The Big Beautiful Bill: A New Era for QSBS and Startup Investment

On July 4, 2025, President Trump signed the One Big Beautiful Bill Act (OBBBA) into law. For startup founders and investors, the most significant change was a major expansion of the Section 1202 QSBS exclusion. The 100% exclusion itself was already permanent—the PATH Act of 2015 locked that in—so OBBBA did not rescue it from any sunset. What OBBBA did was make the benefit substantially larger and easier to reach: a higher per-issuer cap, a higher company-size ceiling, and partial exclusions available years sooner. It is the most significant change to the QSBS regime in over a decade. The OBBBA also included several other startup-friendly provisions that reshape the tax and regulatory landscape for early-stage companies. Understanding what changed, what stayed the same, and what this means for your planning is critical.

Related: Post-July 4, 2025 stock has its own tranche analysis that belongs in your substantiation file — see what a Section 1202 attestation letter needs to say after OBBBA.

What the OBBBA Did for QSBS Specifically: A Major Expansion

The 100% exclusion was already permanent. The 100% Section 1202 exclusion has not faced a sunset since 2015. The PATH Act of 2015 made the 100% exclusion permanent for QSBS acquired after September 27, 2010—so the recurring “will it expire, will it drop back to 50%?” anxiety that surrounded the earliest versions of the rule was resolved a decade ago. OBBBA left that permanence untouched.

What OBBBA did instead was expand the exclusion. For the first time in over a decade, Congress made the benefit materially bigger—raising the per-issuer cap, raising the company-size ceiling, and allowing partial exclusions before the five-year mark. That is the transformational part for planning purposes.

The per-issuer exclusion cap was increased from $10 million to $15 million for post-enactment stock. For QSBS acquired after July 4, 2025, the per-issuer cap is the greater of $15 million or 10x the taxpayer's adjusted basis in the stock, indexed for inflation beginning in 2027. For stock acquired on or before July 4, 2025, the prior $10 million / 10x basis cap still applies. Note that the cap is per issuer, per taxpayer — a careful planner with multiple QSBS lots from different issuers can stack exclusions, and strategies involving gifts to non-grantor trusts can multiply the cap across additional taxpayers.

The 10x basis limit remains unchanged. Similarly, the OBBBA did not increase or eliminate the 10x basis limitation. Founders with very large gains relative to their basis still face this cap. Some proposed versions of the legislation would have increased it to 20x basis or higher, but the final bill did not include those changes.

The aggregate gross asset test was increased from $50 million to $75 million for post-enactment stock. For stock issued after July 4, 2025, the company can have up to $75 million in aggregate gross assets at issuance (indexed for inflation beginning in 2027). For stock issued on or before July 4, 2025, the prior $50 million threshold still applies. This change expands QSBS eligibility to later-stage companies that previously aged out of the regime after Series A or B financings.

The 5-year holding period was replaced by a tiered structure for post-enactment stock. For QSBS issued after July 4, 2025, the new tiered exclusion is 50% at three years, 75% at four years, and 100% at five years. For stock issued on or before July 4, 2025, the prior rule still applies: you must hold for more than five years to claim any exclusion. Note that any non-excluded gain (the unexcluded portion under the 3- or 4-year rules) is taxed at 28%, not the preferential 15% or 20% long-term capital gains rates, plus the 3.8% NIIT may apply.

In summary, the OBBBA meaningfully broadened the QSBS regime: the per-issuer cap rose from $10M to $15M, the aggregate gross asset threshold rose from $50M to $75M, and a tiered 3/4/5-year holding period replaced the old all-or-nothing 5-year cliff. (The 100% exclusion was already permanent under the PATH Act of 2015; OBBBA did not change that.) These expansions apply only to stock issued after July 4, 2025; stock issued on or before that date remains under the prior rules.

What the OBBBA Did for Startups More Broadly

Beyond QSBS, the OBBBA included several other provisions affecting startups and early-stage investment:

R&D expensing changes. The legislation made permanent the ability to fully deduct research and development (R&D) expenses in the year incurred, rather than capitalizing them and amortizing them over time. This is particularly beneficial for tech startups, biotech companies, and other R&D-intensive businesses. The permanent expensing regime reduces the upfront tax cost of developing new products and technologies.

Equipment and technology investments. The bill modified depreciation rules for certain equipment and technology investments, allowing accelerated deductions in earlier years. This incentivizes companies to invest in capital equipment and infrastructure.

No material changes to Regulation D (SEC rules). Some had hoped the OBBBA would modify SEC Regulation D rules (which govern private offerings) to increase the accredited investor thresholds or broaden who can invest in private offerings. As a budget reconciliation bill, the OBBBA did not touch securities law: it made no changes to Regulation D or the accredited investor rules.

No rollback of carried interest changes. Earlier proposals would have modified the taxation of carried interest (the ownership stakes that fund managers and founders receive). The final OBBBA did not include carried interest modifications.

The startup provisions in the OBBBA are significant but somewhat incremental. The most important is the expanded QSBS benefit, which affects founders and investors directly.

The Political Context: Signed July 4, 2025

The OBBBA was signed into law on July 4, 2025, after passing Congress through the budget reconciliation process largely along party lines. The QSBS provisions in particular drew long-standing bipartisan support; expanding and stabilizing Section 1202 has been a recurring topic in startup and small-business policy discussions for years.

The timing of the signature—on Independence Day—was symbolic. The administration framed the legislation as pro-business and growth-oriented.

What Changed vs. What Stayed the Same: A Detailed Breakdown

Stayed the same: The 100% exclusion was already permanent

No change here. The 100% exclusion has been permanent since the PATH Act of 2015, which locked it in for QSBS acquired after September 27, 2010. There was no looming sunset and no scheduled reversion to 50%.

What OBBBA changed was the size and reach of the benefit—the higher cap, the higher gross-assets ceiling, and the tiered holding period—not whether the exclusion exists.

Changed: R&D deduction treatment

Before: R&D could be deducted currently or capitalized and amortized. Different companies made different elections based on their circumstances.

After: The favorable current deduction treatment is permanent and clarified.

Changed: The per-issuer exclusion cap increased from $10 million to $15 million (post-enactment stock)

For QSBS issued after July 4, 2025, the per-issuer cap is the greater of $15 million or 10x adjusted basis, indexed for inflation beginning in 2027. For stock issued on or before July 4, 2025, the prior $10 million / 10x basis cap still applies.

Stayed the same: The 10x basis limitation

No change. Gains exceeding 10x basis are still taxable.

Changed: Aggregate gross asset test raised from $50 million to $75 million (post-enactment stock)

For stock issued after July 4, 2025, the company can have up to $75 million in aggregate gross assets at issuance (indexed for inflation beginning in 2027). Stock issued on or before July 4, 2025 remains subject to the $50 million threshold.

Changed: Tiered holding period replaces the 5-year cliff (post-enactment stock)

For stock issued after July 4, 2025, the OBBBA introduced a tiered exclusion: 50% at three years, 75% at four years, 100% at five years. For stock issued on or before July 4, 2025, the prior rule still applies — you must hold for more than five years to claim any exclusion, with no partial benefit for shorter holding periods.

Stayed the same: State tax treatment

The OBBBA does not affect state tax treatment of QSBS. States like California, which do not conform to the Section 1202 exclusion, still tax QSBS gains as ordinary income at the state level. Founders and investors still face state capital gains taxes or state income taxes on QSBS gains, regardless of the federal exclusion.

Practical Implications for Founders: Planning Certainty

For founders, the most important implication is a bigger, broader benefit. The 100% exclusion was already a permanent, reliable feature of the code, so the planning question was never whether it would survive—it was how much of a gain it would actually shelter. OBBBA widened that answer: a higher cap, a higher company-size ceiling, and partial exclusions before year five.

Now, founders can confidently incorporate as C corporations knowing that the QSBS benefit will be available at exit (assuming all other requirements are met). The benefit is as stable as any other provision of the tax code. This certainty increases the value of startup equity and makes C corporations the obvious choice for founders planning for a liquidity event.

For founders expecting early exits: If you're a founder in a company that might exit in 3-5 years (before you've held stock for five years), the permanence of the exclusion doesn't change your situation—you still need strategies like Section 1045 rollovers to preserve the benefit. But it does mean that if you do need to roll proceeds into replacement QSBS, you know that replacement investment will also qualify for the permanent 100% exclusion.

For R&D-intensive startups: The permanent R&D deduction treatment means you can deduct R&D expenses currently without worrying about capitalization requirements or amortization rules changing. This improves cash flow and tax planning for tech startups, biotech companies, and other R&D-heavy businesses.

Implications for Investors: QSBS as a Reliable Tax Planning Tool

Venture investors and angel investors benefit from knowing that QSBS exclusion will be available for exits five or more years in the future. This increases the effective value of startup investments and makes it easier to factor the QSBS benefit into expected returns.

For venture firms: Most VC funds have 10-year lives with distributions occurring throughout the life of the fund. For portfolio companies that are exiting in years 5-10, the QSBS exclusion is now reliably available (assuming all other requirements are met). This increases the net proceeds from exits and improves fund returns.

For angel investors and early-stage investors: Angel investors who buy shares in seed rounds or Series A rounds can now confidently plan around the QSBS benefit, knowing the five-year holding period will result in 100% exclusion (subject to the $10 million/$15 million and 10x basis limits). The permanent exclusion makes QSBS a more attractive component of an investment return profile.

For institutional investors: Large institutional investors (endowments, pension funds, family offices) benefit from the certainty around QSBS, which allows for clearer tax planning across their portfolio companies.

How the OBBBA Interacts with State Taxes: The California Problem

Here's a critical limitation: the federal QSBS exclusion does not help in states that don't conform to it.

California: California does not conform to the federal Section 1202 exclusion. A founder in California who has $50 million in federal QSBS gains (all excluded from federal tax) still owes California income tax on those gains at the 13.3% top rate (or whatever the rate is). The federal permanence doesn't help with state taxes.

Washington State: Washington has a 9.9% capital gains tax on gains above $1M after a standard deduction, and 7% on gains beneath $1M after the deduction. But Washington conforms to the federal Section 1202 exclusion: its capital gains tax base is built on federal net long-term capital gain, and gain excluded under §1202 federally never enters Washington's tax base. A founder who recognizes a QSBS gain that fully qualifies under §1202 owes no Washington capital gains tax on the excluded portion. (The Washington legislature has considered decoupling bills that would have taxed QSBS gains separately, but those have not passed.)

New York: New York generally conforms to the Section 1202 exclusion—its personal income tax starts from federal AGI, so gain excluded federally is generally excluded from the New York base as well. In early 2026, in response to OBBBA, New York lawmakers advanced a proposal to decouple from §1202 retroactive to January 1, 2025, but it was withdrawn after industry pushback. It is worth monitoring, since a similar proposal could resurface.

The takeaway: Founders in high-tax states should still consider the state tax consequences of an exit, even with the federal QSBS exclusion. Moving to a state without income tax (like Florida or Texas) before an exit can be worth millions of dollars.

What Wasn't Included: Proposals That Didn't Make the Final Bill

Increasing the $10 million gain limit: Earlier proposed versions would have increased the per-taxpayer limit even further — to $20 million or even $50 million. Those higher amounts didn't make the final bill, but the enacted version still increased the cap from $10 million to $15 million per taxpayer.

Increasing or eliminating the 10x basis limitation: Advocates for founders and large exits proposed increasing the 10x basis limit to 20x or eliminating it entirely. The final bill retained the 10x limit unchanged.

SEC Regulation D expansion: Some hoped the OBBBA would broaden who can invest in private offerings (by raising accredited investor thresholds or creating new investor categories). The OBBBA included no securities-law provisions and did not modify Regulation D.

Carried interest modifications: Proposals to change how carried interest is taxed did not make the final bill.

These omissions are important: OBBBA expanded QSBS meaningfully, but it left the most aggressive proposals—a much higher cap, a higher basis multiple, Regulation D changes—on the table. Future legislation could still address them.

Comparison to Prior QSBS Legislation

Understanding how the OBBBA compares to prior QSBS legislation helps illustrate what's new:

• The Omnibus Budget Reconciliation Act of 1993 (OBRA 1993): Enacted Section 1202, introducing a 50% exclusion with a 5-year holding period.
• The American Recovery and Reinvestment Act of 2009 (ARRA): Increased the exclusion to 75% for QSBS acquired between February 18, 2009, and September 27, 2010.
• The Small Business Jobs Act of 2010: Increased the exclusion to 100% for QSBS acquired after September 27, 2010 (originally a short-term provision, later extended multiple times).
• The PATH Act of 2015: Made the 100% exclusion permanent for QSBS acquired after September 27, 2010.
• The Tax Cuts and Jobs Act of 2017 (TCJA): Lowered the corporate tax rate from 35% to 21%, indirectly making C corporation status (and QSBS) more attractive.
• The One Big Beautiful Bill Act of 2025 (OBBBA): For stock issued after July 4, 2025, raised the per-issuer cap from $10M to $15M, raised the aggregate gross asset threshold from $50M to $75M (both indexed beginning in 2027), and replaced the all-or-nothing 5-year holding period with a tiered structure (50% at 3 years, 75% at 4 years, 100% at 5 years).

The pattern is clear: QSBS has been getting steadily more generous since 1993. The OBBBA is the most significant expansion of the regime in over a decade — broader eligibility for later-stage companies, a higher per-issuer cap, and earlier access to partial exclusions through the tiered holding period.

What Founders Should Do Now: Action Steps

1. Confirm your company is a C corporation. If you're a founder and your startup is an LLC or S corp, consider whether converting to a C corporation makes sense. The QSBS benefit is a major reason to use a C corp structure.

2. Document your stock issuances carefully. Keep detailed records of when stock was issued, to whom, at what price, and in connection with what. When you exit, you'll need to prove to the IRS that your stock qualifies as QSBS.

3. Track your holding period closely. Mark the five-year anniversary of your stock issuance. This is the moment when your stock becomes eligible for the 100% exclusion. If you're approaching or past this date, you can exit with confidence knowing the benefit applies.

4. Plan around the per-issuer cap and 10x basis limit. Post-enactment stock (after July 4, 2025) is subject to the greater of $15 million or 10x adjusted basis per issuer; pre-enactment stock is subject to the greater of $10 million or 10x basis. If you have stock acquired under both regimes, or expect a very large exit, model the limits separately for each tranche. Stacking strategies (gifts to non-grantor trusts or family members) can multiply available exclusions across taxpayers.

5. Consider state tax implications. If you're in a high-tax state, research whether relocating before an exit makes sense. A move to Florida or Texas before a big exit could save millions in state taxes.

6. Work with a tax advisor on exit planning. Once you're approaching a potential exit, engage a tax advisor early to plan the structure, timing, and documentation. The difference between a well-planned exit and a reactive one can be substantial.

The Bottom Line

The OBBBA represents a watershed moment for QSBS planning: the benefit is now substantially larger. The 100% exclusion was already permanent—the PATH Act settled that in 2015—but OBBBA raised the cap, raised the company-size ceiling, and opened partial exclusions before year five, so founders and investors can plan around a bigger payoff.

The core eligibility requirements still apply: domestic C corporation, original issuance, active business test, and the gross asset test (now $50M for pre-July 4, 2025 stock and $75M for post-July 4, 2025 stock). The big changes for post-enactment stock are the tiered 3/4/5-year holding period (replacing the old all-or-nothing 5-year cliff), the higher $15M per-issuer cap (vs. $10M for pre-enactment stock), and the higher $75M gross-assets ceiling that brings later-stage companies into the regime.

For founders, this means the C corporation structure is now the clear choice, and holding QSBS through a five-year exit is a proven path to significant tax savings. For investors, it means QSBS is a reliable component of expected returns from startup investments.

Take advantage of this permanent benefit by planning your startup structure, documentation, and exit strategy with the understanding that the QSBS exclusion will be there when you need it.

This post is for educational purposes only and is not legal or tax advice. Consult a qualified attorney about your specific situation.