For founders and investors, Section 1202 — the Qualified Small Business Stock (QSBS) exclusion — can eliminate some or all federal income tax on the gain recognized from the sale of qualifying stock. But in an M&A transaction, it is surprisingly easy to inadvertently lose this valuable benefit.
“Section 1202 is highly technical and the tax consequences of any transaction depend on the specific structure involved,” says Kristin Krabacher, Shareholder at Brady Ware. “Founders, investors and management should evaluate QSBS implications early in the sale process to avoid inadvertently forfeiting valuable tax benefits.”
Smart Business spoke with Krabacher about the core considerations governing QSBS preservation during M&A transactions.
How is QSBS tax status affected by a stock-for-stock transaction?
If a buyer is offering stock consideration instead of cash, QSBS benefits may still be preserved, but careful analysis is required. A stock-for-stock transaction does not automatically eliminate QSBS benefits, but it can’t be assumed the buyer’s stock will carry the same QSBS result. In many qualifying reorganizations where the replacement stock does not itself qualify as QSBS, the Section 1202 benefit may effectively be preserved only with respect to the built-in gain existing at the time of the exchange. When the new stock is eventually sold, the gain locked in up to the merger date stays tax-free. But any growth that happens after the merger gets hit with standard capital gains taxes. Conversely, if the company stock exchanged qualifies as QSBS, the whole thing rolls over beautifully. The holding period keeps ticking right along, and future growth qualifies for the QSBS gain exclusion.
How do legislative changes affect the QSBS during an M&A exit?
It all comes down to a single question: When exactly was the stock received? Because the rules changed in mid-2025, there are now two completely different sets of rules governing exits. If the stock was issued on or before July 4, 2025, it’s under the legacy rules, which generally operate on an all-or-nothing basis. The stock must be held for more than five years to get a dime of tax relief, capped at a $10 million lifetime exclusion. Close the M&A deal at four years and 11 months, and none of the gain qualifies for the Section 1202 exclusion. If the stock was issued after July 4, 2025, the rules are significantly more favorable. The lifetime cap bumps up to $15 million and it’s on a graduated timeline. The stock only has to be held for three years to exclude 50 percent of the gains, four years for 75 percent, and five years for the full 100 percent.
How do deal structures influence shareholder eligibility for tax exclusions?
If a buyer proposes an asset purchase agreement, QSBS benefits may be significantly reduced or eliminated. To claim this tax exclusion, the deal must be a stock sale. Buyers often prefer asset acquisitions because they can avoid certain legacy liabilities and obtain a stepped-up basis in the acquired assets. But Section 1202 explicitly says the shareholder has to sell stock. In an asset deal, the company is the entity selling its assets, and the Section 1202 exclusion generally applies to shareholders who dispose of qualifying stock, not to corporations selling assets. By the time the company takes that cash, pays a 21 percent federal corporate tax bill, and distributes what’s left in a liquidation, the tax savings have evaporated. Those with valuable QSBS need to be firm and negotiate a stock purchase agreement.
Additionally, people assume the QSBS clock starts ticking the day they sign a SAFE, get a convertible note, or get granted stock options. It doesn’t. For Section 1202 purposes, the holding period generally begins when qualifying stock is actually issued. If a company gets acquired and those SAFEs or options convert directly into cash or buyer stock at closing, the holding period for those specific shares of equity is exactly zero days: there is no exclusion. Those eyeing an exit down the road have to plan years ahead. Exercise those options or trigger those SAFE conversions early to get the clock moving. ●
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