For decades, one of the most powerful — and most overlooked — tax breaks in the entire code has been Qualified Small Business Stock, or QSBS. Under Section 1202, founders and early investors who hold the right kind of stock long enough can walk away from a sale with millions of dollars in gains completely free of federal tax. The catch was always the fine print: a rigid five-year holding period, a $10 million cap, and a company-size limit that many growing businesses blew past before they realized the benefit existed.
The One Big Beautiful Bill Act (OBBBA), signed into law in 2025, just made QSBS dramatically more generous — and dramatically more relevant to ordinary small businesses, not just venture-backed tech startups. For stock issued after July 4, 2025, the holding period is shorter, the exclusion cap is bigger, and far more companies now qualify. Here is what changed for 2026 and how to position your business to capture it.
What Is QSBS, and Why Does It Matter So Much?
QSBS is stock in a domestic C corporation that meets a specific set of requirements under Section 1202. When you sell qualifying stock after meeting the holding period, you can exclude a large share — often 100% — of your capital gain from federal income tax. There is no other provision quite like it: it is not a deferral, not a deduction, but a genuine exemption on some of the largest gains a business owner will ever realize.
To qualify, the stock generally must meet these core tests:
- C corporation only. The issuer must be a domestic C corporation — not an S corp, LLC, or partnership — both when the stock is issued and while you hold it.
- Original issuance. You must acquire the stock directly from the company (for cash, property, or services), not on the secondary market.
- Active business. At least 80% of the company’s assets must be used in an active qualified trade or business.
- Excluded industries. Certain fields do not qualify — notably health, law, accounting, consulting, financial services, and other businesses whose principal asset is the reputation or skill of their employees.
The Three Big Changes for 2026
The OBBBA rewrote three of the most limiting features of the old rules. Critically, these changes apply only to stock acquired after July 4, 2025 — older stock still lives under the prior regime.
1. A Shorter, Tiered Holding Period
Under the old law, you had to hold QSBS for a full five years to exclude anything — hold it four years and eleven months, and you got nothing. The new rules introduce a tiered exclusion that rewards patience without demanding all-or-nothing timing:
New QSBS Holding-Period Tiers (stock acquired after July 4, 2025)
- Hold 3 years → exclude 50% of eligible gain.
- Hold 4 years → exclude 75% of eligible gain.
- Hold 5+ years → exclude 100% of eligible gain.
This is a meaningful shift for founders who exit earlier than planned. A three-year hold now delivers real, partial relief instead of nothing — which changes the math on acquisition offers and secondary sales.
2. A Higher Exclusion Cap: $15 Million
The per-issuer exclusion cap jumped from $10 million to $15 million (and, as before, you can instead use 10 times your basis if that is greater). Beginning in 2027, the $15 million figure will be adjusted annually for inflation — the first time the cap has ever been indexed.
3. A Larger Company Qualifies: $75 Million in Assets
To issue QSBS, a company’s aggregate gross assets must stay under a ceiling at the time the stock is issued. The OBBBA raised that ceiling from $50 million to $75 million, also indexed for inflation going forward. That expansion pulls thousands of established, profitable small and mid-sized businesses into a benefit that used to be the exclusive province of early-stage startups.
QSBS is one of the only places in the tax code where the reward for planning years ahead is measured in millions of tax-free dollars. The businesses that capture it are the ones that structured correctly on day one — not the ones that discovered it the week before a sale.
Old Rules vs. New Rules at a Glance
| Feature | Old Rule (stock through July 4, 2025) | New Rule (stock after July 4, 2025) |
|---|---|---|
| Holding period | 5 years, all-or-nothing | Tiered: 50% at 3 yrs, 75% at 4 yrs, 100% at 5 yrs |
| Exclusion cap | Greater of $10M or 10× basis | Greater of $15M or 10× basis (indexed) |
| Gross asset limit | $50 million | $75 million (indexed) |
| Entity type | C corporation | C corporation |
Who Should Be Paying Attention?
QSBS is no longer just a Silicon Valley conversation. The higher asset limit means it now reaches a much broader set of owners:
- Founders planning an eventual sale. If a business exit is anywhere on your five-year horizon, the entity you operate under today directly determines whether that gain is taxable.
- Businesses weighing C-corp vs. pass-through status. The old default advice to avoid C corporations deserves a fresh look. The trade-off between C-corp double taxation and a multimillion-dollar QSBS exclusion is exactly the kind of decision worth modeling carefully — and it connects directly to the LLC vs. S-corp choice many owners revisit as they grow.
- Early investors and employees with founder stock. Anyone receiving equity at original issuance may be sitting on a future exclusion they do not yet know about.
The one group that generally cannot use QSBS: service-based firms in the excluded fields, including medical, legal, and accounting practices. Those owners are not shut out of tax planning, though — there are other powerful levers available, which our medical practice finance and tax preparation and strategy teams build around.
How to Position Your Business Now
Because QSBS status is locked in largely by decisions made at issuance, the planning has to happen before a sale is on the table. A few priorities:
- Confirm your entity. Only C-corporation stock qualifies. If you operate as an LLC or S corp and an exit is plausible, a conversion may be worth modeling — but timing and basis matter enormously.
- Document the date and terms of issuance. Your holding period, gross-asset test, and eligibility all trace back to issuance records. Clean, contemporaneous documentation is the foundation, which is why disciplined bookkeeping and accounting pays off years later.
- Watch the asset ceiling. The $75M gross-asset test is measured at issuance. Fast-growing companies should issue qualifying stock before they cross the line.
- Coordinate the exit. The difference between selling at 2 years, 11 months and 3 years can be worth millions. This is where proactive CFO and advisory guidance turns a rule into real money.
QSBS also interacts with how you value and structure a sale in the first place — a subject we cover in our guide on how to value your small business. Getting the valuation, the entity, and the timing to line up is the whole game.
The Bottom Line
The 2026 QSBS expansion is one of the most founder-friendly tax changes in years. A shorter holding period rewards earlier exits, a $15 million cap protects more of your gain, and a $75 million asset limit opens the door to businesses that never thought they qualified. But none of it is automatic — the exclusion is earned through the structure you put in place long before you sell.
Wondering whether your business could qualify for a QSBS exclusion, or whether a C-corp conversion makes sense for your exit plan? Schedule a free consultation and our tax strategy team will map out exactly how the new Section 1202 rules apply to your situation — so that when you do sell, the gain that stays in your pocket is as large as the law allows.
