QSBS Section 1202 Tax Exclusion: 2026 Guide for Small Business Owners

The federal government's largest single tax benefit for small-business investors — up to $15 million of capital gain excluded from federal tax entirely. But it only works for C-corporations in qualifying industries, and most service-based S-corps and LLCs don't qualify. Here's who can use it, what OBBBA changed, and the math behind the decision.

What is QSBS?

Qualified Small Business Stock (QSBS) is stock in a qualifying C-corporation that meets the criteria of IRC §1202. When you sell QSBS after the required holding period, some or all of your capital gain is excluded from federal income tax. For a $5M gain that qualifies for 100% exclusion, that's roughly $1.1–1.2M in federal tax that simply doesn't exist.

Congress created Section 1202 in 1993 to incentivize investment in small businesses. The exclusion was expanded to 100% by TCJA in 2018, and the One Big Beautiful Bill Act (OBBBA, signed July 4, 2025) made further changes: raising the exclusion cap from $10M to $15M, expanding the gross-asset limit from $50M to $75M, and introducing a tiered 3/4/5-year holding period structure for stock issued after July 4, 2025.¹

Who qualifies for Section 1202?

All of the following must be true:

• C-corporation only. Not S-corps, LLCs, or partnerships. This is the most important threshold — if your business is an S-corp or LLC (as most service businesses are), QSBS does not apply.
• Original issuance. You must have acquired the stock directly from the corporation at its original issuance — not on a secondary market. Most startup founders and early investors qualify; buyers of existing businesses typically do not.
• Gross assets ≤$75M at issuance. The corporation's aggregate gross assets must not have exceeded $75M at the time of issuance (for post-OBBBA stock; $50M for stock issued before July 4, 2025). This is measured immediately after the investment round closes.²
• Active qualified business. The corporation must be engaged in a qualified active trade or business for substantially all of your holding period.
• Non-corporate taxpayer. Individuals, trusts, and pass-through entities can use the exclusion; C-corps cannot claim it.
• Holding period. For post-OBBBA stock: minimum 3 years for any exclusion. For pre-OBBBA stock: minimum 5 years for any exclusion.

Excluded industries under §1202(e)(3)

The following types of businesses do not qualify for QSBS regardless of their corporate structure. This is the second major filter that eliminates most small-business owners from eligibility:

What this means for most small-business owners on this site: If you're a consultant, financial planner, attorney, accountant, doctor, or any service professional operating through an S-corp or LLC — QSBS almost certainly does not apply. The two main reasons are (1) your entity is an S-corp or LLC, not a C-corp, and (2) professional services are explicitly excluded even for C-corps.

Who does qualify: Technology companies, SaaS businesses, manufacturers, distributors, e-commerce businesses, and other non-service C-corps with gross assets under $75M. If you're a founder who incorporated a technology startup as a C-corp, or you own shares in a tech or manufacturing company structured as a C-corp, Section 1202 is worth serious planning attention.

QSBS exclusion calculator

Estimate your federal tax savings from a QSBS-qualifying sale. State taxes are separate — many states, including California and Pennsylvania, do not conform to Section 1202 and tax the full gain.

OBBBA 2025: what changed for Section 1202

The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, made the largest changes to Section 1202 since TCJA. These apply only to stock issued after July 4, 2025. Pre-OBBBA stock continues under the prior rules.

The 28% rate trap for 3- and 4-year holds

Here's an often-missed detail: when you use QSBS at 50% or 75% exclusion (3 or 4-year holds for post-OBBBA stock), the non-excluded portion is taxed at a 28% federal rate — higher than the normal 20% long-term capital gains rate. Add 3.8% NIIT and the non-excluded portion is taxed at 31.8%.³

This means the 50% exclusion at 3 years has an effective federal rate of 15.9% (50% × 31.8%) — not 11.9% (50% × 23.8%). Still significantly better than 23.8% on the full gain, but not as dramatic as the headline percentage suggests. The 5-year full exclusion (0% federal, 0% NIIT) is by far the most powerful outcome.

Talk to a small-business exit planning advisor

State tax non-conformity

Section 1202 is a federal benefit. States are not required to conform, and many don't. Notably:

• California: Does not conform. The full gain is taxable at California rates (up to 13.3%). A $5M federal exclusion saves nothing in California.
• Pennsylvania: Does not conform.
• Minnesota, New Jersey, and others: Partial or no conformity depending on year and structure.
• Most other states: Conform, meaning the federal exclusion flows through to the state return.

For founders in California, the combined state + federal picture matters. $5M of gain excluded federally is still $665,000 in California state tax (at 13.3%). Some founders move to a no-income-tax state before a qualifying exit — a strategy that requires careful timing and actual change of domicile before the sale, not the day before closing.

Is QSBS realistic for most small business owners?

For the typical S-corp owner, consultant, or professional on this site — honestly, no. QSBS is effectively off the table because:

1. Most small businesses are S-corps or LLCs, not C-corps. Reincorporating as a C-corp has significant tax costs and complications.
2. Even if you reincorporated, professional services are excluded by statute (§1202(e)(3)) — consulting, financial advisory, accounting, law, and similar fields don't qualify.
3. You likely purchased equity in your own business (founder shares), but the original issuance requirement means the stock must have been issued by the corporation directly to you — which founders typically satisfy, but later buyers of existing businesses do not.

Who should take QSBS seriously: If you own stock in a technology company, manufacturing firm, SaaS business, or other qualifying C-corp that you received as a founder or early investor — and you expect to sell within the next 5+ years — Section 1202 planning could save you millions. The exclusion is permanent under OBBBA; there's no scheduled sunset.

If you're evaluating starting a new business and could choose between a C-corp and S-corp structure, and your business is in a qualifying industry, the long-term QSBS benefit can outweigh the S-corp's pass-through FICA advantage — especially if you expect a significant exit in 5+ years. See our C-corp vs. S-corp comparison for the full tradeoff analysis.

Stacking QSBS with other strategies

• Gift QSBS shares before a sale. Each recipient's exclusion applies separately. Gifting $15M of QSBS-qualifying shares to a spouse, trust, or children (each a separate taxpayer) multiplies the exclusion per recipient. However, the donor's holding period carries over, and gift tax rules apply.
• Qualified Opportunity Zone (QOZ) for deferred gain. If your gain exceeds the exclusion cap, the excess can be rolled into a QOZ investment to defer the remaining gain (though QOZ benefits have changed over time — confirm current rules).
• Estate planning integration. Gifting QSBS stock before a sale at a pre-sale valuation may qualify for the annual exclusion ($19,000/year per donee in 2026) plus the lifetime exemption ($15M post-OBBBA). See our estate planning guide for business owners.

Section 1202 documentation requirements

The IRS requires careful documentation to prove QSBS status at the time of a sale. Maintain records of:

• Stock certificates or cap table records showing original issuance date and consideration paid
• Corporation's gross asset documentation at the time of each issuance (audited financials or verified balance sheets)
• Business activity records demonstrating "active qualified business" status throughout the holding period
• Corporate tax returns showing C-corp filing status for the relevant years

Losing QSBS documentation — or discovering a disqualifying event (entity conversion, asset threshold breach) after you've sold — eliminates the exclusion retroactively. This documentation should be set up before you need it, ideally at formation.

1. QSBS Section 1202 OBBBA changes — tiered exclusion percentages (50%/75%/100% for 3/4/5-year holds), $15M per-issuer cap, $75M gross asset limit, effective July 4, 2025: McLane Middleton — OBBBA Changes to the QSBS Regime; Tax Adviser — QSBS Gets a Makeover. Pre-OBBBA stock (issued on or before July 4, 2025) governed by prior rules ($10M cap, 5-year hold required, $50M gross asset limit).
2. Section 1202 gross asset test: aggregate gross assets of the corporation must not exceed $75M at time of issuance (post-OBBBA); $50M for pre-OBBBA stock. Inflation adjustment applies to $75M amount beginning for tax years after 2026. Baker Tilly — Changes to Section 1202 in OBBBA; IRC §1202 via Cornell LII.
3. 28% rate on non-excluded §1202 gain for partial-exclusion stock; NIIT (3.8%) applies to the non-excluded portion: Hanson Bridgett — Timing is Everything for QSBS After OBBBA; RSM US — OBBBA Expands QSBS Exclusions. For 100% exclusion, excluded gain is not subject to regular tax, NIIT, or AMT.
4. §1202(e)(3) excluded industries (professional services, financial, hospitality, farming, mining): IRC §1202(e)(3) via Cornell LII; Millan + Co. — Section 1202 QSBS Tax Guide (2026).

Values verified as of June 2026. OBBBA signed July 4, 2025. Confirm QSBS qualification with a tax attorney before relying on the exclusion.

Related guides: Selling Your Small Business: Tax Planning Guide · C-Corp vs. S-Corp · Estate Planning for Business Owners · Business Succession Planning