---
title: "What Is Qualified Small Business Stock (QSBS)?"
term: "Qualified Small Business Stock (QSBS)"
description: "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."
date: 2026-07-25T00:00:00.000Z
updated: 2026-07-25T00:00:00.000Z
topics: ["venture-capital"]
source: https://venturecapitaltracker.com/glossary/qualified-small-business-stock-qsbs
---

# What Is Qualified Small Business Stock (QSBS)?

> 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.

**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](/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](/glossary/cap-table), C-corp, and tax diligence on exits.

## FAQ

### What is QSBS in simple terms?

If you hold stock in a qualifying small U.S. C-corp for five years, federal tax law may let you exclude much of the gain when you sell — a major benefit for founders and early investors if rules are met.

### Why does QSBS matter?

It can materially increase after-tax proceeds on a successful exit. Investors diligence QSBS reps in term sheets; asset-heavy businesses, LLCs, and certain redemptions can break eligibility.


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Source: https://venturecapitaltracker.com/glossary/qualified-small-business-stock-qsbs