OBBBA QSBS Tiered Exclusion: The 50%/75%/100% Phase-In Explained

The OBBBA QSBS Tiered Exclusion Turns Five Years Into a Sliding Scale

Founders used to face a brutal all-or-nothing choice with their stock. Sell before five full years and Section 1202 offered nothing. The 2025 tax act shattered that cliff into three ascending tiers.

Stock issued on or after July 4, 2025 earns a 50% exclusion at the three-year mark. The exclusion climbs to 75% at four years and reaches 100% at five. Every step earlier in a company's life now carries meaningful tax value.

This guide walks the tier mechanics with worked dollar examples. It also covers the enlarged caps, the AMT treatment, and the rollover interaction. Founders and early investors planning an exit should read this before setting a sale date.

The statutory text sits in Section 70431 of the 2025 act. Our broader OBBBA capital gains review frames the whole package. This article drills into the tier structure alone.

Timing was always the hidden variable in QSBS planning. The old law made one specific holding milestone worth everything. The new schedule spreads that value across three separate exit windows.

The Tier Table: Fifty, Seventy-Five, and One Hundred Percent

The exclusion schedule now depends entirely on the holding period. Each tier requires the stock to be held at least that long. Partial exclusions apply automatically once the threshold is met.

The tiers apply only to stock issued after the enactment date. Stock acquired earlier follows the legacy schedule with a single five-year gate. Both tracks can coexist inside the same founder's portfolio.

Percentage matters less than the taxable remainder. A 50% exclusion on a $4 million exit still leaves $2 million exposed. The tier system rewards patience, but it no longer punishes early liquidity with zero benefit.

Employee departures also gain new flexibility under the tiers. Staff leaving at year three previously surrendered every exclusion benefit. Partial tiers keep meaningful value inside departing employees' exits too.

Which Stock Actually Qualifies for the New Tiers

Every original Section 1202 requirement remains in force. The issuer must be a domestic C corporation with qualifying active businesses. Aggregate gross assets cannot exceed the statutory ceiling when stock is issued.

The stock must arrive through original issuance directly from the company. Secondary market purchases and most buyout structures never qualify. The corporation must also pass the active business tests throughout nearly the entire holding window.

The acquisition date rule deserves special attention under the new law. Your holding period counts from the first day you held the stock, applying the holding period rules. A founder's shares and an early employee's shares therefore age on different clocks.

Corporate redemptions, conversions, and reorganizations can reset or preserve the clock. Each corporate event demands a quick review against the qualification rules. Documentation from issuance day remains the founder's best defense.

A short list of businesses can never qualify regardless of structure. Professional services firms, financial businesses, hospitality operations, and farming all fail. Hotels, restaurants, and similar service businesses round out the excluded list.

The list matters because venture portfolios often mix qualifying and nonqualifying units. A software subsidiary can qualify while its hospitality affiliate cannot. Structuring decisions at issuance determine which shares carry the benefit.

One structural note helps founders read the schedule correctly. The tiers measure holding period, not vesting or option exercise dates. Early exercise strategies interact with the clocks in ways worth modeling.

The Bigger Caps: Fifteen Million and Seventy-Five Million

The tier schedule pairs with dramatically larger dollar ceilings. Post-enactment stock now carries a $15 million cap on per-issuer exclusions. That figure was $10 million before the act and now indexes for inflation after 2026.

An alternative election, using ten times basis instead of the dollar cap, survives unchanged. Taxpayers exclude eligible gain up to the greater of the dollar cap or ten times basis. Investors who buy in at high valuations often prefer the multiple route.

A quick example shows the multiple route working for late-stage investors. The alternative matters most when basis is unusually large relative to the dollar cap.

An investor buys stock with a $2 million basis in a round after growth. Ten times basis reaches $20 million, exceeding the $15 million dollar cap. Her exclusion ceiling follows the higher multiple figure instead.

The corporate asset ceiling grew in parallel. Companies can now have up to $75 million in aggregate gross assets at issuance. That threshold was $50 million, and it also indexes going forward.

One trap hides inside the cap arithmetic. Prior eligible gains excluded from the same issuer reduce the remaining cap. The statute also zeroes the inflation adjustment once a taxpayer exceeds the limit for an issuer.

Married filers filing separately apply half of the applicable dollar limit. That mechanical detail surprises spouses planning separate exits. Coordinate the sequence before either spouse files anything.

Worked Examples at Each Tier

Numbers convert the tiers from theory into planning tools. Consider Priya, who holds stock issued in September 2025 from her C corporation. Her basis is $400,000, and she receives a $4 million offer in late 2028.

At that point she has held for just over three years. The 50% tier excludes $2 million of gain, leaving $2 million taxable. At a combined 23.8% federal rate, her tax lands near $476,000.

Waiting one more year changes the arithmetic dramatically. The same sale in 2029 triggers the 75% tier instead. Only $1 million remains taxable, cutting the federal bill to roughly $238,000.

Reaching the five-year mark in 2030 removes the tax entirely. The full $3.6 million gain disappears from federal income at the 100% tier. Her per-issuer cap of $15 million never comes close to binding.

The cap matters for serial founders rather than single-exit sellers. An early exit using $2 million of exclusion leaves $13 million for later dispositions. Tracking the running total per issuer becomes a real planning task.

Run your own figures through our capital gains calculator before choosing a tier. State treatment can narrow or widen the federal gap depending on conformity.

Installment reporting adds one more wrinkle to tier timing. Payments received across multiple years report gain as payments arrive. Each payment's exclusion percentage follows the holding period at that receipt date.

AMT Treatment and the State Conformity Question

Section 1202 exclusions have historically escaped the alternative minimum tax. The act preserved that position for the new partial exclusions. The 50% and 75% tiers do not create AMT preference items.

Only legacy stock from before 2010 carries the old AMT preference treatment. That narrow carve-out matters to a small set of very long-term holders. Everyone else runs normal AMT calculations alongside the exclusion.

State conformity remains the practical wildcard. Many states follow federal Section 1202 automatically and inherit the tiers. California famously decoupled and taxes the excluded gain at ordinary rates.

Founders in nonconforming states should model the state layer first. The federal tier benefit can shrink meaningfully after state tax. Our state rates guide provides the starting map.

Section 1045 Rollovers With the Partial Exclusions

Section 1045 lets sellers roll QSBS gains into new QSBS stock. The reinvestment window runs sixty days from the sale date. The rollover historically deferred gain into the replacement stock's holding period.

The act's tier structure changes the rollover's arithmetic. Rollover gain that already used a 50% exclusion has complex carryover treatment. Practitioners expect guidance to clarify the interaction with the tier percentages.

Few rollover decisions should be made before that guidance arrives. Document the sixty-day window carefully whenever a reinvestment is planned. Missed windows convert deferral plans into immediate recognition events.

The rollover still works cleanly for full-exclusion scenarios. A five-year holder rolling into new stock preserves the exclusion entirely. Partial tiers simply add a documentation layer until regulators speak.

Old Stock Versus New Stock: The Hard Boundary

The enactment date splits every QSBS position into two regimes. Stock issued on or before July 4, 2025 follows the legacy five-year gate. Stock issued after that date earns the tiered schedule instead.

Founders holding both vintages should model exits stock-lot by stock-lot. A sale can pair legacy shares with newer shares for a blended result.

The lots age independently, and each follows its own statutory schedule. Careful lot-level records make the blended reporting painless at filing time.

Our complete QSBS exclusion guide covers the qualification tests in depth. The small business owners guide adds the entity-side view. Together they cover the full qualification checklist.

Estate and Gift Angles for QSBS Holders

The tier schedule also reshapes legacy planning for founders. Gifting QSBS to children or trusts transfers future exclusion capacity along with the shares. The recipient's holding period generally tacks onto the donor's for qualification purposes.

Appreciating stock moved early leaves the estate entirely. Growth after the gift escapes estate tax while preserving the recipient's tier clock. Families with large positions should coordinate the timing with their counselors.

The per-issuer cap applies at the taxpayer level after transfers. Gifting before an exit can effectively double the exclusion capacity across family members. That structural move remains one of the quieter benefits of the expansion.

Basis matters in every gifting decision involving qualifying stock. Gifting low-basis shares preserves the ten-times-basis election for recipients.

Gifting high-basis shares can waste the multiple entirely for a modest exit. Model both the dollar cap and the multiple before choosing any recipient.

Planning the Exit Timeline Around the Tiers

Deal structures increasingly reflect the tier calendar. Earnouts and staged closings can straddle thresholds when both sides agree. Founders should understand exactly which holding date governs each payment stream.

The tier calendar should shape negotiation strategy from the first offer. Each additional holding month now carries a quantifiable tax value. Sellers can price waiting periods into term sheets honestly.

• Map your acquisition date and tier thresholds before engaging buyers.
• Model after-tax proceeds at 50%, 75%, and 100% exclusion levels.
• Check the per-issuer cap against prior excluded gains from the same company.
• Verify your state's conformity position before committing to a close date.
• Consider installment structures that straddle a tier threshold deliberately.
• Preserve issuance documents, board minutes, and asset statements for every test date.

Buyers increasingly understand these tier dynamics too. Expect real negotiation over close dates when a boundary sits weeks away. The party who models the calendar first usually captures the difference.

One closing caution deserves the final word here. Qualification failures surface at the worst possible moment, usually during diligence. Professional review of the QSBS file costs little compared to a disallowed exclusion.