Section 1202 continues to be one of the most significant federal tax incentives for founders, early employees, and investors in qualifying domestic C corporations. If the rules are satisfied, a noncorporate taxpayer may exclude a substantial portion, or potentially all, of the gain realized on the disposition of Qualified Small Business Stock (QSBS). The One Big Beautiful Bill Act (OBBB) retained the core eligibility framework but expanded the benefit for stock acquired after July 4, 2025 by adding 3-, 4-, and 5-year exclusion tiers, increasing the fixed per-issuer cap from $10 million to $15 million, and increasing the qualified small business gross-asset threshold from $50 million to $75 million.

Why Section 1202 matters

A shareholder of qualifying 1202 stock can exclude the greater of $10 million or 10 times their cost basis from their taxable income on exit. For stock acquired after July 4, 2025 the exclusion amount has been increased to the greater of $15 million or 10 times their cost basis. As a result, many investors in 1202 stock will pay no tax on exit, which is a tremendous tax benefit.

The exclusion limit applies on a per-taxpayer, per-issued basis. The fixed dollar cap and alternative 10-times-basis limitation should both be evaluated, especially in cases involving low initial basis and substantial appreciation. Gain that is not excluded may still require separate rate and character analysis. Section 1045 also remains relevant: taxpayers that sell QSBS held for more than six months may defer gain by reinvesting in replacement QSBS within 60 days, which can be useful when an exit occurs before the full exclusion tier is available or when gain exceeds the cap.

Core qualification requirements

• Qualification - To qualify for Section 1202 the investment must be stock in a Domestic C corporation. Partnerships and S corporations do not qualify.
• Original issuance - The shareholder generally must acquire stock directly from the corporation in exchange for cash, property other than stock, or services. Secondary purchases generally fail to qualify. Founder stock, preferred stock purchased in a primary financing, restricted stock, and stock received on exercise of options or warrants may qualify if the original issuance rules are preserved. Please note for stock received from the exercise of options the 5 year holding period does not begin until the instrument is exercised and you actually hold stock.
• Gross asset test - At issuance, aggregate gross assets generally must not exceed $50 million for pre-OBBB stock or $75 million for post-July 4, 2025 stock. Cash received in the issuance counts in the immediate-after test, and contributed property is measured at fair market value. Financing proceeds can push an otherwise eligible corporation over the threshold.
• Active business and qualified trade or business - During substantially all of the shareholder’s holding period, at least 80% of asset value must be used in qualified active business activities. Excluded fields include health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, certain investment activities, farming, natural resource extraction, and hotels, motels, restaurants, or similar businesses.
• Mixed activities and service revenue - A company that labels itself as software, technology, platform, or data-driven should still analyze revenue streams, service delivery, personnel economics, and customer value proposition. Meaningful implementation, customization, advisory, or time-and-materials revenue can create risk if the business economics resemble an excluded service field.
• Redemption limitations - Anti-churning rules can disqualify otherwise eligible stock if the corporation redeems more than a de minimis amount from the taxpayer or related persons during the relevant four-year window or engages in significant redemptions during the relevant two-year window. Founder buybacks, employee repurchases, recapitalizations, and pre-financing liquidity events should be reviewed before approval.

Issuer vs. shareholder responsibility

Section 1202 is claimed by the shareholder, but many of the facts needed to defend the position are issuer-level facts. The shareholder controls its holding period, transfer history, taxpayer status, and limitation usage. The company generally controls or has access to the corporation-level evidence: C-corporation status, aggregate gross assets before and immediately after issuance, active-business compliance, qualified-trade-or-business analysis, redemption history, lower-tier structure, and transaction records. Practically, the strongest process assigns the company responsibility for maintaining issuer-level records while making clear that each shareholder must still evaluate its own eligibility and reporting position.

Certifications should be negotiated at issuance

QSBS documentation covenants are most valuable when negotiated at formation or financing, not during an exit. By the time a sale is underway, management may have changed, records may be incomplete, and minority investors may have limited leverage. A workable covenant generally requires factual certifications and reasonable access to supporting records rather than an absolute representation that stock is QSBS for every holder and every purpose.

• Recommended support includes issuer name, class of stock, issuance date, shares covered, C-corporation confirmation, gross-asset testing, treatment of contributed property, business-activity support, redemption history, stock vintage, applicable cap, and a covenant to update information for sale, audit, or Section 1045 purposes.
• The certification should be framed as an issuer-fact package. It should help shareholders and advisors evaluate Section 1202 without asking the company to guarantee shareholder-specific conclusions.

Enhanced planning considerations

Stacking and trust planning - Because the exclusion is calculated on a per-taxpayer, per-issuer basis, taxpayers with expected gain above the cap may consider completed gifts of QSBS to separate eligible taxpayers, including properly structured non-grantor trusts. For example, a founder expecting gain above the applicable cap may transfer a portion of qualifying shares to one or more non-grantor trusts well before a sale, potentially allowing each separate taxpayer to use its own exclusion limitation. Timing, substance, fiduciary administration, and assignment-of-income principles are critical; last-minute transfers after a deal is effectively in place are vulnerable.

Partnerships and pass-through ownership - Partnerships may hold QSBS, but partners generally benefit only if they held the partnership interest when the partnership acquired the QSBS and continuously thereafter. Partners admitted after the partnership acquired the stock generally should not expect to benefit from earlier QSBS blocks. Excludable gain is generally limited by reference to the partner’s ownership when the QSBS was acquired, and special allocations, carried interests, and profits interests should be reviewed carefully because the law is not fully settled in all carried-interest fact patterns.

Section 721 contribution trap - Contributing QSBS to a partnership in exchange for a partnership interest generally does not preserve the Section 1202 benefit in the hands of the partnership. By contrast, a distribution of QSBS out of a partnership to a qualifying partner may preserve status if statutory conditions are satisfied. In short, partnership distributions may work; partnership contributions are usually where taxpayers have issues.

Conversions and acquisitions - A new C corporation or conversion of an existing LLC or partnership may create eligibility for future appreciation, but pre-existing built-in gain generally does not become excludable merely because the business is moved into corporate form. Incorporation transactions should be modeled as a bifurcated analysis: pre-conversion appreciation versus post-conversion appreciation.

M&A and exit structure - Section 1202 is generally most powerful in a stock sale. A taxable asset sale by the corporation generally does not produce a shareholder-level Section 1202 exclusion on the corporation’s asset gain, and any distribution of proceeds requires separate corporate/shareholder analysis. Buyers often prefer asset purchases to obtain a basis step-up and avoid inherited liabilities, so preserving Section 1202 may affect price, indemnities, elections, rollover equity, or alternative structures. References to liquidation transactions should be used carefully and explained if intended; transaction form matters, and a stock sale is usually the cleanest path to realizing the shareholder-level exclusion.

Tax-free reorganizations and rollover equity - Tax-free exchanges may preserve QSBS status in some circumstances, but preservation does not always mean full preservation of future exclusion. If QSBS is exchanged for stock that would not independently qualify, the benefit may be limited to built-in gain at the time of the exchange. This distinction should be modeled carefully in sponsor-backed transactions and rollover equity structures.

Assess your QSBS opportunity

Section 1202 remains a valuable tax planning opportunity, and the OBBB has expanded the potential benefits for qualifying stock acquired after July 4, 2025. Given the complexity of the eligibility rules and planning considerations, businesses, founders, and investors should work with a trusted advisor to evaluate opportunities for available tax benefits.