The QSBS exclusion can be one of the most valuable tax benefits available to founders, investors, and business owners. In the right situation, it can eliminate millions of dollars of federal income tax and, in some states, state income tax as well. The catch is that the benefit is not automatic. Stock has to satisfy a detailed set of Section 1202 rules, and those rules are much easier to address before a sale is on the table.

That is why QSBS should not be viewed only as an exit-planning issue. Buyers forming a new entity or structuring an acquisition should also think about Section 1202 before the deal is done. The choice of entity, how the company is capitalized, when stock is issued, and how the transaction is structured can all affect whether the owners may be able to use the exclusion on a future sale.

What is the QSBS gain exclusion under Section 1202?

The qualified small business stock, or QSBS, exclusion under Section 1202 allows certain noncorporate taxpayers to exclude some or all of the gain from the sale of qualifying stock. The potential savings can be significant, but the rules are specific and can be easy to overlook.

A practical Section 1202 review usually starts with three questions:

• Does the taxpayer qualify?
• Does the issuing corporation qualify?
• Does the stock qualify?

These questions are only the starting point. The real value often comes from looking at Section 1202 early, before key decisions are made about entity structure, stock issuances, financing rounds, or a future sale.

Does the taxpayer qualify?

Section 1202 is available only to noncorporate taxpayers. Individuals, certain trusts, and estates may qualify. Corporations generally do not.

Owners who hold QSBS through a partnership or S corporation may also be eligible, but special rules apply. In those cases, eligibility can depend on when the owner acquired the pass-through interest, whether the owner continued to hold that interest through the stock sale, and how the gain is allocated.

Does the issuing corporation qualify?

Only stock issued by a domestic C corporation can qualify. An LLC, partnership, or S corporation cannot issue QSBS unless it first converts or elects to be taxed as a C corporation. Even then, only stock issued after the conversion can qualify.

Section 1202 does not provide a simple list of businesses that qualify. Instead, it lists several types of businesses that are excluded. As a result, the analysis often starts by asking whether the company falls into one of the disqualified categories, including:

• Certain service businesses, such as health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, and other businesses where the principal asset is the reputation or skill of one or more employees
• Banking, insurance, financing, leasing, investing, trading, or dealing in securities
• Farming businesses
• Hospitality businesses, including hotels, motels, restaurants, and similar establishments
• Certain natural resource businesses, including businesses engaged in extraction activities for which percentage depletion is available

The company must also meet an active business requirement. During substantially all of the shareholder's holding period, at least 80% of the corporation's assets, measured by value, must be used in one or more qualified trades or businesses. This is not just a test at formation or at sale. It is something that should be monitored while the stock is held.

Section 1202 also includes a gross assets limitation. For stock issued on or before July 4, 2025, the corporation's aggregate gross assets generally could not exceed $50 million anytime before and immediately after the stock was issued. For stock issued after July 4, 2025, that threshold increased to $75 million, adjusted for inflation after 2026.

This test is not always as simple as looking at book value or tax basis. Cash, asset basis, and the fair market value of contributed property can all matter. For growing companies, financings, contributions, and restructurings should be reviewed before assuming newly issued stock will qualify.

Does the stock qualify?

The stock generally must be acquired directly from the company when the company issues it. Stock purchased from another shareholder or in a secondary market transaction generally will not qualify. Later issuances can qualify, but each issuance needs to be reviewed separately.

The holding period also matters. For stock acquired on or before July 4, 2025, taxpayers generally had to hold the stock for more than five years before any gain exclusion was available. For stock acquired after July 4, 2025, shorter holding periods may qualify for partial exclusions, with the exclusion percentage increasing the longer the stock is held.

Stock redemptions can affect QSBS eligibility and are easy to miss. The redemption rules are complex, especially when stock is issued around the same time other shareholders are being redeemed. Any redemption activity should be reviewed as part of the QSBS analysis.

Some transfers do not automatically eliminate QSBS status. For example, stock received by gift, inheritance, or certain tax-free reorganizations may retain its QSBS status if the requirements continue to be met. These rules can be helpful, but they should be reviewed before relying on them.

How much gain can be excluded?

If the taxpayer, company, and stock requirements are satisfied, the next question is how much gain can actually be excluded.

For QSBS acquired on or before July 4, 2025, taxpayers generally had to hold the stock for more than five years before any gain exclusion was available. In many cases, up to 100% of the gain may be eligible for exclusion.

For QSBS acquired after July 4, 2025, the One Big Beautiful Bill Act added a more flexible structure:

• 50% exclusion for stock held at least 3 years
• 75% exclusion for stock held at least 4 years
• 100% exclusion for stock held at least 5 years

The exclusion is also subject to a per-issuer cumulative dollar limitation. For QSBS acquired on or before July 4, 2025, the limit is generally the greater of $10 million or 10 times the taxpayer's adjusted basis in the QSBS sold during the year. For QSBS acquired after July 4, 2025, the fixed dollar limit generally increased to $15 million, adjusted for inflation after 2026, while the 10-times-basis alternative still applies.

Shareholders in the same company can have different results. Acquisition dates, basis amounts, holding periods, and ownership structures can all affect the exclusion percentage and the amount of gain that may be excluded.

Why should you review QSBS before a sale or acquisition?

Section 1202 can create significant tax savings, but the analysis is rarely simple. The company's business activities, entity history, stock issuance records, financing history, redemptions, ownership structure, holding period, and state tax rules can all affect the answer. Reviewing these issues early can help identify planning opportunities, avoid surprises during a transaction, and support the position if it is later reviewed. This is not just a seller-side issue. Buyers and investors forming new companies, acquiring businesses, or planning for a future exit should also consider whether the structure being put in place today could affect Section 1202 eligibility later. If you hold stock in a growing C corporation, are preparing for a potential sale, or are structuring an acquisition with a future exit in mind, a focused QSBS review can help determine whether the exclusion may apply and what steps should be considered before the opportunity is missed.

Plan for the tax outcome before the deal is done 

If you’re considering a sale, acquisition, or investment, Meaden & Moore can help you evaluate whether your stock may qualify for the QSBS exclusion and identify decisions that could affect eligibility. Contact our tax team to discuss Section 1202 before you finalize the transaction.