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

By Yarik Yarosh, CPA ·September 5, 2026 ·7 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	25%
Customer lists, non-compete agreements	LTCG (if held >1 year)	20% + 3.8% NIIT
Goodwill	LTCG	20% + 3.8% NIIT
Going concern value	LTCG	20% + 3.8% NIIT
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 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 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 (C-Corp compromise): When a buyer insists on asset-sale treatment but the target is a C-Corp, the IRC 338(h)(10) election treats a stock purchase as a deemed asset purchase for tax purposes:

Effect	Buyer	Seller
Tax treatment	Asset purchase (stepped-up basis, fresh depreciation)	Stock sale (single level of tax at shareholder level)
Purchase price allocation	Yes (IRC 1060, 7 asset classes)	N/A (receives stock sale proceeds)
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.

Want this checked against your own situation?

Start with a Diagnostic: a CPA licensed in the US and Canada reads your file and answers in writing, three to four business days after you finish the questions. $250 for cross-border, $195 for a second opinion on a filed return, and it comes straight off the bill if we do the work after. Or book a free 15-minute fit call first.

Start a Diagnostic →Book a free call

Get the next cross-border guide by email

One or two plain-English guides a week on US-Canada tax. No spam, unsubscribe anytime.

Cite this page

Yarik Yarosh, CPA. "Selling Your Business: A Complete Tax Guide for Small Business Owners." Blue Cloud CPA, September 5, 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.