Asset Sale vs Stock Sale: Who Wins on Tax and How the Gap Gets Paid

What actually changes hands

In a stock sale (or a sale of LLC membership interests) the buyer steps into your shoes: same legal entity, same contracts, permits, bank accounts, employees and tax history, including any liabilities nobody has found yet. In an asset sale the company sells chosen assets to the buyer's new entity, the buyer assumes only the liabilities it agrees to, and your old company is left holding the cash, the excluded assets and the rest of the obligations until you wind it down.

Why the buyer pays for the step-up

A buyer of assets gets a fresh basis equal to what it paid. Used equipment bought from an unrelated seller can qualify for 100% bonus depreciation, which P.L. 119-21 made permanent under IRC 168(k) (2025), and goodwill and other Section 197 intangibles are amortized over 15 years. A stock buyer inherits the company's old basis instead: if you already depreciated the trucks to zero and the goodwill was self-created, the buyer gets almost no write-offs from a stock deal. That future tax shield is real money to a buyer, which is why the request for an asset purchase is often a pricing conversation in disguise.

The seller's side depends on the entity

• C corporation: the widest gap. An asset sale is taxed at 21% inside the company (IRC 11(b), 2026) and again when proceeds are distributed; a stock sale has one shareholder-level tax. Details on our C corporation double tax page.
• S corporation: one layer either way, but the character differs. A stock sale is capital gain on the shares; there is no rule for S corporations like the partnership hot-asset rule, so depreciation that would be recaptured in an asset sale comes out as capital gain. An asset sale passes the recapture through as ordinary income.
• Partnership or multi-member LLC: the gap is small. Selling your interest still triggers IRC 751, which taxes your share of receivables, inventory and recapture as ordinary income, much as an asset sale would.
• Sole proprietorship: there is no stock, so every sale is an asset sale.

For the asset-by-asset rules themselves, see capital gains tax on the sale of a business.

Measuring and pricing the gap

Our three engine runs use the same S corporation and the same $5,000,000 gain. Selling the stock produces $1,211,847 of tax. Selling the assets at the same price produces $1,298,783, because $750,000 of the gain is now ordinary recapture instead of capital gain: the asset sale costs the owners $86,936. North Carolina taxes both at its flat 3.99% (G.S. 105-153.7, 2026), so here the whole difference is federal.

The usual fix is a gross-up: the buyer raises the price enough that the seller nets the same after tax. Because the extra dollars are taxed too, the gross-up must exceed the gap. In the third run a $115,000 increase leaves the owners with $3,788,629 after tax, against $3,788,153 in the stock sale. The buyer agrees if the present value of the extra depreciation exceeds $115,000, which with 100% bonus depreciation on $750,000 of equipment it often does. Ask for the gross-up in the letter of intent, before exclusivity removes your leverage.

Stock on paper, assets for tax: 338(h)(10), 336(e) and the F reorganization

Three tools let the legal deal stay a stock sale while the tax result becomes an asset sale, so the buyer gets its step-up and the seller keeps contract continuity:

• Section 338(h)(10): a corporate buyer makes a qualified stock purchase (at least 80%) of an S corporation or a corporate subsidiary, and buyer and sellers jointly elect. The target is treated as selling its assets and liquidating. See our 338(h)(10) analysis.
• Section 336(e): similar deemed asset sale treatment, but the election is made by the sellers and the buyer need not be a corporation (Treas. Reg. 1.336-1), useful when a private equity fund buys through a partnership.
• F reorganization: the owners form a new S corporation holding company, make the old company a qualified subchapter S subsidiary and convert it to an LLC, then sell LLC interests. Rev. Rul. 2008-18 holds the S election carries over to the new parent. The buyer is buying a disregarded entity, which is an asset purchase for tax.

All three hand the seller asset-sale character, so the gross-up math above still applies.

Built-in gains: the S corporation that used to be a C corporation

If your company converted from C to S status, IRC 1374 taxes the built-in gain that existed at conversion at the top corporate rate of 21% (IRC 11(b), 2026) when assets are sold within the 5-year recognition period that starts on the first day of the first S year. An asset sale, a 338(h)(10) or an F reorganization inside that window can bring back a corporate-level tax; a plain stock sale does not, because the corporation sells nothing. If the period ends in a few months, timing the closing can be worth more than any price term. Installment payments on an asset sold within the window stay subject to the tax as collected (IRC 1374(d)(7)(B)).

QSBS only rewards a stock sale

Section 1202 excludes gain on qualified small business stock: stock of a C corporation issued to you at original issue. For stock acquired after July 4, 2025 the exclusion is 50% after 3 years, 75% after 4 and 100% after 5, up to $15,000,000 per issuer (IRC 1202 as amended by P.L. 119-21, 2025). It applies only when shareholders sell stock. If the corporation sells its assets, the company pays the 21% corporate tax and the exclusion never comes into play. Founders holding qualifying stock have a strong reason to insist on a stock sale; see QSBS and Section 1045.

Either deal type can be paired with seller financing for the capital portion; see the installment sale of a business analysis. To compare both deal types with your own numbers, get the Big Sale Tax Analysis.

Run your own numbers

Frequently asked questions