Qualified Small Business Stock (QSBS) refers to equity shares in certain small corporations that qualify for substantial federal tax benefits under Section 1202 of the Internal Revenue Code, potentially allowing investors to exclude up to 100% of capital gains from taxation when held for at least five years. To qualify, the company must be a C-corporation with gross assets under $50 million at the time of stock issuance, and at least 80% of its assets must be used in an active trade or business.
Why It Matters
QSBS represents one of the most powerful tax incentives available to angel investors and early-stage venture capitalists. The potential to exclude up to $10 million in gains (or 10 times the investment basis, whichever is greater) from federal taxation can dramatically improve investment returns—transforming a successful exit into an even more lucrative outcome. For investors choosing between multiple early-stage opportunities, QSBS eligibility can be a meaningful tie-breaker when all other factors are equal.
Example
An angel investor purchases 50,000 shares of a software startup for $100,000 in 2020 when the company had $5 million in assets. The company qualifies as a C-corporation engaged in active business operations. After holding the shares for six years, the investor sells them in 2026 for $5 million, realizing a $4.9 million gain. Because the shares qualify as QSBS and were held for more than five years, the investor can exclude 100% of the $4.9 million gain from federal taxation—saving approximately $1.2 million in federal capital gains taxes at the 23.8% rate. Without QSBS treatment, the investor would owe the full tax amount on their gain.