With how significant the QSBS tax benefit can be, it is increasingly common for owners and shareholders of companies that do not yet have qualifying stock to reorganize their business ahead of a future liquidity event. This is especially common for established, closely held, or legacy family businesses that were originally set up as pass-through entities like LLCs, partnerships, or S corporations. Because Section 1202 can shield up to 100% of eligible capital gains from federal tax (saving 23.8%+ at exit) and corporate tax rates now sit at a flat 21%, QSBS planning has expanded far beyond tech startups into a mainstream strategy for established businesses preparing for an eventual sale.
However, if your business currently operates as an S corporation, getting your existing ownership positioned for QSBS takes more than a simple tax election.
One of the golden rules of Section 1202 is that QSBS must be acquired at original issuance directly from a domestic C corporation. Because of this rule, stock issued while a company operates as an S corporation can never qualify as QSBS.
Unlike an LLC or partnership, which can convert directly into a C corporation in a tax-free exchange that issues brand-new qualifying stock to its owners, simply revoking an S corporation election does not trigger a new stock issuance. While a former S corporation that switches to C corporation status can issue new QSBS to incoming investors or employees for fresh cash or services, the original shares held by the S corporation founders remain permanently disqualified from the Section 1202 tax-free exclusion. Swapping the founders' old shares for new shares after the switch does not fix the problem either. Under Section 1202(h)(4), stock received in a recapitalization is treated as QSBS only if the stock given up in the exchange was already QSBS, and historic S corporation stock never was.
To get around this roadblock without triggering an expensive upfront tax bill or disrupting daily business operations, S corporation owners frequently use a two-part restructuring strategy: a Type F reorganization (under Section 368(a)(1)(F)) paired with a tax-free Section 351 asset contribution into a new C corporation.
Why not just transfer the S corporation's assets straight into a new C corporation? On paper, an S corporation can contribute its operating assets directly to a newly formed C corporation in exchange for newly issued QSBS. In the real world, however, moving assets into a brand-new legal entity creates a massive operational headache. It often requires getting third-party consents to reassign customer contracts, vendor agreements, leases, permits, and licenses, while forcing the business to get a new Employer Identification Number (EIN).
Running a Type F reorganization first solves this problem. Because the tax code treats an F reorganization as a mere change in identity or form of a single corporation, the historic business keeps its existing contracts, licenses, permits, and EIN in the exact same legal entity by operation of law.
This leaves the owners with a clean three-tier structure: the founders own S Corp HoldCo at the top, S Corp HoldCo owns the newly issued QSBS of NewCo C Corp in the middle, and the historic business continues operating inside the wholly owned LLC at the bottom.
One critical rule to keep in mind is that S Corp HoldCo must continue to hold and eventually sell the NewCo C Corp stock at exit. Unlike a partnership, an S corporation cannot distribute QSBS directly to its shareholders: the distribution is treated as a sale at fair market value under Section 311(b), with the resulting gain passing through to the shareholders, and the shares they receive do not qualify as QSBS in their hands. Instead, when S Corp HoldCo eventually sells the QSBS in a qualifying exit, the Section 1202 gain exclusion passes through to its shareholders on their Schedule K-1s. Only shareholders who held their S Corp HoldCo interest when HoldCo acquired the NewCo C Corp stock, and continuously after that, share in the exclusion, and each is limited to their percentage interest at that time. Shareholders who join later, or who increase their stake, do not get the exclusion on the added interest.
Owners should also weigh the ongoing cost of the structure. Operating income is now taxed at 21% inside NewCo C Corp, and dividends it pays up to S Corp HoldCo may count as passive investment income. If S Corp HoldCo has accumulated earnings and profits from prior C corporation years, excessive passive income can trigger an entity-level tax and, in some circumstances, threaten the S election itself.
Even after you complete the reorganization and your holding company receives newly issued, QSBS-eligible stock, the tax benefits do not kick in overnight. Owners converting from an S corporation to a C corporation must clear two major hurdles before they can exclude any capital gains.
When S Corp HoldCo receives the newly issued stock in NewCo C Corp, the QSBS holding period clock starts from scratch on the date of the restructuring. You do not get credit for the years you spent building the business prior to the C corporation conversion.
Under the updated QSBS rules enacted on July 4, 2025, the newly issued C corporation stock must be held for at least three years after the reorganization to unlock any Section 1202 tax exclusion at all. Specifically, selling the stock in less than three years results in a 0% exclusion, meaning the post-conversion gain is fully subject to standard capital gains tax unless rolled over after more than six months via a Section 1045 rollover. Once the post-reorganization holding period reaches three years, 50% of the eligible post-reorg gain is excluded from federal tax. Holding for four years increases that exclusion to 75% of the eligible post-reorg gain, and holding for five or more years unlocks the full 100% exclusion up to the statutory cap (note that for stock issued on or before July 4, 2025, a full five-year hold is required before any exclusion applies).
Section 1202 is designed to reward growth that happens inside a C corporation, not to shelter gains that were already built up inside an S corporation or partnership before converting. When S Corp HoldCo contributes the operating business to NewCo C Corp in exchange for QSBS, the tax code sets the basis of that stock (specifically for Section 1202 purposes) at the fair market value of the contributed property at the time of the reorganization.
This fair-market-value rule has three huge practical takeaways for owners:
Finally, keep state taxes in mind. Many but not all states follow the federal treatment of QSBS, so some or all of the gain excluded federally may still be taxed at the state level depending on where the shareholders live.
One of the biggest risks of converting an S corporation to a C corporation is that a lucrative acquisition offer arrives before you hit the three- or five-year holding period mark. Because your QSBS clock resets to zero on the day of the conversion, selling the company two years after your reorganization will not trigger any Section 1202 tax exclusion on its own. Without further planning, all of your post-conversion growth would be hit with standard capital gains taxes right away.
However, as long as you have held the newly issued C corporation stock for more than six months after the reorganization, a Section 1045 rollover can serve as a bridge to keep your tax benefits alive. Section 1045 is available to taxpayers other than corporations, and the statute extends rules similar to the individual rollover rules to S corporations and their shareholders. The Treasury regulations spell out the mechanics only for partnerships, however, so before the 60-day clock starts, confirm with your advisor whether S Corp HoldCo itself or its shareholders will purchase the replacement stock.
Keep in mind that a rollover defers gain rather than erasing it: the replacement stock's basis is reduced by the gain you deferred. With that in mind, selling two years after converting opens up two valuable paths if you reinvest the proceeds into replacement QSBS within 60 days:
This article is for general information and is not tax or legal advice. Founders should confirm the current status of Treasury guidance and their specific facts with a qualified tax advisor.
