ANALYSIS · Capital

Selling a Business: The Tax Implications Hidden in the Deal Structure

How the IRS treats an exit depends on whether assets or stock change hands, how the price is allocated, when the money arrives, and who the buyer is.

Rendal Post Analysis Desk · Published October 2, 2026

The IRS guidance on the sale of a business opens with a plain warning: "The sale of a business usually is not a sale of one asset." In our reading, that sentence is the thesis for anyone planning an exit: the after-tax result turns not only on the headline price but on how the deal is built, whether the buyer takes assets or stock, how the price is split among those assets, when the money arrives, and who the buyer is.

Assets or stock

When a business sells its assets, the IRS says each asset is generally treated as sold separately when working out gain or loss, and each must be sorted into a class. The agency's classes are capital assets, depreciable or real property the business uses, and property held for sale to customers, such as inventory. According to the IRS page, capital assets produce capital gain or loss, business real or depreciable property held longer than 1 year produces gain or loss from a section 1231 transaction, and inventory produces ordinary income or loss.

Selling an ownership interest works differently. The IRS says that when an owner sells stock certificates representing an interest in a corporation, the seller usually realizes capital gain or loss. A partnership interest is also treated as a capital asset when sold, with an exception the agency spells out: the portion of gain or loss tied to unrealized receivables or inventory items is treated as ordinary. In our reading, the choice between an asset deal and a stock deal therefore shapes the character of the gain, not only the paperwork.

How the price gets split

In an asset sale, the price split follows a formula. When a group of assets makes up a trade or business and the buyer's basis rests only on the price paid, the IRS requires buyer and seller alike to apply the residual method when dividing the consideration among the assets, setting aside assets swapped under nontaxable exchange rules. The method first reduces the consideration by cash and general deposit accounts, then assigns what remains to the other business assets in a set order.

Publication 537, the IRS guide to installment sales, in the edition we reviewed, listed that order for asset acquisitions after March 15, 2001: first come certificates of deposit, foreign currency, U.S. government securities and personal property that is actively traded, followed by accounts receivable, other debt instruments and assets marked to market at least annually, then inventory-type property, then all other assets except section 197 intangibles, then those intangibles other than goodwill, and finally goodwill and going concern value. Each class takes value in proportion to, but not more than, fair market value on the purchase date. The same publication says the buyer and seller may sign a written agreement on the allocation, which binds both parties unless the IRS determines the amounts are not appropriate, and that both must report the allocation on Form 8594 with their returns for the year of the sale.

The practical weight of this shows up in the publication's worked example, in which a seller sold a machine shop on June 4, 2025 for a total price of $220,000. The listed assets had a combined fair market value of $201,500, and the remaining $18,500 was allocated to goodwill.

Capital gains rates and their limits

For individuals, the rate on long-term capital gain depends on taxable income. The IRS defines long-term generally as an asset held for more than one year before disposal. Its Topic 409 page, in the version we read, set out the brackets for taxable years beginning in 2025: for individuals, the 0% capital gains rate applied when taxable income was at or below $48,350 for single filers and $96,700 for married couples filing jointly; the 15% rate applied when taxable income was above those levels up to $533,400 and $600,050, respectively; and 20% applied to the extent taxable income exceeded the 15% thresholds.

The same page said the taxable part of gain from selling section 1202 qualified small business stock was taxed at a maximum 28% rate, and that the unrecaptured portion of gain on section 1250 real property faced a maximum rate of 25%.

Founder stock under the new law

Individual and other non-corporate owners of C corporation stock face a separate question: whether their shares qualify as qualified small business stock under section 1202. A Greenberg Traurig alert from July 2025 described how H.R. 1, signed on July 4, 2025, changed that regime, generally for stock acquired after that date. Under the alert's summary, holders of such stock could exclude up to 50% of the gain after at least three years, 75% after at least four years, and 100% after at least five years. Per the same alert, stock acquired on or before July 4, 2025, stayed under the prior rules, with no partial exclusion.

The alert said the per-issuer cap on excluded gain rose to the greater of $15 million, with inflation indexing to begin after 2026, or 10 times the aggregate adjusted basis, up from $10 million under the old law. The gross-asset threshold for qualified small business status rose from $50 million to $75 million. The firm calculated effective federal rates of 15.9% and 7.95% on gain under the 50% and 75% partial exclusions, respectively, treating the non-excluded gain as taxed at 28% plus the 3.8% net investment income tax. To qualify, the alert said, the stock must generally have been acquired at original issuance in exchange for money, other property (not stock) or services, and the corporation must meet certain active business and asset thresholds. In our reading, that makes the acquisition date of each founder's shares one of the first facts to pin down before an exit.

Taking payment over time

The IRS defines an installment sale as one where at least one payment arrives in a tax year later than the year of the sale, and says the seller may be able to report part of the gain as each payment comes in. The publication sets limits that matter for a business sale. "You can’t use the installment method to report a loss," Publication 537 states. The publication also bars inventory sales from the installment method, so gain or loss on inventory is reported in the year of sale even when payment comes later.

Depreciation recapture has a similar carve-out. According to the publication, a seller of property on which depreciation was claimed, or could have been, has to report recapture income as ordinary income in the sale year, even in a year with no installment payment, and only gain above the recapture amount goes on the installment method. In our reading, a buyer's note defers tax only on the gain left after recapture, inventory and the other ineligible classes are carved out.

Selling to employees

For owners of non-publicly traded C corporations, a sale to an employee stock ownership plan opens a deferral the RSM US FAQ describes under section 1042. As RSM US described the rule, a qualifying individual, partnership, estate or trust selling shares may elect not to pay income tax on recognized capital gains from selling stock of a non-publicly traded C corporation to an ESOP, if the ESOP owns at least 30% of the company after the sale and the proceeds are reinvested in qualifying replacement securities between three months before and 12 months after the sale. The FAQ adds that the seller must have held the shares for three years or more and must not have obtained them through an employer plan or an option agreement, and that, beginning in 2028, S corporation stock may qualify for up to 10% of the gain.

The FAQ said the most an ESOP can pay is fair market value set by an independent appraisal, and that a third-party buyer may be willing to offer more. In a hypothetical, it showed an owner whose stock had a $100,000 basis and a $2 million value deferring roughly $380,000 in tax by electing section 1042, while noting that the deferral is generally a temporary benefit. The firm advised that shareholders "should generally base decisions about business sales on after-tax rather than pre-tax cash flows," a point it said matters even more when weighing the election.

What to do with this

In our reading, the sources point to a sequence an owner can start well before a buyer appears. First, establish whether the likely deal is an asset sale or a stock sale, because the IRS treats them differently. Second, list the assets by class and estimate where the price would fall under the residual method, since Publication 537 keeps inventory and the recapture portion of the gain out of installment treatment. Third, if the company is a C corporation, confirm when and how each owner acquired the shares, because the section 1202 rules Greenberg Traurig summarized turn on those facts. Fourth, if employees are a plausible buyer, test whether the company and each selling owner meet the section 1042 conditions RSM US laid out. Throughout, compare offers after tax, as RSM US recommends.

This article is for general information and is not tax or legal advice. Consult a qualified tax professional before making decisions.