VC & PE Glossary
What Is Qualified Small Business Stock (QSBS)?
Updated
Definition
Qualified Small Business Stock (QSBS) is U.S. federal tax treatment under Section 1202 that can exclude a large portion — or all — of capital gains when investors sell stock of an eligible small C-corporation held for at least five years, subject to strict requirements.
Useful for: Founders, Investors
Qualified Small Business Stock (QSBS) refers to shares that may qualify for federal capital-gains exclusion under IRC Section 1202 when the issuing company and holder meet statutory tests and the stock is held five years or more.
How it works
The issuer must be a U.S. C-corporation under gross asset limits at issuance, active in a qualified trade or business — excluding certain fields like professional services and finance in many cases. Holders acquire stock at original issuance (with exceptions). Gains up to defined caps per issuer may be excluded depending on acquisition date and current law; state tax treatment varies.
Founders incorporating as /glossary/llc-vs-c-corp LLCs lose QSBS at the entity level. Stock redemptions, asset-heavy balance sheets, and ineligible industries trigger diligence flags. M&A buyers sometimes care about QSBS for rollover shareholders.
Why it matters
- Founders: Early C-corp choice and cap table hygiene preserve optionality for founder and employee shareholders.
- Investors: Angels and seed funds factor QSBS into return models; representations appear in legal docs.
- Counsel: Track aggregate gross assets and qualified business percentage through growth stages.
Common mistake
Assuming every startup stock automatically qualifies. LLC conversion timing, large cash balances, and non-qualified industries disqualify many otherwise “venture” companies.
Related ideas
Section 1202, /glossary/cap-table, C-corp, and tax diligence on exits.
Related terms
- Cap Table — A cap table (capitalization table) is the record of who owns equity in a company — shares, options, warrants, and convertible instruments — and how ownership percentages change after each financing.
- LLC vs C-Corp — LLC vs C-Corp is the choice between a flexible pass-through limited liability company and a C corporation — the standard Delaware C-Corp is what US venture investors require for equity financings and QSBS benefits.
Common questions
Short answers for founders, LPs, and operators