QSBS: The $15M+ Tax Break Every Founder Should Know
If you're building a C Corporation, there's a tax benefit that could save you millions: Qualified Small Business Stock (QSBS) under Section 1202.
Done correctly, QSBS allows you to exclude up to $15 million (or 10x your basis, whichever is greater) in capital gains from federal taxes when you sell your company or go public.
What is QSBS?
QSBS is a federal tax incentive designed to encourage investment in small businesses. If your stock qualifies, you can exclude up to 100% of your capital gains from federal taxation.
Example: You start a company with $100K. Five years later you sell it for $15M. With QSBS, you could owe $0 in federal capital gains tax on that $14.9M gain.
QSBS Requirements
Your stock must meet ALL of these criteria:
1. C Corporation
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Must be a C Corp when stock is issued and held
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LLCs and S Corps don't qualify (but you can convert)
2. Qualified Business
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Gross assets under $75M when stock is issued
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Must be an active business (not passive investment)
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Certain industries are excluded: health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage, banking, insurance, farming, and hospitality
3. Original Issuance
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You must acquire stock directly from the company
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No buying from other shareholders
4. Holding Period
QSBS uses a tiered exclusion structure based on how long you hold the stock:
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3+ years: 50% of the gain excluded
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4+ years: 75% of the gain excluded
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5+ years: 100% of the gain excluded
The clock starts from the date of issuance.
5. Active Business Test
- 80%+ of the company's assets must be used in active business operations
Common QSBS Mistakes
Starting as an LLC: Many founders start as an LLC for simplicity, then convert to C Corp later. This works, but you lose QSBS time. The clock starts when C Corp stock is issued, not when the business was formed.
Waiting to structure: Every day you delay incorporation as a C Corp is a day longer until you can exit tax-free.
Exceeding $75M in gross assets: Once you cross $75M in assets, new stock issuances don't qualify. Early employees might not get QSBS if the company has grown past the threshold by the time their stock is issued.
Wrong business activity: Consulting, financial services, hospitality, and professional services are all ineligible. Check before you assume your business qualifies.
Maximizing QSBS Benefits
Stack with family members: Each shareholder gets their own $15M exclusion. Through proper planning, a spouse and children can each hold qualifying stock with separate exclusion caps. Gifts of QSBS carry over the original holding period and basis.
Use non-grantor trusts: Grantor trusts share the grantor's exclusion cap. Non-grantor trusts are treated as separate shareholders and get their own $15M exclusion. A founder, spouse, and multiple trusts can multiply the total exclusion significantly.
Multiple companies: The $15M limit is per-company, not per-person. Serial founders can use QSBS on each qualifying company.
Plan from day one: Structure correctly at formation. Retrofitting is harder and costs you time on the holding period clock.
State Tax Considerations
QSBS is a federal benefit. State treatment varies. Some states (like California) do not honor the exclusion. Others (like Florida and Texas, with no state income tax) make it even more powerful. Check your state's rules before counting on a full exclusion.
This information is presented for educational purposes only and should not be construed as tax, legal, or investment advice. These rules are highly fact-specific. Tax rules and IRS guidance may change, and tax treatment depends on individual circumstances. Whenever making an investment decision, please consult with independent legal, tax, and accounting professionals.