OBBB Act Update: Qualified Small Business Stock (QSBS) Gain Exclusion
The One Big Beautiful Bill (OBBB) Act brings the most significant updates to Qualified Small Business Stock (QSBS) rules in decades. These changes make it easier for investors to benefit from generous tax exclusions on gains by:
- Introducing tiered gain exclusions.
- Raising the issuer gain limit
- Expanding the gross asset threshold for qualifying businesses
If you’re planning a sale, investment, or business formation it’s suggested to consult with a tax advisor to explore how these new provisions can benefit your tax strategy.
What is Qualified Small Business Stock (QSBS)?
Qualified Small Business Stock (QSBS) is a unique tax incentive designed to encourage investment in small, innovative companies by offering significant capital gains tax exclusions.
Eligibility Requirements
To benefit from QSBS, the following requirements must be met:
- Stock must be in a U.S. C corporation
- Originally issued to the taxpayer (not bought from someone else)
- Company must be an active business
- Gross assets at time of issuance must be:
- ≤ $50 million (pre-2025)
- ≤ $75 million (post-2025)
Before and After: Key Changes to Qualified Small Business Stock (QSBS) Under the OBBB Act
Starting with stock acquired after July 4, 2025, the new rules introduce a tiered exclusion structure, increase the gain cap per issuer, and raise the qualifying asset limit for small businesses. The following table outlines these changes by comparing the previous QSBS framework with the updated provisions, offering a clear overview of how the new law impacts eligibility, tax benefits, and planning considerations.
| Category | Before OBBB Act (Pre July 4, 2025) | After OBBB Act (Post July 4, 2025) |
|---|---|---|
| Gain Exclusion Tiers | 100% exclusion (if acquired after Sept 27, 2010) with 5-year holding | Tiered exclusion based on holding period: • 3 years – 50% • 4 years – 75% • 5+ years – 100% |
| Holding Period Requirement | Minimum 5 years for any exclusion | Minimum 3 years for partial exclusion (see tiered system above) |
| Per-Issuer Gain Limit | Greater of: • $10M per issuer (lifetime, reduced by prior eligible gains), OR • 10× taxpayer’s basis in stock • Married filing separately: $5M | Greater of: • $15M per issuer (adjusted for inflation after 2026), OR • 10× taxpayer’s basis in stock • Married filing separately: $7.5M (half of $15M; inflation-adjusted after 2026) Special rule: if limit exceeded in one year, limit in later years = $0 |
| Gross Asset Threshold | $50M max (before/after issuance, incl. FMV of contributions) | $75M max for stock issued after July 4, 2025 (inflation-adjusted after 2026) |
| Historical Exclusion Rates | • 100% (post Sept 27, 2010) • 75% (Feb 18, 2009 – Sept 27, 2010) • 50% (Aug 11, 1993 – Feb 17, 2009) • 60% (empowerment zones, 2000–2019) | Historical rates preserved for pre–July 4, 2025 stock; new tiered system applies only to stock acquired after July 4, 2025 |
| AMT Treatment | • 7% of excluded gain treated as AMT preference if stock acquired before Sept. 28, 2010 • No AMT preference if acquired after Sept. 27, 2010 | AMT exclusion status maintained (retroactive) |
| Inflation Adjustments | None (limits fixed: $10M per-issuer, $50M gross asset ceiling) | Both $15M per-issuer limit and $75M gross asset ceiling adjusted annually for inflation (starting 2026) |
Why This Matters
These 2025 tax updates are designed to stimulate long-term investment in areas that support economic resilience and sustainability:
- Small business investors enjoy more flexibility with shorter holding periods and higher gain limits for tax-free QSBS income.
- Opportunity Zone investors gain more clarity and rural-targeted incentives with stricter zone designations and expanded reporting.
- Farmers benefit from installment tax options when selling land for continued agricultural use.
Contact GFG to learn more about how you can benefit from these adjusted tax laws.
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