Capital Gains Tax on Selling a Business: Rates, Recapture, and QSBS

Capital gains tax on selling a business runs from 0% to 20% at the federal level for 2026, applied to the difference between the sale price and your adjusted basis in the business. High earners add a 3.8% net investment income surtax on top. And a portion of what looks like capital gain often gets pulled back into ordinary-income rates through depreciation recapture, which is where the final bill tends to surprise sellers. The blended rate you actually pay depends on how long you held the business, how the deal is structured, and how the purchase price is allocated across the assets involved.

How the Taxable Gain Is Calculated

Your taxable gain equals the sale price minus your adjusted basis. Basis starts with what you originally paid to buy or start the business, including legal fees, accounting costs, and other acquisition expenses.¹ Add capital improvements and additional investments over the years, then subtract the depreciation deductions you claimed on equipment and other depreciable property.

One trap catches sellers repeatedly. The IRS requires you to reduce basis by all depreciation you were entitled to take, whether or not you actually deducted it. Skip depreciation for several years and your basis still drops by what you could have claimed.¹ The gain on sale ends up larger than expected.

Documentation carries the whole analysis. Purchase agreements, closing statements, receipts for major improvements, and historical tax returns establish your basis. Brokerage commissions and legal fees from the original acquisition count toward basis and reduce taxable gain.² Sellers who can’t produce records face the worst-case treatment: the IRS may set basis at zero and tax the entire sale price.

Long-Term Capital Gains Rates for 2026

Holding the business more than one year before selling qualifies the gain for long-term rates. Sell within a year and it’s short-term, taxed at your regular income rate, which runs as high as 37%.³

For 2026, the long-term brackets for single filers are:⁴

0% on taxable income up to $49,450
15% on taxable income from $49,451 to $545,500
20% on taxable income above $545,500

For married couples filing jointly, the 0% rate applies up to $98,900 and the 20% rate kicks in above $613,700.⁴ These brackets apply to your total taxable income for the year, which includes the gain from the sale. A seller with modest ordinary income can still land in the 20% bracket once a large one-time sale stacks on top.

Depreciation Recapture

This is where the tax bill often runs higher than sellers expect. When you sell equipment, vehicles, or other tangible property you depreciated, the IRS recaptures that depreciation and taxes it as ordinary income rather than at capital gains rates. Under Section 1245, any gain on the sale of depreciable personal property is ordinary income up to the total depreciation previously deducted.⁵ You could owe up to 37% on that slice instead of 15% or 20%.

Take a piece of equipment bought for $100,000 with $60,000 in depreciation claimed over the years, leaving an adjusted basis of $40,000. Sell it for $110,000, and the $60,000 tied to depreciation is ordinary income. Only the remaining $10,000 of gain above the original cost qualifies for capital gains treatment. In an asset sale involving significant depreciable property, recapture can eat a large chunk of the total tax bill.

Asset Sale vs. Stock Sale

Deal structure shapes the tax outcome more than almost anything else. In an asset sale, the buyer purchases individual items (equipment, inventory, customer lists, goodwill) rather than the entity itself. Each asset gets its own tax treatment. Inventory produces ordinary income. Depreciated equipment triggers recapture. Goodwill generally qualifies for capital gains rates. Both sides report how the purchase price is divided across seven asset classes on IRS Form 8594, and federal law requires that a written allocation agreed to by both parties binds them for tax purposes.⁶

Purchase price flows through the seven classes in order, so the allocation determines how much lands in ordinary-income categories versus capital gains.⁷ Buyers push for allocation to depreciable assets they can write off quickly. Sellers push toward goodwill taxed at capital gains rates. That tension makes allocation one of the most negotiated parts of any business sale.

In a stock sale, the buyer purchases your ownership interest in the entity. The entire gain is generally treated as a single capital gain or loss, because you’re selling equity rather than individual assets. Stock sales are simpler for the seller and typically produce a lower tax bill, but they’re less attractive to buyers, who inherit the entity’s existing tax attributes and liabilities.⁸

The 3.8% Net Investment Income Tax

On top of the capital gains rate, high-income sellers may owe an additional 3.8% tax on net investment income. The surtax kicks in when modified adjusted gross income exceeds $200,000 for single filers or $250,000 for joint filers, and it applies to the lesser of your net investment income or the amount by which your income exceeds the threshold.⁹

There’s an important carve-out for hands-on owners. Gain from selling a business in which you materially participated is generally not net investment income, so the 3.8% surtax doesn’t apply. Material participation means you were regularly and substantially involved in the business, not a passive investor. The IRS uses seven tests, the most straightforward being that you worked in the business more than 500 hours during the tax year.¹⁰ Passive owners and silent partners who meet none of the seven tests owe the surtax on their share of gain.

The $200,000 and $250,000 thresholds aren’t indexed for inflation, so a business sale large enough to be worth planning around will almost certainly push income past them. The material participation question is worth pinning down before the deal closes.

Installment Sales

If the buyer pays over multiple years rather than in a lump sum, the installment method lets you spread the tax across those years. You recognize gain in proportion to payments received. If gross profit represents 60% of the total contract price, then 60% of each annual payment is taxable gain.¹¹

The method applies automatically when at least one payment lands after the close of the tax year in which the sale occurs. You can elect out to recognize the full gain upfront, but reversing that election is nearly impossible without IRS consent. Inventory sales and dealer dispositions don’t qualify.

Large installment sales carry a cost. When the total face amount of outstanding installment obligations exceeds $5 million at year-end, Section 453A imposes an interest charge on the deferred tax liability, calculated on the portion of obligations above $5 million using the IRS underpayment rate.¹² For individuals, this interest charge is generally nondeductible. Installment treatment still saves money in most cases, but the charge erodes the benefit on very large deals.

Sales to related parties get extra scrutiny. If you sell to a family member or related entity and they resell within two years, you’re treated as if you received the resale proceeds when the resale happened, accelerating your tax.¹¹

Qualified Small Business Stock Exclusion

Sellers of C-corporation stock may qualify for one of the most generous breaks in the code. Section 1202 allows exclusion of some or all of the gain from selling qualified small business stock (QSBS), which can drop the federal capital gains tax on the sale to zero. The One Big Beautiful Bill Act, signed July 4, 2025, expanded the benefit for stock issued after that date.

To qualify, the stock must be issued by a domestic C-corporation, and you must have acquired it at original issuance in exchange for money, property, or services. Secondary-market purchases don’t count. The corporation must use at least 80% of its assets in an active qualified trade or business. Several industries are excluded from QSBS treatment, including health care, law, engineering, accounting, financial services, consulting, athletics, banking, insurance, farming, mining, and hospitality businesses like hotels and restaurants.¹³

The exclusion depends on when the stock was issued and how long you held it. For stock issued after July 4, 2025, the corporation’s gross assets cannot have exceeded $75 million at issuance. A tiered exclusion applies: 50% of the gain after a three-year hold, 75% after four years, 100% after five years. The per-issuer gain cap is $15 million, indexed for inflation starting in 2027.¹³ For stock issued between September 28, 2010 and July 4, 2025, gross assets cannot have exceeded $50 million, a full 100% exclusion applies after a five-year hold, and the cap is $10 million per issuer or ten times your adjusted basis, whichever is greater.

Opportunity Zone Deferrals

Sellers who roll capital gains into a Qualified Opportunity Fund can defer tax on those gains, and appreciation on a QOF investment held at least ten years comes out tax-free.¹⁴ Note the hard deadline: the current program requires recognition of all deferred gains by December 31, 2026. Any gain deferred through a QOF gets pulled into 2026 income unless the investment was disposed of earlier. Sellers closing in 2026 should weigh whether the short remaining deferral period justifies the investment constraints.

State Capital Gains Taxes

Federal taxes are only part of the picture. Most states tax capital gains as ordinary income, with rates ranging from 0% in states with no income tax to over 13% in the highest-tax states. The combined federal and state rate for a high-income seller in a high-tax state can approach 37% or more on the capital gains portion alone, before adding depreciation recapture taxed at ordinary rates. State rules also vary on deductions, exclusions, and installment sale treatment, so the state analysis is a separate exercise.

Reporting the Sale and Paying Estimated Tax

You report the sale on IRS Form 8949, listing acquisition date, sale date, sale price, and adjusted basis. Totals flow onto Schedule D of Form 1040, where the capital gains liability is calculated.¹⁵ An asset sale also requires Form 8594 reporting the price allocation across asset classes.⁷

A large sale will almost certainly require estimated tax payments rather than waiting until April. The IRS imposes an underpayment penalty if you don’t pay enough throughout the year. Estimated payments are due April 15, June 15, September 15, and January 15 of the following year.¹⁶

To avoid the penalty, pay at least the lesser of 90% of the current year’s tax liability or 100% of the tax shown on the prior year’s return.¹⁶ If your adjusted gross income exceeded $150,000 in the prior year, that 100% figure jumps to 110%.¹⁷ Most sellers with a significant one-time gain make a large estimated payment in the quarter the sale closes rather than spreading it across four installments. The Electronic Federal Tax Payment System handles these payments and creates a clear record for your files.

1
Internal Revenue Service. Publication 551 – Basis of Assets
2
Internal Revenue Service. Publication 544 – Sales and Other Dispositions of Assets
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Internal Revenue Service. Topic No. 409, Capital Gains and Losses
4
Internal Revenue Service. Rev. Proc. 2025-32
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Office of the Law Revision Counsel. 26 USC 1245 – Gain From Dispositions of Certain Depreciable Property
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Office of the Law Revision Counsel. 26 U.S. Code 1060 – Special Allocation Rules for Certain Asset Acquisitions
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Internal Revenue Service. Instructions for Form 8594
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Internal Revenue Service. Sale of a Business
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Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax
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Internal Revenue Service. Passive Activity and At-Risk Rules
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Office of the Law Revision Counsel. 26 USC 453 – Installment Method
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Office of the Law Revision Counsel. 26 U.S. Code 453A – Special Rules for Nondealers
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Office of the Law Revision Counsel. 26 USC 1202 – Partial Exclusion for Gain From Certain Small Business Stock
14
Internal Revenue Service. Opportunity Zones Frequently Asked Questions
15
Internal Revenue Service. Instructions for Form 8949
16
Office of the Law Revision Counsel. 26 USC 6654 – Failure by Individual to Pay Estimated Income Tax
17
Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty