For founders and early investors in qualifying U.S. companies, Qualified Small Business Stock (QSBS) can create one of the most significant federal tax benefits available on a successful business exit. Under Section 1202 of the Internal Revenue Code, eligible non-corporate U.S. shareholders may exclude some or all of the gain from the sale of QSBS from federal income tax, subject to specific conditions and dollar limits.
The opportunity has become even more significant following the One Big Beautiful Bill Act (OBBBA). For stock issued after July 4, 2025, the rules increase the per-issuer exclusion cap from $10 million to $15 million, introduce a tiered exclusion based on the holding period, and increase the qualifying small-business gross asset threshold from $50 million to $75 million.
But QSBS is not simply a five-year holding-period benefit. Eligibility depends on a combination of shareholder-level and corporation-level requirements, many of which must continue throughout the holding period.
That makes QSBS planning something founders and investors need to consider before an investment, restructuring, redemption, or exit, rather than immediately before a sale.
Background
Section 1202 permits individuals, trusts, and pass-through entities to exclude some or all of the gain recognized from the sale of qualifying small business stock. Where the requirements are satisfied, a founder or early investor who could otherwise face federal capital gains tax of up to 23.8% may potentially exclude the gain up to the applicable statutory limit.
The benefit has evolved considerably since QSBS was introduced in 1993.
For stock issued between September 28, 2010 and July 4, 2025, qualifying taxpayers could generally receive a 100% exclusion after satisfying the five-year holding requirement, subject to the applicable exclusion cap.
For stock issued after July 4, 2025, OBBBA changes the framework. The exclusion is now tiered based on the holding period:
| Holding period | Exclusion |
|---|---|
| 3 years | 50% |
| 4 years | 75% |
| 5 years | 100% |
The standard per-issuer dollar cap also increases from $10 million to $15 million for qualifying stock acquired after July 4, 2025.
This change is particularly relevant for founders and early employees who may face an exit opportunity before reaching the traditional five-year holding period. Under the new rules, a qualifying three- or four-year holding period can potentially provide a partial exclusion rather than no exclusion at all.
What actually makes a Stock “QSBS”? (Shareholder’s & Corporation’s Obligations)
QSBS eligibility depends on four separate conditions. One is tested at issuance, while the others continue to matter during the shareholder’s holding period.
Original Issuance (Shareholder’s Obligation)
The stock must generally be acquired directly from the issuing corporation, or through an underwriter, in exchange for money, property, or services.
Stock purchased from another shareholder in a secondary-market transaction does not qualify merely because the investor subsequently holds it for the required period.
For founders and early investors, this makes the manner in which the shares are acquired an important part of QSBS planning.
The Small-Business Asset Threshold
At the time of issuance, the corporation’s aggregate gross assets must not exceed the applicable threshold.
For stock issued on or before July 4, 2025, the threshold is $50 million. For stock issued after July 4, 2025, OBBBA increases the threshold to $75 million.
The test is based on cash plus the adjusted tax basis of other property rather than GAAP book value. The threshold is measured immediately before and immediately after the stock issuance. Members of a parent-subsidiary controlled group are treated as a single corporation for this purpose.
This means a company cannot simply shift assets among controlled entities to remain below the threshold.
The Active Business Requirement
The active business requirement is one of the most fact-intensive aspects of QSBS eligibility because it must generally be satisfied during substantially all of the relevant holding period.
At least 80% of the corporation’s assets, measured by value, must be used in the active conduct of one or more qualified trades or businesses.
Certain businesses are excluded, including specified service businesses, banking, insurance, financing, farming, natural resource extraction, and hotels and restaurants. Certain corporate categories, such as current or former DISC, regulated investment companies, REMICs, and cooperatives, are also excluded.
Cash and investments can create additional challenges.
The working capital exception allows certain cash, cash equivalents, and securities to be treated as active assets. The exception generally applies for the first two years after incorporation and is subsequently limited to 50% of the corporation’s total assets.
There is also a 10% portfolio-stock limit. Holding more than 10% of net assets in stock or securities of non-subsidiary corporations, beyond the working capital rules, can cause the active business requirement to fail.
The examples show why both tests matter. A company can satisfy the 80% active asset test but still fail because its portfolio investments exceed 10% of net assets.
Redemption Limits (Anti-Churning Rules)
QSBS status can also be affected by corporate stock redemptions.
If a corporation purchases its own stock from shareholders or related parties within specified periods around the issuance of QSBS, or repurchases more than 5% of the value of its stock from a shareholder within the relevant two-year window, the redemption can jeopardize QSBS qualification.
This is particularly important because the consequences can extend beyond the shareholder involved in the redemption.
A breach of a corporate-level QSBS requirement can potentially jeopardize the QSBS status of the stock held by other shareholders as well.
Enhanced Exclusion Caps
The OBBBA increases the maximum gain exclusion from $10 million to $15 million per taxpayer, per issuer for QSBS acquired after July 4, 2025. The increased cap is scheduled to be indexed for inflation beginning in 2027.
An alternative limitation remains available based on 10 times the taxpayer’s basis in the specific stock.
The exclusion is determined on a per-issuer, per-shareholder basis, rather than simply on a transaction-by-transaction basis. Therefore, qualifying investments in multiple companies can potentially have separate exclusion limits.
For example, if Mr. X owns qualifying QSBS in Company A and Company B, the $15 million limit can apply separately to each issuer. The same principle applies independently to another shareholder.
If a shareholder sells shares of the same corporation in multiple tranches during the same taxable year, however, the exclusion limit applies to the aggregate gain from those dispositions rather than resetting for every individual sale.
For eligible gain exceeding the applicable exclusion limit, the alert notes a maximum federal capital gains rate of 28%, compared with the normal 23.8% rate inclusive of net investment income tax.
Gray areas requiring clarification from IRS:
Although Section 1202 has existed since 1993, several interpretive questions remain unresolved by formal IRS regulations or published guidance.
One issue concerns the meaning of substantially all of the shareholder’s holding period for the active business requirement.
Another concerns the meaning of value for the 80% asset test. The rules do not formally specify whether value should be measured using fair market value, book value, or another methodology. Practitioners generally follow a fair-market-value approach, but this has not been formally clarified by the IRS.
The distinction can be significant.
The case study in the alert demonstrates that the same company can fail the 80% active business test and the portfolio stock test when measured using book value but pass both when measured using fair market value.
Mixed qualifying and non-qualifying business activities also create uncertainty. Where a corporation conducts both types of activities, it is unclear whether the active business test should be applied activity-by-activity through asset allocation or whether a non-qualifying activity could affect the corporation’s eligibility more broadly.
A reasonable allocation methodology should be adopted and supporting calculations retained where such mixed activities exist.
There is also uncertainty regarding whether the QSBS exclusion cap is available separately to each spouse when a married couple files jointly. Many tax professionals support separate limits where both spouses independently qualify as owners, but the issue remains subject to clarification.
Rollover and Reorganization Benefits
The QSBS framework can offer benefits beyond a straightforward sale.
Under Section 1045, gain from QSBS may potentially be deferred where the proceeds are reinvested into replacement QSBS within the prescribed timeframe.
M&A transactions and reorganizations can also create opportunities for QSBS treatment and holding periods to carry forward into a successor entity in certain structures. This can potentially preserve the benefit for a future exit.
These rules are highly dependent on the structure and timing of the transaction. Taxpayers should therefore consider these benefits before completing a sale, rollover, or corporate transaction.
Illustrative case study
Consider a U.S. textile manufacturing company incorporated on January 1, 2025, with shares issued on September 1, 2025.
The company’s aggregate book value of assets was $5 million immediately before issuance and $6 million immediately after issuance. The case study then evaluates the company’s asset position in 2026 and 2027 using both book value and fair market value methodologies.
The results highlight the importance of the valuation question.
In the later year, the company fails the 80% active business and portfolio stock tests under the book-value method but satisfies both when measured using fair market value. The difference is driven in part by the value attributable to intellectual property and goodwill that does not appear on the balance sheet in the same way as tangible operating assets.
The example demonstrates that valuation methodology can determine whether a company satisfies the QSBS active business requirements.
It also reinforces another important point: the active business requirement must be satisfied during substantially all of the shareholder’s holding period. A shortfall in one year does not necessarily mean that QSBS status is automatically lost if the requirement is otherwise satisfied for substantially all of the relevant period.
Conclusion
QSBS can provide an extraordinary federal tax benefit to founders and early investors, but the benefit is built on a detailed set of conditions.
The OBBBA expansion makes the opportunity even more significant for stock issued after July 4, 2025. The $15 million per-issuer exclusion cap, increased $75 million asset threshold, and tiered exclusion for three-, four-, and five-year holding periods can materially change the tax planning equation for qualifying investments.
At the same time, QSBS eligibility is not a one-time test performed when shares are issued.
The corporation must continue to satisfy the active business requirements during substantially all of the relevant holding period. Asset composition, excess cash, portfolio investments, business activities, and stock redemptions can all affect the analysis.
For this reason, shareholders and management should consider periodic QSBS reviews rather than waiting until a sale is already underway. The alert recommends monitoring the asset threshold and active-business requirements on a quarterly or semi-annual basis, closely tracking stock redemptions, and maintaining documentation supporting asset valuations, business-use classifications, and holding periods.
The federal exclusion also does not automatically translate into an equivalent state tax benefit. State treatment can range from full conformity to partial add-backs or complete decoupling from the federal exclusion. A state-by-state review is therefore essential before assuming that the federal QSBS benefit will produce the same level of state tax savings.
For founders, investors, and companies preparing for a future transaction, the key lesson is simple: QSBS planning starts long before the exit.
FAQs
What is QSBS?
Qualified Small Business Stock, or QSBS, is stock that satisfies the requirements of Section 1202 of the Internal Revenue Code. Eligible non-corporate U.S. shareholders may be able to exclude some or all of the gain from its sale.
What is the QSBS exclusion limit for stock issued after July 4, 2025?
The standard per-taxpayer, per-issuer exclusion cap increases to $15 million for qualifying stock acquired after July 4, 2025. The alternative 10-times-basis limitation remains available.
Can QSBS qualify for a 100% exclusion before five years?
Under the OBBBA rules described in the alert, stock issued after July 4, 2025 can receive a tiered exclusion: 50% after three years, 75% after four years, and 100% after five years.
Does QSBS eligibility only need to be tested when the shares are issued?
No. Several requirements, particularly the active business requirement, must continue during substantially all of the shareholder’s holding period.
Can a stock redemption affect QSBS status?
Yes. Certain corporate redemptions around the time of QSBS issuance can cause the stock to fail the QSBS requirements. A corporate-level breach can potentially affect QSBS status for other shareholders as well.
Does the federal QSBS exclusion automatically apply for state tax purposes?
No. State treatment varies. Some states conform to the federal exclusion, while others partially add back or completely decouple from the federal treatment.
Can QSBS gain be deferred instead of immediately recognized?
Potentially. Section 1045 may allow gain deferral where QSBS proceeds are reinvested into replacement QSBS within the prescribed timeframe.
About M2K Advisors
M2K Advisors is an international tax advisory firm having offices in India, Singapore, USA & UAE. Our firm offers varied services in USA such as setting up companies in Delaware and other states in USA, tax advisory, tax return filing, state & local tax compliance, sales & use tax compliance, IRS audit representation, FBAR & FATCA filing. M2K Advisors is the specialist firm for businesses managing US tax obligations. Our focused expertise in M&A and cross border structuring, state & local nexus studies, and multi-state compliance makes us the most reliable partner for foreign entities and startups entering the USA market.
Disclaimer: This article is intended for general guidance only and should not be considered tax advice or an opinion. On any specific matter, reference should be made to the appropriate advisor.
