The QSBS Exclusion: What Founders and Early Investors Should Understand About Section 1202

Founders who spend years building a company toward a sale or acquisition tend to focus on the deal itself: valuation, structure, who's buying, what the earnout looks like. The tax bill that follows a successful exit often gets less attention until it's nearly due, and by then, most of the planning window has closed. Qualified Small Business Stock, governed by Section 1202 of the tax code, is one of the few provisions that has to be addressed at or near the company's founding, not after a term sheet is signed.

Recent legislation reshaped these rules in ways that carry significant consequences for anyone holding stock issued in the past year, and for anyone forming a new C corporation now. The mechanics are specific enough that getting them wrong — or simply not knowing they exist — can mean paying tax on gain that didn't have to be taxed at all.

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What Section 1202 Was Built to Reward

The QSBS exclusion allows noncorporate founders and investors to exclude some or all of the gain from selling stock in a qualifying small C corporation. To qualify, several conditions generally have to be met:

• The stock must be acquired directly from the corporation when it's originally issued — not purchased later on a secondary market.
• The issuing company must be a domestic C corporation, not an S corporation, LLC, or partnership.
• The corporation's gross assets can't exceed a set threshold at or shortly after issuance.
• The company has to meet an "active business" requirement for substantially all of the holding period, which rules out most investment and holding companies.
• The stock has to be held for a minimum period before any exclusion applies.

Because the gross asset test and the qualifying criteria apply at issuance, a company that's already grown past the threshold can't retroactively make older or newly issued stock qualify.

Two Sets of Rules Now Apply

The One Big Beautiful Bill Act, signed into law in July 2025, expanded Section 1202 substantially — but only for stock acquired after July 4, 2025. Stock issued before that date is still governed by the prior rules. Founders and investors who've been issued QSBS at different points may now be holding shares from the same company that are subject to two different sets of terms.

Stock Acquired Before July 5, 2025

Under the original rules, the holding period requirement is five years before any exclusion applies — there's no partial credit for holding four years and eleven months. The excludable gain is capped at the greater of $10 million or ten times the taxpayer's basis in the stock. And the issuing corporation's gross assets couldn't have exceeded $50 million at or immediately after the stock was issued.

Stock Acquired After July 4, 2025

The OBBBA introduced a tiered exclusion tied to how long the stock is held:

• Held at least three years, but less than four: 50% of the gain can be excluded.
• Held at least four years, but less than five: 75% can be excluded.
• Held five years or more: 100% can be excluded, as under the old rules.

The per-issuer exclusion cap increased from $10 million to $15 million, with inflation adjustments scheduled to begin in 2027. The gross asset threshold for qualifying corporations rose from $50 million to $75 million, giving more mature startups a longer runway to issue qualifying stock.

Why the Issuance Date Changes the Outcome

The rules include a detail that catches people off guard: exchanging older QSBS for new shares — in a merger, a recapitalization, or certain stock-for-stock transactions — generally doesn't reset the acquisition date to take advantage of the newer, more generous terms. The carryover holding period rule means stock acquired before July 5, 2025 tends to stay anchored to the pre-OBBBA $10 million cap and five-year requirement, even if it's later exchanged for shares in a restructuring.

That makes recordkeeping unusually important. A founder or early employee could hold QSBS from the same company issued at different times, subject to different caps and different holding-period math, and sorting that out accurately requires documentation going back to the original issuance date.

A Hypothetical Example

Consider a hypothetical founder, Maria Chen, who incorporated her software company as a C corporation in 2022 and received founder's stock at that time. She raised additional rounds in 2024 and again in late 2025, after July 4. If Maria sells her position five years after each respective issuance, her 2022 shares would be evaluated under the pre-OBBBA rules — a $10 million cap, tied to a full five-year hold. Her 2025 shares, if held at least three years, could qualify for a partial exclusion under the new tiered schedule, with the possibility of a $15 million cap if held the full five years. The two blocks of stock, issued from the same company, would be taxed under different frameworks entirely.

Questions Worth Raising With Your Advisor

• When was your stock actually issued, and does that place it under the pre- or post-OBBBA framework?
• Has your company's gross asset level been tracked and documented at each issuance date?
• If you're planning a merger or exchange involving QSBS, would that transaction affect your holding period or acquisition date?
• For a company still forming, does incorporating as a C corporation now — rather than later — open up a longer window under the $75 million threshold?

Could QSBS Change How You Plan an Exit?

For founders and early employees of the right kind of company, Section 1202 can be the difference between a sale that's heavily taxed and one where a meaningful share of the gain is excluded entirely. Getting there depends on decisions made at formation and issuance, tracked carefully over years, not adjustments made in the weeks before a deal closes. If you hold — or are about to receive — stock in a C corporation you believe could qualify, it's worth having the structure reviewed well before an exit is on the table.

Schedule a complimentary consultation with Ben Loughery.

Ben Loughery is a CERTIFIED FINANCIAL PLANNER® and founder of Lock Wealth Management, based in Atlanta, GA. He specializes in retirement income planning, tax optimization, and helping clients build financial confidence at every stage of life.