Selling Your Business: A Complete Tax Guide for Small Business Owners

By Yarik Yarosh, CPA ·September 5, 2026 ·Updated September 23, 2026 ·9 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

Selling a business is one of the most significant financial events in a business owner’s life, and the tax consequences can consume 25-40% of the proceeds if not planned carefully. The total tax depends on three variables: the entity type (which determines how many levels of tax apply), the deal structure (asset sale vs. stock/entity sale), and the character of the gain on each component (ordinary income vs. capital gains). A sole proprietor selling business assets pays tax once at individual rates. An S-Corp or partnership owner selling stock or interests pays tax once at individual rates (generally capital gains on goodwill). A C-Corp owner faces double taxation: the corporation pays tax on the asset sale, and the shareholder pays tax again when the after-tax proceeds are distributed as a liquidating dividend. The difference between a well-structured sale and a poorly structured one can easily be $100,000+ on a $1,000,000 transaction. The single most valuable step a seller can take is engaging a CPA before the letter of intent is signed, not after the deal closes.

✓Key takeaway

Tax on business sale by entity type:

Entity Type	Asset Sale Tax	Stock/Entity Sale Tax	Double Tax?
Sole proprietorship	Individual rates (ordinary on recapture, LTCG on goodwill)	N/A (no stock to sell)	No
Single-member LLC	Same as sole proprietorship	N/A (treated as disregarded entity)	No
Partnership / Multi-member LLC	Pass-through to partners (ordinary on hot assets, LTCG on goodwill)	Partners sell partnership interests (LTCG, except hot assets under IRC 751)	No
S-Corporation	Pass-through to shareholders (ordinary on recapture, LTCG on goodwill)	Shareholders sell stock (all LTCG)	No
C-Corporation	Corporate tax (21%) on asset gain, THEN shareholder tax on liquidating distribution	Shareholders sell stock (all LTCG, no corporate-level tax)	Yes (asset sale) / No (stock sale)

Gain character by asset type:

Asset	Tax Character	Rate
Inventory	Ordinary income	Up to 37%
Accounts receivable (cash-basis)	Ordinary income	Up to 37%
Equipment (depreciation recapture, IRC 1245)	Ordinary income	Up to 37%
Real property (unrecaptured 1250 gain)	Unrecaptured Section 1250	Up to 25%
Customer lists	LTCG (if held >1 year)	20% (+ 3.8% NIIT unless the owner is active)
Goodwill	LTCG	20% (+ 3.8% NIIT unless the owner is active)
Going concern value	LTCG	20% (+ 3.8% NIIT unless the owner is active)
Covenant not to compete	Ordinary income	Up to 37%

Tax-saving strategies for sellers:

Strategy	How It Helps	IRC Section
Installment sale	Spreads gain over payment years, may keep seller in lower brackets	453
QSBS exclusion	Excludes up to $10 million ($15 million for stock acquired after July 4, 2025), or 10x basis if greater, of gain on qualifying C-Corp stock	1202
Opportunity zone reinvestment	Defers gain by investing in a qualified opportunity fund	1400Z-2
Charitable remainder trust	Avoids capital gains, creates income stream, charitable deduction	664
1031 exchange (real property only)	Defers gain on real property component	1031
S-Corp election before sale	Avoids C-Corp double taxation (but 5-year built-in gains tax)	1374
Allocate more to goodwill (LTCG)	Shifts purchase price from ordinary income to capital gains	Negotiation
Maximize retirement contributions pre-sale	Reduces taxable income in the year of sale	401(k), defined benefit

What does the tax bill look like by entity?

Hypothetical example

Round numbers. A business with $2,000,000 in sale proceeds. Owner’s basis: $400,000. The 23.8% figures assume the 3.8% NIIT applies; a sole proprietor, partner or S-Corp owner active in the business may owe little or none of it. The purchase price is allocated as follows:

Asset	Allocated Price	Basis	Gain	Character
Inventory	$100,000	$80,000	$20,000	Ordinary
Equipment	$200,000	$50,000	$150,000	Ordinary (recapture)
Customer list	$200,000	$0	$200,000	LTCG
Non-compete	$100,000	$0	$100,000	Ordinary
Goodwill	$1,400,000	$0	$1,400,000	LTCG
Total	$2,000,000	$130,000	$1,870,000	Mixed

(Note: owner’s stock basis of $400,000 includes $270,000 in previously taxed retained earnings for pass-throughs.)

Sole Proprietorship / S-Corp (asset sale, pass-through):

Income Type	Amount	Tax Rate	Tax
Ordinary income (inventory + recapture + non-compete)	$270,000	35% (blended)	$94,500
LTCG (customer list + goodwill)	$1,600,000	23.8% (20% + 3.8% NIIT)	$380,800
Total federal tax			$475,300
After-tax proceeds			$1,524,700
Effective tax rate			23.8%

S-Corp (stock sale, all LTCG):

Income Type	Amount	Tax Rate	Tax
LTCG (stock sale: $2,000,000 - $400,000 basis)	$1,600,000	23.8%	$380,800
Total federal tax			$380,800
After-tax proceeds			$1,619,200
Effective tax rate			19.0%

The S-Corp stock sale saves $94,500 vs. the asset sale because all gain is LTCG (no ordinary income on recapture or non-compete).

C-Corp (asset sale, double taxation):

Level	Income	Tax Rate	Tax
Corporate: ordinary income	$270,000	21%	$56,700
Corporate: LTCG	$1,600,000	21%	$336,000
Corporate total tax			$392,700
After-tax at corporate level	$2,000,000 - $392,700		$1,607,300
Liquidating distribution to shareholder	$1,607,300
Shareholder basis in stock	$400,000
Shareholder gain	$1,207,300	23.8%	$287,337
Total tax (corporate + shareholder)			$680,037
After-tax proceeds			$1,319,963
Effective tax rate			34.0%

C-Corp (stock sale, single level):

Income Type	Amount	Tax Rate	Tax
LTCG (stock: $2,000,000 - $400,000 basis)	$1,600,000	23.8%	$380,800
Total federal tax			$380,800
After-tax proceeds			$1,619,200
Effective tax rate			19.0%

Summary comparison:

Entity / Structure	Total Tax	After-Tax	Effective Rate
Sole prop / S-Corp asset sale	$475,300	$1,524,700	23.8%
S-Corp stock sale	$380,800	$1,619,200	19.0%
C-Corp asset sale (double tax)	$680,037	$1,319,963	34.0%
C-Corp stock sale	$380,800	$1,619,200	19.0%
C-Corp QSBS stock sale (if eligible)	$0	$2,000,000	0%

The C-Corp asset sale costs $299,237 MORE than the stock sale ($680,037 vs. $380,800). This is the double taxation problem. The C-Corp with QSBS eligibility pays $0 in tax, making it the most favorable outcome of all.

The IRC 338(h)(10) election (S-Corp and subsidiary targets): When a buyer insists on asset-sale treatment, the IRC 338(h)(10) election treats a stock purchase as a deemed asset purchase for tax purposes. It’s available only if the target is an S-Corp or a subsidiary sold by a consolidated group or affiliate, not a C-Corp owned by individuals:

Effect	Buyer	Seller
Tax treatment	Asset purchase (stepped-up basis, fresh depreciation)	Deemed sale of the target’s assets, then a deemed liquidation; the stock sale itself isn’t taxed
Purchase price allocation	Yes (IRC 1060, 7 asset classes)	Yes (the deemed sale price is allocated across the same classes)
Double taxation	Eliminated	N/A

This election requires both buyer and seller to agree and jointly file Form 8023.

Illustrative numbers only, not a real client and not advice for your facts.

Can I spread the gain from a business sale over multiple years?

If the buyer pays in installments, you can report the gain proportionally under IRC 453 as you receive each payment. The installment method applies automatically to any sale where at least one payment is received after the tax year of the sale. Each payment consists of three components: return of basis (tax-free), gain (taxed at capital gains rates), and interest income (taxed as ordinary income). Dealer dispositions, sales of inventory, and sales of depreciable property to a related party don’t qualify for installment treatment. If you elect out of the installment method (by reporting the full gain in the year of sale), you cannot reverse that election without IRS consent.

How does choosing the wrong entity structure affect my taxes?

The wrong entity can cost thousands in unnecessary taxes annually. A sole proprietor earning $120,000 pays roughly $17,000 in self-employment tax; an S-Corp paying a $70,000 reasonable salary saves approximately $7,650 in FICA on the remaining $50,000. Conversely, an S-Corp for a business earning $40,000 creates more compliance cost (payroll, separate return) than the FICA savings justify. A C-Corp creates double taxation on distributions unless the owner takes all profits as salary, which maximizes FICA. Switching later is possible but can trigger tax consequences: converting a C-Corp to an S-Corp subjects built-in gains to a 5-year recognition period.

Related guides:

Does a C-Corp pay a lower rate on capital gains?

No. A C corporation pays a flat 21% on its taxable income, and its gains are taxed at that same 21%. The 0%, 15% and 20% long-term rates are for individuals, trusts and estates, so a C-Corp asset sale is taxed at 21% on the gain before any money reaches the owner.

Corporate capital losses are more limited too. A C corporation can use them only against capital gains, with no $3,000 offset against other income, and a net capital loss carries back three years and forward five. Owners who sell their shares instead are taxed as individuals: stock held more than one year gets long-term rates, with the 20% rate starting above $600,050 of joint taxable income for 2025 and $613,700 for 2026.

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Cite this page

Yarik Yarosh, CPA. "Selling Your Business: A Complete Tax Guide for Small Business Owners." Blue Cloud CPA, September 5, 2026, updated September 23, 2026. https://bluecloudcpa.com/guides/small-business-tax-implications-selling-business-owner-guide

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.