Asset Sale vs Stock Sale Calculator: 2026 After-Tax Comparison

The choice between an asset sale and a stock sale is the most consequential structural decision in your exit. On a $12M deal, the difference can exceed $1.5M in after-tax proceeds — entirely from how your gain is characterized, not from the deal price itself. Enter your numbers below to see the side-by-side comparison.

What drives the structure gap

In a stock sale, the entire gain — regardless of what the business owns — is one thing: long-term capital gain on your equity interest. In 2026, that's taxed at a maximum federal rate of 23.8% (20% LTCG + 3.8% NIIT) plus state tax.¹

In an asset sale, the IRS looks inside the business and taxes different assets differently:

Sources: IRS Publication 544 (Sales and Other Dispositions of Assets); IRC §§1245, 1250, 1(h).² Ordinary income rates per IRS Rev. Proc. 2025-32.³

The structure gap is largest when:

• The business has significant equipment that's been depreciated (large §1245 recapture)
• The buyer insists on a large covenant not to compete allocation
• The state taxes ordinary income at a higher rate than capital gains (most do)
• It's a C-corp — where an asset sale triggers corporate-level tax at 21% before the shareholder-level LTCG on the liquidating distribution

Why buyers prefer asset sales

The buyer's preference is the mirror image of the seller's pain. When a buyer purchases assets, they get a stepped-up basis in those assets equal to the purchase price. That higher basis generates larger depreciation deductions over the coming years — which reduces their tax bill. A buyer who pays $12M for a software company and gets to depreciate $10M in software/IP (15-year amortization under §197) saves roughly $3–4M in taxes over the amortization period versus a stock purchase at carryover basis.

This is why asset deals are common in acquisitions by larger companies and PE buyers with large tax appetites, and stock deals are more common in strategic acquisitions where the buyer values contracts and permits that don't transfer in an asset deal.

Negotiating the structure premium

A stock sale costs the buyer more in after-tax terms (they lose the stepped-up basis benefit). In competitive situations, sellers can negotiate a price premium that partially compensates the buyer for accepting a stock deal. The math:

• Buyer's lost step-up benefit (PV of future depreciation lost) = roughly 15–25% of the asset purchase price, depending on how depreciation-heavy the asset mix is and the buyer's discount rate
• Seller's tax savings from stock vs asset = the structure gap your calculator just produced
• If seller's gain > buyer's loss, there's a deal to be had where both sides come out ahead

A tax-aware M&A advisor models this precisely. The negotiation is usually framed as "grossing up" the stock sale price to make the buyer whole on lost depreciation benefit.

The §338(h)(10) hybrid election

For C-corp acquisitions, §338(h)(10) allows the buyer and seller to jointly elect to treat a stock sale as an asset sale for tax purposes — the target company pays corporate-level tax on a deemed asset sale, but the seller avoids the second layer of shareholder-level tax on a liquidating distribution. The result: buyer gets step-up, seller pays only one level of tax. This is typically better than a standard C-corp asset sale (which triggers double tax) but worse than a clean C-corp stock sale. The election requires consent from both parties.

When an asset sale might make sense for the seller

Stock sales are almost always better for sellers on a pure tax basis — except in a few specific situations:

• Undisclosed liabilities: Buyers of stock inherit all liabilities, including contingent ones (lawsuits, tax deficiencies, environmental claims). Buyers will accept stock deals only with extensive representations and warranties — and may require escrow holdbacks that effectively reduce your net proceeds anyway.
• When goodwill is minimal: If your business is mostly hard assets (manufacturing equipment, real estate, inventory), the stock/asset gap is smaller because most gain is capital gain regardless. A pure goodwill service business has the largest gap.
• Seller financing: Some buyers will offer better installment sale terms (larger down payment, higher rate) in an asset deal to compensate. The calculator above doesn't model time-value of installment payments — that's a separate analysis.