QSBS Tax Exclusion: Section 1202 Planning Guide (2026)

Section 1202 Qualified Small Business Stock is the single most valuable tax provision available to startup founders, early employees, and angel investors. Under current law — updated by the One Big Beautiful Bill Act in July 2025 — eligible investors can permanently exclude up to $15 million in capital gains per company from federal income tax. This guide covers who qualifies, how the OBBBA changed the rules, what the partial exclusions actually cost (the 28% surprise), how to multiply the cap through stacking, and when California wipes out most of the benefit.

What changed under OBBBA

For decades, §1202 required a 5-year hold for a 100% exclusion, with a $10M cap per taxpayer per company. The OBBBA (P.L. 119-21, signed July 4, 2025) made two structural changes for stock acquired after July 4, 2025:¹

The practical impact: A founder who issues new stock in 2026 in a company under $75M gross assets can exit after 3 years and exclude half the gain — something impossible under prior law. And for any exit in year 5+, the cap is now $15M (50% larger than before). Companies that previously had gross assets above $50M at issuance may now qualify under the $75M threshold.

Who qualifies: the §1202 eligibility checklist

All five conditions must be met, or the exclusion doesn't apply.

1. C-corporation only. S-corp stock, LLC membership interests, and partnership units are explicitly excluded. The company must be a C-corp at issuance and at the time of sale.¹
2. Original issuance — not secondary market. You must have acquired the stock directly from the company (at incorporation, through a SAFE, convertible note, or subsequent funding round). Buying shares from another investor on the secondary market does not qualify, even if the company meets every other criterion.
3. Gross assets at or below the threshold. The company's aggregate gross assets (including cash raised) must be $50M or less (pre-OBBBA) or $75M or less (post-OBBBA) immediately after the stock is issued. A Series D company that had $80M in gross assets when you received your equity does not qualify — even if it was smaller earlier.
4. Active qualified trade or business. At least 80% of company assets must be used in an active business throughout your holding period. The following industries are excluded from §1202 regardless of other qualifications: professional services (law, accounting, consulting, financial services, health/medicine), banking, insurance, financing, leasing, investing, hotels, restaurants, and performing arts. Technology companies, manufacturing, retail, and most other sectors qualify.
5. Domestic corporation. The company must be incorporated in the United States (or a U.S. territory). Foreign corporations don't qualify.

QSBS Tax Savings Calculator

Compare your federal tax bill with and without the §1202 exclusion. Enter your expected gain, basis, and holding scenario. State taxes shown separately — see the California section below.

The 28% rate surprise on partial exclusions

The most misunderstood aspect of the tiered exclusion: the non-excluded portion at the 3-year and 4-year hold tiers is not taxed at the standard 20% long-term capital gains rate. It is taxed at a maximum rate of 28% under §1202(a)(3).² This is the same rate applied to collectibles (art, coins, precious metals).

For a founder in the 37% ordinary income bracket who exits after 3 years with a $6M gain:

The 28% rate matters most when the fully-included gain would have been at 20%. At 3 years: the effective rate on the taxable half jumps from 20% to 28%, costing ~$120K extra on a $6M gain. If your planned exit is 3–4 years out, pushing to 5 years meaningfully changes the math — both by excluding more gain and by escaping the 28% penalty rate.

QSBS stacking: multiplying the cap across taxpayers

The §1202 exclusion limit is per taxpayer per issuer. This creates a legitimate planning strategy: transfer shares to additional taxpayers before a liquidity event, so each taxpayer claims their own separate cap.

Common stacking approaches

• Spousal gift. A gift of QSBS to a spouse (or anyone, really) transfers the QSBS holding period clock, so the recipient gets their own $15M cap. Two spouses filing jointly share one cap — you need separate ownership, not just separate filers on the same return. Gifting to an adult child who files separately creates a second cap.
• Gifts to children/heirs. Annual gifts of QSBS shares to adult children ($19K per recipient per year, or $38K per couple per recipient in 2026 per IRS Rev. Proc. 2025-67) preserve the carryover holding period. Each adult child gets their own $15M cap.
• Irrevocable grantor trusts. A non-grantor irrevocable trust can hold QSBS and claim a separate $15M exclusion, though the rules here are complex — the trust must be non-grantor at the time of sale, and certain trust types may not qualify. This should be structured with an experienced estate attorney familiar with §1202.

Key stacking rules

• Transfers by gift or inheritance carry over the original holder's holding period — you don't restart the clock on a gift.
• Each non-grantor trust or separate taxpayer gets their own cap, but the same per-issuer limit applies (one person cannot stack multiple caps on the same company across multiple entities they control).
• Sales to third parties don't qualify — only gifts or inheritance transfers.

The California problem (and other non-conforming states)

California does not conform to §1202 for stock acquired after 2012. In California, the entire gain — including any federally excluded amount — is subject to state income tax at regular rates (up to 13.3% for high earners). No exclusion. No partial exclusion. The federal exclusion is irrelevant at the state level.³

Other states that do not conform to §1202:

For a California resident with a $10M QSBS gain (100% excluded at the federal level): federal tax = $0, state tax = $1.33M+. This dramatically changes the planning calculus. Pre-exit relocation to Nevada, Texas, or Florida is a strategy some founders pursue — but California's 546-day rule and residency audit risk mean it must be planned years in advance, not weeks before close. See our state income tax planning guide for the residency change framework.

Section 1045: rolling QSBS gains into new QSBS

If you sell QSBS before the 5-year mark and want to defer the gain rather than pay tax, §1045 allows you to roll the proceeds into new qualifying small business stock within 60 days of the sale. The gain is deferred, and the holding period from the original QSBS carries over to the replacement stock.⁴

The use case: You invested in a company in 2022, it was acquired in 2025 (3 years later), and you received cash. Under pre-OBBBA rules, 3 years doesn't qualify. Under §1045, you can take that cash and reinvest it into a new QSBS-eligible company within 60 days, preserving the gain deferral and adding 2+ more years toward the new company's holding period.

Conditions: The replacement stock must meet all §1202 requirements. The rollover must be completed within 60 days. You can only roll gains, not full proceeds including basis. And critically: after OBBBA, if you originally held pre-OBBBA stock and roll into post-OBBBA qualifying stock, the new stock's issuance date controls the applicable rules — you get OBBBA's 3-year tiered exclusion for the new investment.

5 QSBS planning mistakes that erase the benefit

1. Converting from S-corp or LLC to C-corp too late. If you structure as an LLC or S-corp and convert to C-corp after your company grows past $50M–$75M gross assets, the stock you receive in the conversion won't qualify. QSBS planning must start at formation — or during an early-stage funding round before the gross asset threshold is crossed.
2. Selling before the threshold hold. Under pre-OBBBA rules, a 4-year, 11-month sale gets $0 exclusion (one month short of the 5-year requirement). Under post-OBBBA rules, the thresholds are at 3, 4, and 5 years exactly. If your company acquisition timeline is uncertain, model both the 100% and the partial-exclusion outcomes — the difference between a 4-year and 5-year exit can be millions of dollars.
3. Triggering the gross asset test via capital raises. If your company raises a Series C that pushes post-money gross assets above $75M (post-OBBBA) or $50M (pre-OBBBA), any stock issued after that raise doesn't qualify. Existing QSBS is grandfathered, but new equity grants to employees or new-round investors won't be QSBS-eligible. Founders often don't realize that early employees hired after a large raise are holding non-qualifying stock.
4. Assuming California residents get full federal savings. As covered above, California taxes the full gain regardless of the §1202 exclusion. Founders who relocate to a no-income-tax state, if done properly years in advance, can save 13.3% in addition to the federal exclusion — but relocation must be genuine and the California Franchise Tax Board audits high-income departures aggressively.
5. Missing the 60-day §1045 rollover window. If you sell before 5 years and don't execute a §1045 rollover within 60 days, the gain is taxable in the year of sale. There's no extension and no retroactive election. If you're considering a rollover, identify the replacement investment before the sale closes — you'll need 60 days from settlement date, not from closing date of negotiations.

QSBS and DAF: eliminating tax on non-excluded gain

For partial exclusions (3-year or 4-year exits), the non-excluded portion is still a large taxable gain. One strategy for founders with charitable intent: contribute the non-excluded shares to a donor-advised fund before closing. The DAF receives the full fair market value, the 30% AGI deduction applies to the contribution, and the gain in donated shares is never recognized — even at the 28% §1202 rate.

The mechanics require that the DAF contribution happen before a binding purchase agreement is signed. See our DAF guide and charitable giving guide for timing rules and AGI limits.

Sources

1. McLane Middleton — OBBBA Changes to §1202: Comprehensive Overview (2025); BeanCount.io — §1202 After OBBBA (2026). For stock issued after July 4, 2025: 50%/75%/100% exclusion at 3/4/5-year hold, $15M cap (or 10× basis), $75M gross asset threshold. For stock issued on or before July 4, 2025: prior rules apply — 100% exclusion at 5-year hold, $10M cap (or 10× basis), $50M gross asset threshold. P.L. 119-21 enacted July 4, 2025. Cap inflation-indexed from 2027.
2. Surgent CPE — Section 1202 QSBS 2026: OBBBA Changes. Non-excluded §1202 gain at the 3-year and 4-year tiers is subject to a 28% maximum rate per §1202(a)(3), not the standard 20% LTCG rate. OBBBA eliminated the AMT preference item on excluded gain by amending §57(a)(7). NIIT (3.8% per IRC §1411) applies to non-excluded gain included in net investment income.
3. SDO CPA — QSBS Guide 2026 (State Conformity). California does not conform to §1202 for stock acquired after 2012 — full gain taxed at California ordinary income rates (up to 13.3% + 1% MHST on $1M+). New Jersey, Pennsylvania, Alabama, and Mississippi also do not conform. Massachusetts conforms only for 100% exclusions. All other states generally conform or have no state income tax.
4. IRC §1045 — Rollover of Gain from Qualified Small Business Stock to Another Qualified Small Business Stock (Cornell Law). Allows deferral of QSBS gain by reinvesting in new QSBS within 60 days of sale. Holding period of original QSBS carries over to replacement stock. Election must be made in the year of sale on an original or amended return.
5. IRS Publication 550 — Investment Income and Expenses (§1202 overview); IRC §1202 — Partial Exclusion for Gain from Certain Small Business Stock (Cornell Law). LTCG rates for 2026 per IRS Rev. Proc. 2025-67: 0% below $49,450/$98,900; 15% up to $545,500/$613,700; 20% above for single/MFJ. NIIT per IRC §1411: 3.8% above $200K/$250K. Gift exclusion $19K per recipient 2026 per IRS Rev. Proc. 2025-67. Values verified October 2026.

QSBS rules reflect One Big Beautiful Bill Act (P.L. 119-21, July 4, 2025). Tax rates reflect 2026 IRS inflation adjustments per Rev. Proc. 2025-67. State tax information reflects 2026 state rates. This page does not constitute tax or legal advice — QSBS planning involves complex facts-and-circumstances analysis requiring a qualified CPA and attorney experienced in §1202.