In a stock sale, the buyer purchases shares of your company, which is often preferable for sellers due to lower capital gains tax rates and potential QSBS benefits. However, stock sales may expose you to lingering liabilities. In a asset sale, the buyer purchases individual business assets, which can lead to higher taxes for the seller and may be complex, but buyers prefer asset sales for tax advantages and reduced risk of liabilities.
The choice between a stock sale and an asset sale is important and has different impacts for you as the seller and the buyer.
In a stock sale, the buyer purchases the shares of your existing legal entity. Sellers generally prefer stock sales because the proceeds are taxed at capital gains rates, which can be lower than ordinary income rates. A stock sale may also qualify for the Qualified Small Business Stock (QSBS) tax break, potentially excluding up to $10 million or 10 times the original investment in capital gain from federal tax. However, stock sales can expose you to more liability, as issues stay with the company unless otherwise specified in the sale agreement. Buyers in a stock sale do not get a "step-up" in basis, and also accept more risk of unknown liabilities.
On the other hand, in an asset sale, the buyer purchases the individual assets of your business. Asset sales can generate higher taxes for you as a seller, because some assets may be subject to ordinary income tax rates and sales tax. If your business is a C-corp, you may also face double taxation. However, buyers often prefer asset sales because they can "step-up" the basis of assets, providing a tax benefit. They also avoid inheriting potential liabilities and have a clear breakdown of what they are buying. Asset sales tend to be more complex and expensive, with higher fees for appraisals, legal titling and accounting.
Entity type changes the math. A C corporation that sells assets pays a 21% federal corporate tax on the gain, then the shareholders pay tax again on the distribution. A stock sale of that C corporation is taxed once, at the shareholder level, and is the only path to the QSBS exclusion. Pass-through entities (S corporations, partnerships, and most LLCs) have one layer of tax. An asset sale or a stock sale both flow through to the owners. The mix of ordinary income and capital gain still differs.
QSBS is narrower than a generic stock sale. The company must be a domestic C corporation. For stock issued after July 4, 2025, the per-issuer exclusion is the greater of $15 million or 10 times basis, and a partial exclusion starts at a three-year hold: 50% at three years, 75% at four, and 100% at five. Stock issued on or before that date keeps the older $10 million cap and the five-year hold.
Parties sometimes keep the legal form of a stock purchase and elect to treat it as an asset sale for tax. A section 338(h)(10) election can do that for an S corporation or a corporate subsidiary. It is not available when individuals sell a stand-alone C corporation.
Which structure is better for you depends on entity type, basis, recapture, state tax, QSBS eligibility, and how much of a price concession the buyer demands for a stock deal. Run both models before you concede the point in the letter of intent.