For founders who have built and are now selling a business, the tax implications of the sale can be as significant as the headline purchase price. The difference between careful pre-sale tax planning and an unplanned exit can be tens of millions of dollars in avoidable tax. The three most powerful tax planning tools available to founders selling their companies are the Qualified Small Business Stock (QSBS) exclusion under Section 1202, the installment sale election under Section 453, and the strategic use of deal structure to optimize the character of the gain. Each of these tools has specific requirements and limitations that must be understood well before a sale process begins.
Section 1202: The QSBS Exclusion
Section 1202 of the Internal Revenue Code allows non-corporate taxpayers (individuals, trusts, and estates) to exclude from gross income up to 100 percent of the gain from the sale of Qualified Small Business Stock (QSBS) if the stock satisfies all applicable requirements. For founders who hold QSBS that qualifies for the full exclusion, the federal income tax savings can be extraordinary — for a founder who sells $50 million of QSBS, the exclusion eliminates what would otherwise be approximately $12 million in federal capital gains tax.
For stock to qualify as QSBS, several requirements must be satisfied. The issuing corporation must be a domestic C corporation at the time of issuance and at all times during the taxpayer’s holding period. The aggregate gross assets of the corporation (including any predecessor entities and companies under common control) must not have exceeded $50 million at any time before or immediately after the issuance of the stock. The stock must be acquired at original issuance in exchange for money, property, or services — not purchased in a secondary market transaction. The taxpayer must hold the stock for more than five years. And the corporation must be an active business in a qualified trade or business at the time of issuance and substantially all of the time during the holding period (at least 80 percent of assets must be used in qualified trade or business activities).
Qualified trades or businesses for QSBS purposes exclude a number of service-oriented industries, including any trade or business involving the performance of services in the fields of health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, and brokerage services, as well as businesses whose principal asset is the reputation or skill of its employees. Technology, software, manufacturing, retail, food and beverage, and most other commercial businesses do qualify. The exclusion amount is the greater of $10 million (reduced by the amount of QSBS gain excluded in prior years) or 10 times the taxpayer’s adjusted basis in the stock disposed of during the year.
QSBS Stacking Strategies
The $10 million exclusion cap is a per-taxpayer limitation, which creates planning opportunities for founders with spouses, family members, trusts, and other related parties. Because each taxpayer has a separate $10 million exclusion cap, transferring QSBS to multiple family members (through gifts) or to trusts for the benefit of family members (irrevocable trusts are treated as separate taxpayers for Section 1202 purposes) before a sale can multiply the available exclusion. A founder who transfers QSBS to an irrevocable trust for the benefit of each of his or her children, for example, creates separate exclusion caps for each trust.
QSBS stacking strategies require careful execution. The transfers must be completed before the company has a letter of intent or is in an advanced sale process, because transfers made when a sale is imminent or certain may be characterized as taxable under the anticipatory assignment of income doctrine. The five-year holding period restarts for any QSBS acquired in a conversion from LLC to C corporation status, so timing of entity conversion is also important. The IRS has not provided extensive guidance on QSBS stacking, and practitioners should monitor developments carefully.
Many states do not conform to the federal Section 1202 exclusion, which means that even if federal income tax is entirely eliminated by the QSBS exclusion, state income tax may still be owed. California, for example, does not allow the Section 1202 exclusion for California income tax purposes, which can result in a significant state tax liability even when the federal tax is zero. Founders in high-income-tax states should carefully model the state tax consequences of their QSBS exclusion planning.
The Installment Sale Election
An installment sale is a disposition in which at least one payment is received after the close of the taxable year of the sale. Under Section 453 of the Code, sellers who receive installment payments — including promissory notes from buyers — may elect to report their gain ratably as payments are received, rather than recognizing all gain in the year of the sale. The installment method defers the recognition of gain and the associated tax liability to future years when the payments are actually received, providing a cash flow benefit to the seller and effectively deferring the tax bill.
The installment sale election is most commonly available when the seller receives a promissory note as part of the consideration. It is not available for sales of publicly traded property or for certain contingent payment arrangements. The seller must report a proportionate share of gain with each installment payment received, calculated based on the gross profit ratio (the ratio of total gain to total contract price). Interest income on the note is taxable separately as ordinary income.
The installment method has risks that sellers should understand. If the buyer defaults on the note, the seller may have recognized gain in prior years on payments it ultimately did not receive, requiring amended returns or bad debt deduction claims to recover the over-paid tax. The present value of the tax deferral must be weighed against the credit risk of the buyer. Additionally, if the seller dies holding an installment obligation, the unreported gain is accelerated and recognized at death in the seller’s estate, which can create complex planning issues.
Deal Structure and Tax Character
As discussed in other articles on this website, the character of the gain recognized in a sale transaction — whether it is capital gain or ordinary income, and whether it qualifies for a Section 1202 exclusion — depends heavily on the deal structure. A stock sale produces capital gain on the sale of stock; an asset sale produces gain that is characterized based on the nature of each asset sold. A Section 338(h)(10) election converts a stock sale into a deemed asset sale for tax purposes, which can change the character of some of the gain from capital gain to ordinary income.
For founders who have carefully planned their QSBS positions and who are seeking maximum exclusion benefit, maintaining stock sale treatment is critical, because the QSBS exclusion applies to gain from the sale of stock, not from the deemed sale of assets. A Section 338(h)(10) election that converts stock sale treatment to asset sale treatment may eliminate the QSBS exclusion for the portion of the gain attributable to the deemed asset sale. This is a critical interaction that must be analyzed before agreeing to any deemed asset sale election.
The tax planning available to founders selling their companies is among the most impactful financial planning they will do in their lives. QSBS planning, installment sale structuring, and deal structure optimization should all be evaluated with qualified tax counsel at least 12 months before any contemplated transaction, and ideally earlier. The planning opportunities available with adequate lead time are significantly greater than those available when a sale process is already underway, making early engagement with tax advisors one of the most financially valuable investments a founder can make.