QSBS Section 1202: How Founders Save Millions in Capital

Qualified Small Business Stock (QSBS) can exclude up to $10M in federal capital gains. Here's how to qualify, when to elect, and the traps to avoid.

QSBS: The $10M+ Federal Tax Exemption Most Founders Miss

QSBS (Qualified Small Business Stock) is Section 1202 of the IRS code — one of the most powerful tax benefits available to startup founders and early employees. Held correctly, it excludes up to $10M (or 10x basis, whichever is greater) in federal capital gains on exit. Structured incorrectly, the exemption disappears silently.

Requirements to qualify

The company must be a US C-corporation at the time of issuance. Total gross assets must be under $50M at the time of issuance and immediately after. Shares must be held for 5+ years before sale. Company must be in a qualified trade or business (excludes finance, professional services, real estate, farming, hospitality).

The math

Federal exemption: greater of $10M or 10x cost basis, per taxpayer, per company. On a $50M exit with $100K basis: full $10M federal exemption plus long-term capital gains treatment on the remainder. On a $500M exit with $500K basis: potentially $5M exempt (10x basis exceeds $10M).

State treatment varies

Fully conforming states (mirror federal): most states, including Texas, Florida, Washington. Partially conforming: New York (100% conformity as of 2024). Non-conforming (tax at ordinary state rates): California, Alabama, New Jersey, Pennsylvania. If you're a California founder, plan for state tax on gains even with federal QSBS.

Common ways founders lose QSBS

Converting from LLC to C-corp after gross assets exceed $50M. Failing to hold shares 5 full years before sale. Company drifts into non-qualified trade or business (e.g., adds financial services line). Redemption of shares by the company can taint QSBS status for all shareholders. Consult tax counsel before any material corporate transaction.

Frequently asked questions

Do SAFEs or convertible notes qualify for QSBS?
SAFEs and notes themselves do not qualify. QSBS holding period starts when the SAFE or note converts to preferred stock. Plan conversion timing carefully — early conversion starts the 5-year clock sooner.
Can employees qualify for QSBS?
Yes — any shareholder holding QSBS-qualified stock for 5+ years qualifies, including employees who early-exercised options and filed 83(b). Options themselves don't qualify; exercised stock does.
What if we exit before the 5-year mark?
You can defer gain by rolling proceeds into another QSBS-qualified company within 60 days (Section 1045 rollover). Complex but powerful — consult tax counsel before an early exit.

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