QSBS and Section 1202: Why Your Entity Choice Matters for California Founders

What Is QSBS, and Why Does Entity Choice Decide It?

Qualified small business stock (QSBS) is stock in a domestic C corporation that can qualify for a federal capital gains exclusion under Internal Revenue Code Section 1202. For stock issued before or on July 4, 2025, founders and investors may exclude up to $10 million of gain, or 10 times the basis if that is greater. For stock issued after July 4, 2025, founders and investors may exclude up to $15 million of gain, or 10 times their basis if that is greater. S-Corporation stock does not qualify. LLC interests do not qualify either.

That makes the entity form you check on a filing a decision with eight-figure stakes. Most California business owners choose an S-Corp for one reason: it avoids double taxation on profits. That is often the right call for a business that will distribute its earnings every year. It can be the wrong call for a business that plans to grow, raise capital, and sell.

What Section 1202 Provides

Section 1202 lets a non-corporate taxpayer exclude gain on the sale of QSBS from federal gross income. The One Big Beautiful Bill Act (Public Law 119-21), signed July 4, 2025, made the largest changes to the section since it was enacted in 1993. The new rules apply only to stock acquired after July 4, 2025.

*Stock issued before August 11, 1993, is not eligible because Section 1202 applies only to stock originally issued after the Revenue Reconciliation Act of 1993.

For stock acquired after July 4, 2025, the amount goes up to $15 million and will be subsequently indexed for inflation for tax years beginning after 2026.

The cap applies per taxpayer, per issuing company. A founder with near-zero basis who sells for a $20 million gain after five years could exclude $15 million. The remaining $5 million would be taxed as long-term capital gain.

The Requirements to Qualify

Stock qualifies as QSBS only if every one of these tests is met. Missing one usually means missing the exclusion entirely.

1. C-Corporation status. The issuer must be a domestic C corporation when the stock is issued. It must also remain a C corporation during substantially all your holding period (Section 1202(c)).
2. Original issuance. You must acquire the stock directly from the company in exchange for money, property, or services. Shares bought from another shareholder do not qualify.
3. Aggregate gross assets ceiling. For stock issued on or before July 4, 2025, the company’s aggregate gross assets cannot exceed $50 million at any time before the issuance or immediately after it (Section 1202(d)). For stock issued after July 4, 2025, the limit is $75 million.
4. Active business. At least 80% of the company’s assets, by value, must be used in a qualified trade or business (Section 1202(e)).
5. A qualified trade or business. Section 1202(e)(3) excludes services in health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, and brokerage. It also excludes any business whose principal asset is the reputation or skill of its employees. Banking, insurance, financing, leasing, investing, farming, mining and extraction, hotels, motels, and restaurants are excluded too.
6. No disqualifying redemptions. Certain stock buybacks around the issuance date can disqualify shares (Section 1202(c)(3)).
7. Holding period. At least three years for any exclusion on post-July 4, 2025 stock.

C-Corp vs. S-Corp Through the QSBS Lens

A C-Corp pays tax on its profits now in exchange for a potential federal exclusion at exit. An S-Corp avoids corporate-level tax now but gives up QSBS entirely. Which trade is better depends on how the business will make its owners money.

When a C-Corp may make more sense

Consider a C-Corp if you expect to raise outside capital, reinvest profits instead of distributing them, and sell the company within a three- to ten-year horizon. Under those facts, the federal exclusion on a large sale can outweigh years of double taxation on modest dividends.

When an S-Corp may make more sense

Consider an S-Corp if the business generates steady profits that you take home each year, and a sale is distant or unlikely. A professional services firm is a common example. Many of those firms would fail the qualified-business test anyway, so QSBS is not an incentive.

The California Catch

California Revenue and Taxation Code Section 18152 provides that the federal exclusion does not apply for California purposes. A gain that is fully tax-free federally is fully taxable in California.

The numbers are significant. California taxes capital gains as ordinary income at rates progressively going up to 13.3%. On a $15 million gain excluded federally, a California resident could still owe close to $2 million in state income tax.

Some founders consider moving before a sale, but the Franchise Tax Board closely examines residency changes timed around a large liquidity event. A move made only for tax reasons, (i.e. close to a sale) can draw an audit.

Key Takeaways

• Only domestic C-Corporation stock can be QSBS. S-Corp stock and LLC interests do not qualify.
• For stock issued after July 4, 2025, Section 1202 excludes 50%, 75%, or 100% of federal gain after three, four, or five years.
• For stock issued after July 4, 2025, the exclusion is capped at the greater of $15 million or 10 times the basis, per taxpayer, per company.
• California does not conform, so California residents still owe state tax of up to 13.3% on the full gain.

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This post is for informational purposes only and does not constitute legal advice. For advice on your specific situation, consult a qualified attorney.