Qualified small business stock can wipe out federal tax on millions of dollars of gain. But the stock only qualifies if the company — and the way you got your shares — clears a specific set of tests. Here is what qualifies, what doesn't, and the examples that trip people up.
Section 1202 of the tax code lets an individual exclude capital gain on the sale of qualified small business stock — QSBS — from federal income tax. For stock issued after July 4, 2025, the amount you can exclude is the greater of $15 million or ten times what you paid for the stock, per company. For stock issued earlier, it's $10 million or ten times your cost. And the cap is per person, which is what makes gifting and trust planning so powerful.
That is a large benefit, so the rules are specific. Most of the disappointment around QSBS doesn't come from the planning — it comes from discovering, late, that the stock never qualified in the first place. This paper is the front-end check: before anyone talks about multiplying the exclusion, the stock has to earn it.
Strip away the jargon and QSBS comes down to six conditions. Miss any one and the stock doesn't qualify — no matter how good the rest of the plan looks.
It's a U.S. C corporation.
The company has to be a domestic C corporation when you receive the shares and for essentially the whole time you hold them. S corporations and LLCs don't qualify at issuance — and converting later doesn't fix stock you already hold.
It was small when you got in.
The company's total gross assets had to be at or under $75 million ($50 million for pre–July 2025 stock) at the moment your shares were issued and right after. A company can grow to be worth far more later — what matters is its size when the stock was issued.
You got the stock at original issue.
You have to acquire the shares directly from the company — for cash, property, or services — not buy them from another shareholder. Stock bought on the secondary market generally doesn't qualify.
The company actually runs a real business.
At least 80% of the company's assets must be used in the active conduct of a qualified trade or business. A company sitting on mostly cash or investments can fail this even if it looks like an operating business.
It's the right kind of business.
Some industries are carved out by name — professional services, finance, hospitality, farming, and extraction. This is the test most people get wrong, so Sections 3 and 4 walk through it with examples.
You hold it long enough.
Five years gets you the full exclusion. For stock issued after July 2025, you get a partial break sooner — 50% at three years, 75% at four, 100% at five. (Gifts don't reset this clock; the recipient picks up your holding time.)
One more, easy to overlook: you can't be a corporation yourself. The exclusion belongs to individuals, and to trusts and estates — which is the door that gifting and stacking walk through.
The good news for most founders: if you make something, build something, or sell a product, you are probably in qualifying territory. The exclusions are aimed at a list of specific industries (Section 4); everything outside that list is generally fair game, as long as the company runs a real, active business.
Businesses that typically qualify:
The tax code names the businesses that are excluded. The theme is consistent: Congress wanted to reward investment in companies that build and scale, not in personal-services or financial businesses. The carve-outs are:
| This company | QSBS? | Why |
|---|---|---|
| Food manufacturer (packaged goods, sold wholesale) | Yes | Manufacturing a product — not on any excluded list. |
| Restaurant or restaurant group | No | Hospitality is excluded by name. |
| Medical device company | Yes | Makes a product; not the practice of medicine. |
| Medical or dental practice | No | Performing services in the field of health. |
| Software / SaaS company | Yes | Product- and technology-driven. |
| IT or management consulting firm | No | Consulting is excluded; value is the team's expertise. |
| Consumer brand selling its own products | Yes | Product business, not personal services. |
| Engineering or architecture firm | No | Both are named exclusions, even though they build things. |
Yes — a food manufacturer generally qualifies. Making and selling a food or beverage product is manufacturing. It isn't on any excluded list, and its value comes from the product, the brand, and the plant — not from the personal skill of a few employees. A company that produces packaged food and sells it to retailers or distributors is squarely the kind of business §1202 was written to encourage.
The contrast is the lesson. A restaurant that cooks and serves food is hospitality — excluded. So the same word — "food" — lands on opposite sides of the line depending on what the business actually does: manufacture a product, or operate a hospitality venue.
Three more traps worth knowing before you assume the stock qualifies:
Qualification is the front door. Once the stock clears these six tests, the planning question opens up: the exclusion is per taxpayer, so gifting shares to family members and non-grantor trusts before a sale can multiply it. That's a separate body of work — with its own timing rules and its own audit exposure.
If you're past qualification and into planning, three companion resources pick up where this one ends: how gifting actually works, a checklist of what the IRS examines, and the defensibility framework for multi-trust stacks.
Read Gifting QSBS for how founders multiply the exclusion before a sale, work the QSBS Defensibility Checklist to see what the IRS examines, or go deep on multi-trust structure in the Defensibility Framework. All educational — none is advice.
Not advice. This page is published for general educational and informational purposes. It does not constitute legal, tax, accounting, financial, or investment advice for any specific person or situation. The examples are simplified illustrations; real qualification turns on the full facts and the precise statutory and regulatory tests, which involve material complexity and risk.
Not a law firm. Socrates Crayon is an educational resource. It is not a law firm, registered investment adviser, broker-dealer, or accounting firm. No attorney-client, fiduciary, broker-dealer, or other professional relationship is created by use of this page, and no tax or legal opinion is rendered.
Consult qualified counsel. Whether any particular company or stock qualifies under §1202 requires analysis by qualified tax and legal counsel applied to the specific facts. Tax law is subject to change; thresholds and rules described here (including the OBBBA changes effective July 4, 2025) reflect publicly-available information current as of June 2026.