QSBS Under Section 1202: What OBBBA Changed and Why Your Issuance Date Is Everything

TL;DR: If you hold stock in a qualified small business, a domestic C-corp startup, typically, Section 1202 of the tax code can let you sell that stock and pay zero federal tax on some or all of the gain. The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, made this benefit meaningfully bigger, but only for stock issued after that date: the per-issuer exclusion cap rose from $10 million to $15 million, the company size limit rose from $50 million to $75 million in gross assets, and a new tiered schedule lets you claim a partial exclusion after just three years instead of waiting the full five (Gibson Dunn's July 2025 client alert breaks down all three changes in detail). I am not your CPA, and nothing here is tax advice. But if you hold founder shares, early employee options, or an angel check into a C-corp, you need to know which set of rules applies to your stock, and that depends entirely on one date: when the stock was issued.

Qualified Small Business Stock, or QSBS, is not a type of stock you buy on an exchange. It is a tax status. If your shares meet a specific set of requirements under Section 1202 of the Internal Revenue Code, you can exclude some or all of the capital gain when you sell them. That is not a deferral and not a discounted rate; it is an actual exclusion from federal taxable income. For a founder or early employee who rode a startup from a garage to a nine-figure exit, that status can be worth millions of dollars in avoided tax.

Congress created Section 1202 in 1993 to push capital toward small, domestic companies instead of public markets or foreign investment. The idea was simple: if you take the risk of funding or working for an unproven company, and you stick with it long enough, the government will let you keep more of the reward. The original version only excluded 50% of gain. Lawmakers sweetened it over the following two decades until, for stock acquired after September 27, 2010, the exclusion hit 100%. That 100%-after-five-years rule became the baseline every founder, employee, and angel investor has planned around for the last fifteen years. OBBBA is the first major rewrite since then.

What Makes Stock "Qualified"

Not every share of startup stock qualifies. Section 1202 sets out several tests, and all of them have to be met. I will walk through the big four in plain English, but treat this as a map, not a compliance checklist. The actual statutory language, which you can read yourself at Cornell Law School's Legal Information Institute, runs several thousand words and has tripped up plenty of experienced tax attorneys.

First, the issuer has to be a domestic C-corporation. Not an S-corp, not an LLC taxed as a partnership, not a foreign entity. If the company was ever an S-corp on the date your specific shares were issued, those shares are permanently disqualified from QSBS treatment, even if the company converts to a C-corp later. This is one reason so many startups incorporate as Delaware C-corps from day one.

Second, you generally have to acquire the stock at original issuance, meaning directly from the company, in exchange for cash, property, or services (including stock you get from exercising options or vesting on a stock grant). Buying shares secondhand from another employee on a private marketplace usually will not get you QSBS treatment on those shares. This is the "original issuance requirement," and it is the reason your cap table matters more than you might think.

Third, the company has to pass an active business test. At least 80% of its assets, by value, must be used in the active conduct of a qualifying trade or business. The statute excludes a long list of professional-services fields (law, accounting, health, financial services, consulting, and similar reputation-driven businesses), along with banking, farming, hotels, and a few other categories. A software company building a product generally clears this bar. A holding company sitting on cash or a law firm does not.

Fourth is the gross-assets test, which caps how big the issuing company can be. This is the one OBBBA changed, and it is where I want to slow down.

The OBBBA Changes: What Moved, and For Whom

Every major QSBS number just went up, but only for stock issued after July 4, 2025, the day President Trump signed OBBBA into law. Multiple law firms that track this closely, including Perkins Coie and Greenberg Traurig, describe this as the most significant change to Section 1202 since the 2010 amendment that created the 100% exclusion. Here is the side-by-side.

Feature	Old rules (stock issued on or before July 4, 2025)	New rules (stock issued after July 4, 2025)
Gross-assets test (company size cap)	$50 million, not indexed for inflation	$75 million, indexed for inflation starting in 2027
Per-issuer gain exclusion cap	Greater of $10 million or 10x basis ($5 million if married filing separately)	Greater of $15 million or 10x basis ($7.5 million if married filing separately), indexed for inflation starting in 2027
Holding period for exclusion	Must exceed 5 years for any exclusion; 0% below that	50% exclusion at 3 years, 75% at 4 years, 100% at 5+ years
Tax rate on non-excluded gain	28% rate, plus 3.8% net investment income tax	28% rate, plus 3.8% net investment income tax (unchanged)

Three things are moving at once. The gross-assets ceiling, meaning how big a company can be, measured by cash plus the adjusted basis of its other property right before and right after it issues the stock, rises from $50 million to $75 million. That means companies that already blew past $50 million in assets and could no longer issue QSBS-eligible shares can start issuing them again once they are under $75 million, according to McGuireWoods' analysis of the provision. The per-issuer cap, the most you personally can exclude from gains tied to one company's stock, rises from $10 million to $15 million. And the holding period, previously an all-or-nothing five-year cliff, becomes a tiered ramp: 50% exclusion at three years, 75% at four years, 100% at five or more.

That last change is the one I think gets underappreciated. Under the old rule, if you sold QSBS at year four, you got nothing: zero exclusion, full capital gains tax on the entire gain. Under the new rule, that same sale at year four excludes 75% of the gain. The gain that is not excluded gets taxed at a flat 28% rate, not the standard 20% long-term capital gains rate, and the 3.8% net investment income tax still applies on top of that, a detail Baker Tilly's year-end planning analysis works through with real dollar examples. So partial exclusion is good, but it is not free money on the taxable portion.

Why the Issuance Date Is the Only Thing That Matters

Here is the part I want every founder, early employee, and angel reading this to sit with: none of the new numbers apply to stock you already hold, unless that stock was issued after July 4, 2025. Not your purchase date. Not your vesting date. Not the date you exercised an option (though option exercise timing does affect other things, like your holding period start). The issuance date, meaning the date the company actually issued the shares to you, is the fact that controls which column of that table applies.

This creates two blocks of stock inside the same portfolio, sometimes inside the same company. If you got founder shares in 2022 and then bought more stock in a 2026 extension round, you are holding two separate QSBS blocks with two separate caps, two separate holding-period clocks, and two separate exclusion percentages. Paul Hastings' client alert and several other firms flag this same tracking requirement. You cannot average the two blocks together, and you cannot cherry-pick which set of rules to apply to a given sale.

Congress also closed the obvious workaround. You cannot exchange old, pre-July 4 stock for new stock in a tax-free reorganization or a Section 351 contribution just to reset the clock and grab the higher caps. The statute uses "tacking" rules under Section 1223 to carry the old acquisition date forward through most stock-for-stock exchanges, so a swap does not convert legacy stock into new-rules stock. If you are a founder currently restructuring (converting an LLC to a C-corp, doing a recapitalization, rolling equity into a new holding company), this is exactly the kind of transaction where you want a tax attorney checking whether you are accidentally forfeiting old-rules stock without gaining new-rules treatment.

My take, for what it is worth: the OBBBA changes make QSBS meaningfully more valuable for anyone getting new equity from here forward, whether that is a new hire, a new funding round, or an angel check written today. If you are negotiating a term sheet, joining a startup, or setting up a new C-corp, you can plan around the new numbers from day one. If you already hold pre-July 2025 stock, the changes do essentially nothing for you directly, though they may still shape strategy. Consider, for instance, whether you exercise options now, locking in an issuance date under the old rules, versus waiting for a new grant.

Stacking, Packing, and Why I Am Not Going to Walk You Through Them Here

If you spend any time in founder or angel circles, you will eventually hear about "stacking and packing," advanced strategies that use gifts to trusts to multiply the per-issuer exclusion across several separate taxpayers, and structuring moves that raise your cost basis to make the 10x-basis alternative cap bigger. Both exist in real practice, both are grounded in specific statutory provisions, and both can shelter substantially more gain than the standard cap for a founder facing a large exit.

They also carry real risk. The IRS has anti-abuse rules that can collapse multiple trusts into one if they are structured with overlapping beneficiaries and no purpose beyond tax avoidance, and Treasury officials have signaled they are watching aggressive versions of this planning closely. This is not a do-it-yourself project. If your expected gain is large enough that the standard $15 million cap would leave real money on the table, that is a conversation for an estate planning attorney and a CPA who specialize in QSBS, well before a sale is on the horizon, since a lot of this planning stops working once a deal is imminent.

What I Would Flag Before You Rely on Any of This

Two honest caveats. First, state conformity is a mess, and it will surprise people who assume federal and state tax treatment match. California does not conform to Section 1202 at all. The state adds the excluded gain back and taxes the entire amount at ordinary rates up to 13.3%, regardless of how long you held the stock or how the federal exclusion applies. A handful of other states, including Pennsylvania, Mississippi, and Alabama, also decouple from the federal exclusion in whole or in part. If you live in a non-conforming state, your federal tax bill might be zero while your state tax bill is very much not zero. Check your specific state before you build a plan around this.

Second, I am writing this as an explainer, not as advice for your specific situation. QSBS eligibility rules are fact-intensive. The active business test alone requires ongoing monitoring of exactly how a company's assets are used, not just a one-time check at issuance. Get a CPA or tax attorney who has actually done QSBS work to confirm your stock qualifies, confirm your issuance dates, and confirm your numbers before you make any decision based on an expected exclusion. A wrong assumption here is not a rounding error. It can be a seven-figure mistake.

For more on this, see our coverage of How to Build an Angel Investing Portfolio: The Math Behind Diversification, Angel Group Rankings and Market Data, How to Become an Accredited Investor in 2026: A Complete Guide, and Venture Debt: What It Is, Who Uses It, and When It Makes Sense vs. Equity.

Frequently Asked Questions

Does the QSBS holding period start when I exercise my stock options or when I'm granted them?

Your holding period generally starts on the date the stock is issued to you, which for most option holders means the exercise date, not the grant date. This is one more reason the exact issuance date matters and is worth confirming with your equity administrator or a tax advisor before you assume a given sale date clears the three-, four-, or five-year threshold.

Can a company that already exceeded the old $50 million gross-assets cap issue QSBS again under the new $75 million limit?

Yes, based on law firm analysis of the statute. A company that previously lost QSBS eligibility because its aggregate gross assets exceeded $50 million can issue new, qualifying stock again starting for issuances after July 4, 2025, as long as its gross assets stay under the new $75 million threshold at the time of that issuance.

If I already hold QSBS issued before July 4, 2025, is there any way to get the new, more generous rules applied to it?

No. The statute specifically incorporates holding-period "tacking" rules that prevent taxpayers from exchanging pre-enactment stock for new stock in a tax-free transaction just to access the higher caps or shorter holding period, so stock issued on or before July 4, 2025 stays under the old $10 million cap and five-year, all-or-nothing exclusion for its entire life.

Does the QSBS exclusion protect me from state income tax too?

Not necessarily — it depends entirely on your state. Some states fully conform to the federal Section 1202 exclusion, but others, most notably California, do not conform at all and tax the entire gain at the state level even when it is 100% excluded on your federal return, so you need to check your specific state's treatment separately from the federal analysis.

Author Disclosure: Jeff Barnes, MBA has no personal position in any company, fund, or platform named in this article. Angel Investors Network has no current commercial relationship with any party mentioned. AIN provides marketing and education services, not investment advice. Past performance does not guarantee future results. All investments involve risk, including loss of principal.