Tax Implications of Buying an Existing Business: Asset vs. Stock Purchase

By Yarik Yarosh, CPA ·September 5, 2026 ·6 min read

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

Buying an existing business creates immediate tax consequences that depend almost entirely on whether the transaction is structured as an asset purchase or a stock/membership interest purchase. In an asset purchase, the buyer acquires individual assets (equipment, inventory, customer lists, goodwill) and gets a stepped-up basis that can be depreciated or amortized. In a stock purchase, the buyer acquires the entity itself, inheriting the seller’s existing basis in assets (no step-up). For buyers, asset purchases are almost always better for tax purposes. For sellers, stock sales are often preferred. This tension is resolved through negotiation, and the purchase price allocation (reported on Form 8594) determines how each dollar of the purchase price is taxed to both parties.

✓Key takeaway

Business acquisition tax structure:

Asset purchase (buyer preferred):

Buyer acquires individual assets: equipment, inventory, real property, customer lists, non-competes, goodwill
Purchase price is allocated among the assets (Form 8594, using the residual method)
Buyer gets a stepped-up basis in every asset (basis = purchase price allocation)
Each asset class has its own depreciation/amortization schedule:
- Equipment: 5-7 year MACRS, eligible for bonus depreciation
- Real property: 39-year (commercial) or 27.5-year (residential rental)
- Inventory: becomes COGS when sold
- Customer lists, non-competes, goodwill: 15-year amortization (IRC 197)
Buyer does NOT assume the seller’s liabilities (unless specifically agreed)

Stock/interest purchase (seller preferred):

Buyer acquires the entity (corporation, LLC membership interests)
Buyer inherits the entity’s existing asset basis (NO step-up)
Buyer inherits ALL liabilities (known and unknown)
Tax benefit to seller: the entire gain is long-term capital gain (if held over 1 year)
Tax detriment to buyer: no new depreciation/amortization deductions
An IRC 338(h)(10) election can convert a stock purchase into a deemed asset purchase (giving the buyer step-up), but requires the seller to report as if assets were sold (ordinary income on some portion)

The purchase price allocation (Form 8594): The residual method allocates the purchase price in this order:

Class I: Cash and cash equivalents (at face value)
Class II: Actively traded securities (at market value)
Class III: Accounts receivable, mortgages, credit card receivables
Class IV: Inventory (at fair market value)
Class V: All other tangible and intangible assets not in other classes (equipment, real property)
Class VI: IRC 197 intangibles other than goodwill (customer lists, non-compete agreements, patents, franchises)
Class VII: Goodwill and going concern value (the residual, everything left over)

Buyer’s preference: allocate as much as possible to equipment (short depreciation + bonus) and as little to goodwill (15-year amortization). Allocation to inventory is neutral (deducted when sold).

Seller’s preference: allocate as much as possible to goodwill (capital gain, lower rate) and as little to equipment (ordinary income from depreciation recapture).

Non-compete agreement allocation:

Buyers want to allocate to non-competes: amortized over 15 years under IRC 197
Sellers: non-compete payments are ordinary income (not capital gains)
The allocation must reflect fair market value; inflating the non-compete to shift the allocation is a common audit issue

How does the purchase price allocation affect both parties?

Hypothetical example

Round numbers. A buyer acquires a plumbing business for $500,000. The business has $200,000 in annual revenue and $100,000 in annual profit. Single filer buyer.

Assets acquired:

Asset	FMV	Allocation	Depreciation/Amortization
Vehicles (2 service vans)	$40,000	$40,000	5-year MACRS, bonus eligible
Equipment and tools	$30,000	$30,000	7-year MACRS, bonus eligible
Inventory (parts)	$15,000	$15,000	COGS when sold
Customer list	$50,000	$50,000	15-year IRC 197
Non-compete agreement	$35,000	$35,000	15-year IRC 197
Trade name	$30,000	$30,000	15-year IRC 197
Goodwill (residual)	$300,000	$300,000	15-year IRC 197
Total		$500,000

Year 1 deductions for the buyer (asset purchase):

Asset Class	Amount	Year 1 Deduction
Vehicles (bonus depreciation)	$40,000	$40,000
Equipment (bonus depreciation)	$30,000	$30,000
Customer list (15-year, prorated)	$50,000	$3,333
Non-compete (15-year)	$35,000	$2,333
Trade name (15-year)	$30,000	$2,000
Goodwill (15-year)	$300,000	$20,000
Total Year 1		$97,666

Year 2+ annual amortization:

IRC 197 intangibles: ($50,000 + $35,000 + $30,000 + $300,000) / 15 = $27,667/year
No more equipment/vehicle depreciation (taken in Year 1)

Tax savings from the acquisition deductions:

Year 1: $97,666 x 33% = approximately $32,230
Years 2-15: $27,667 x 33% = approximately $9,130/year
Total tax savings over 15 years: $32,230 + ($9,130 x 14) = $160,050
The buyer recovers $160,050 of the $500,000 purchase price through tax deductions
After-tax cost of the business: $500,000 - $160,050 = $339,950

If this were a stock purchase (no step-up):

No bonus depreciation on vehicles/equipment (seller’s basis was near $0)
No amortization of goodwill (no new goodwill created in a stock purchase)
Year 1 deductions: approximately $0 from the acquisition
Total tax savings: approximately $0
After-tax cost: $500,000

The asset purchase saves the buyer approximately $160,050 in taxes over 15 years. This is why buyers strongly prefer asset purchases and why the purchase price negotiation often reflects this tax difference.

Seller’s tax treatment (asset sale):

Asset	Allocation	Seller’s Basis	Gain	Tax Character
Vehicles	$40,000	$5,000	$35,000	Ordinary (depreciation recapture)
Equipment	$30,000	$3,000	$27,000	Ordinary (depreciation recapture)
Inventory	$15,000	$12,000	$3,000	Ordinary
Customer list	$50,000	$0	$50,000	Capital gain
Non-compete	$35,000	$0	$35,000	Ordinary
Trade name	$30,000	$0	$30,000	Capital gain
Goodwill	$300,000	$0	$300,000	Capital gain
Total	$500,000	$20,000	$480,000

Ordinary income: $35,000 + $27,000 + $3,000 + $35,000 = $100,000 (taxed at up to 37%) Capital gain: $50,000 + $30,000 + $300,000 = $380,000 (taxed at 20% + 3.8% NIIT)

The seller’s tax on the sale: approximately $100,000 x 35% + $380,000 x 23.8% = $35,000 + $90,440 = $125,440.

In a stock sale: the entire $480,000 gain would be capital gain = $480,000 x 23.8% = $114,240. The seller saves approximately $11,200 with a stock sale structure.

Negotiation: the $160,050 tax benefit to the buyer in an asset purchase exceeds the $11,200 tax cost to the seller. In theory, they should agree to an asset purchase and split the difference through a price adjustment.

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

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Cite this page

Yarik Yarosh, CPA. "Tax Implications of Buying an Existing Business: Asset vs. Stock Purchase." Blue Cloud CPA, September 5, 2026. https://bluecloudcpa.com/guides/small-business-tax-implications-buying-existing-business

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