Qualified Small Business Stock: A Tax Break Worth Knowing About
If you’ve started a company, joined an early stage startup, or invested as an angel, there’s a decent chance you’re sitting on one of the most generous tax breaks in the entire code and don’t even know it. It’s called Qualified Small Business Stock (QSBS), and it lives in Section 1202.
The Basic Idea
If you own stock in a domestic C corporation that meets a few requirements, and you got that stock directly from the company (not bought from another shareholder on a secondary market), you may be able to exclude a large chunk of your gain when you eventually sell. For a lot of founders and early employees, this turns into a six or seven figure tax savings.
What Makes a Company Qualify
To qualify, the company has to be:
- A C corporation
- Running an active trade or business (holding companies and a list of service businesses like law firms, accounting firms, and financial services don’t count)
- Under a certain gross assets threshold at the time the stock was issued
The One Big Beautiful Bill, passed in July 2025, actually loosened a lot of these rules — so it’s worth understanding both the old and new versions depending on when you got your shares.
The Old Rules (Stock Issued On or Before July 4, 2025)
- You need to hold the stock for more than five years
- Depending on when you got it, you can exclude 50%, 75%, or 100% of your gain (most stock issued after September 2010 qualifies for the full 100%)
- The exclusion is capped at the greater of $10 million or ten times your basis in the stock
The New Rules (Stock Issued After July 4, 2025)
The rules got noticeably better:
- 3-year hold: 50% exclusion
- 4-year hold: 75% exclusion
- 5-year hold: full 100% exclusion (unchanged)
- Cap: jumped from $10 million to $15 million per issuer
- Company gross asset limit: went from $50 million to $75 million, both indexed for inflation going forward
One Catch Worth Flagging
If you sell at the three or four year mark and use the partial exclusion, the taxable portion of your gain doesn’t get the normal long-term capital gains rate. It gets taxed at 28%, the same rate that applies to collectibles. So the math still favors waiting the full five years if you can.
Why Timing Matters
QSBS planning works best when you think about it early — ideally before you even take the investment or accept the equity grant — because some of the eligibility tests look at the company’s status at the moment the stock was issued.
Bottom Line
If you’ve got founder stock, ISOs you’ve exercised, or an angel investment in a C corp, it’s worth a conversation to confirm whether you actually qualify and what your numbers could look like at exit. This is one area where a half-hour planning session now can be worth a great deal more later.
Disclaimer: This article is for general informational purposes only and is not tax or legal advice. Consult a CPA for guidance specific to your situation.
Questions? Leave a comment or reach out at saileshrapolu.com.
