20% rate that matches your income, likely 15% or 20% on a gain this size. If your MAGI clears the NIIT threshold, add 3.8% across the gain. Then your state applies its own rate to the full $350,000. Depending on your bracket and state, the combined federal-and-state tax on this sale can land somewhere in the neighborhood of $90,000 to $120,000, which is why a 1031 exchange that defers the entire amount is worth serious thought before you list. Notice how much of that bill comes from the recapture slice and the surtax, the two layers the headline rate never mentions. These figures are illustrative, not a projection, and your CPA should run the real ones on your actual basis, holding period, and state of residence.