Who Qualifies for the QSBS Exclusion? (w/Examples) + FAQs

Quick Answer

You qualify for the QSBS exclusion if you hold stock in a U.S. C corporation that had under $75 million in assets when you bought it, you got the shares at original issuance, and you hold them long enough. For 2025, gain on qualifying stock can be 50% to 100% tax-free, up to $15 million or 10x your basis.

This article reflects federal rules and state rules as of June 2026 and covers tax year 2025. Tax law changes — confirm current figures before you file.

The Qualified Small Business Stock (QSBS) exclusion under Internal Revenue Code Section 1202 lets certain investors and founders skip federal tax on a large chunk of their gain when they sell startup stock. The catch is that the rules are strict, and one missed detail — the wrong entity type, a buyback at the wrong time, or selling too early — can turn a tax-free windfall into a fully taxed one. The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, made this break far more generous for stock bought after that date.

Timing now matters more than ever, because the law treats stock bought on or before July 4, 2025 under the old rules and stock bought after that date under new, friendlier rules. If you are a founder, an early employee, or an angel investor, knowing which set of rules applies to your shares can be the difference between paying nothing and paying millions. The QSBS break is one of the few permanent parts of the 2025 tax law, with no sunset date, so planning around it is worth the effort.

Here is what you will learn:

🏛️ The five core tests every share must pass to count as QSBS
⏳ How the new tiered holding periods (3, 4, and 5 years) work after OBBBA
💰 The exact dollar caps — $15 million or 10x basis — and how to do the math
🗺️ Which states refuse to follow the federal break and will still tax you
📝 How to report the exclusion on Form 8949 and Schedule D without errors

What the QSBS Exclusion Actually Is

The QSBS exclusion is a federal tax rule that lets you exclude — meaning pay zero federal tax on — part or all of the capital gain when you sell qualifying small business stock. It lives in Section 1202 of the tax code, which Congress created in 1993 to push investment into young companies. The idea is simple: if you take the risk of backing a small C corporation early and hold the shares long enough, the government rewards you by not taxing most of your profit.

The consequence of qualifying is huge. A founder who sells $15 million of qualifying gain after holding for five years can owe $0 in federal capital gains tax on that gain, instead of the roughly $3 million (at the 20% long-term rate) she would otherwise pay. That is real money that stays in her pocket.

A common misconception is that QSBS is a “loophole” only for the wealthy. In truth, early employees who exercise stock options and small angel investors qualify just as easily as founders, as long as the shares meet the tests. The break is written into the statute and is fully legal to claim.

What you should do about it is simple but early: confirm your shares qualify before you sell, ideally when you first get them. Ask the company for a QSBS attestation letter, and keep records of your purchase date and cost. Waiting until the sale is too late to fix a problem.

The Five Core Tests Every Share Must Pass

To claim the exclusion, your stock must clear five separate hurdles. Missing any one of them disqualifies the entire holding, so treat all five as non-negotiable.

Test 1 — The Company Must Be a C Corporation

The stock must be issued by a domestic C corporation, and the company must be a C corp both when it issues the stock and for substantially all of the time you hold it. S corporations, partnerships, and LLCs taxed as partnerships do not qualify. This is the most common trap for early founders.

The consequence of being an LLC or S corp is total: no QSBS exclusion at all, no matter how long you hold or how the company grows. For example, Maria founds a software startup as an LLC in 2023 to keep things simple. When she sells in 2030, none of her gain qualifies, because the entity was never a C corporation. What she should do is convert to a C corporation if QSBS matters — but the five-year clock and the asset test reset to the conversion date, so timing the switch early is critical.

Test 2 — Original Issuance to You

You must acquire the stock at original issuance — directly from the company in exchange for money, property, or services — not by buying it from another shareholder on the secondary market. Stock you buy from a departing founder or another investor generally fails this test.

The consequence is that a buyer of secondary shares loses the exclusion even if the original holder qualified. A misconception is that any startup stock qualifies; in fact, purchasing existing shares from a co-founder breaks the chain. To comply, make sure your purchase is a new issuance documented in the company’s cap table, and keep the stock purchase agreement.

Test 3 — The $75 Million Gross Asset Test

At the time the stock is issued, the corporation’s aggregate gross assets must not exceed $75 million for stock issued after July 4, 2025, measured right after the issuance. For stock issued on or before that date, the old $50 million cap applies. This ceiling is indexed for inflation starting in 2027.

The consequence of crossing the threshold is that any stock issued after the company exceeds the cap is permanently non-QSBS — even though earlier shares may still qualify. So a late-round investor in a company already worth $200 million gets nothing, while a seed investor in the same company keeps the break. The fix is to invest or get your equity grant while the company is still small, and to ask for the gross-asset figure as of your issuance date.

Test 4 — The Active Business Requirement

For substantially all of your holding period, at least 80% of the company’s assets must be used in the active conduct of a qualified trade or business. A company that becomes mostly an investment holding company, or that piles up cash far beyond its operating needs, can fail this test.

The consequence is loss of the exclusion for the period the company is non-compliant. A misconception is that a profitable, cash-rich startup is automatically fine; in reality, hoarding investments instead of operating the business can disqualify it. What you should do is monitor how the company deploys its assets and raise the issue with management if the balance sheet drifts toward passive investments.

Test 5 — The Holding Period

You must hold the stock long enough, and after OBBBA the required period depends on when you bought it. This is the test that changed most dramatically in 2025, so it gets its own full section below.

The New Tiered Holding Period (Post-OBBBA)

Before OBBBA, QSBS was all-or-nothing: you had to hold for more than five years to get any exclusion, period. For stock acquired after July 4, 2025, OBBBA replaced that with a tiered schedule that rewards partial holding. This is one of the biggest investor-friendly changes in the new law.

Under the new tiers for stock bought after July 4, 2025:

Hold at least 3 years (but under 4): exclude 50% of the gain
Hold at least 4 years (but under 5): exclude 75% of the gain
Hold 5 years or more: exclude 100% of the gain

There is an important catch on the 50% and 75% tiers. Gain excluded at the three-year or four-year tier — the part that is not excluded — is taxed at a 28% capital gains rate rather than the usual 20% long-term rate, and the included portion may also face the 3.8% net investment income tax. The consequence is that selling at the 3-year mark is not as clean as it looks; you give up both a chunk of exclusion and a higher rate on what remains.

For stock acquired on or before July 4, 2025, the old rule still controls: you must hold for more than five years to exclude anything, and the exclusion is 100% for most stock acquired after September 27, 2010. A misconception is that the new tiers apply to all current holdings; they do not. Check your acquisition date first. What you should do is mark your three-, four-, and five-year anniversaries on a calendar the day you acquire QSBS, because selling even one day early can cost you the entire tier.

The Dollar Cap — How Much Gain You Can Exclude

The exclusion is not unlimited. For each company (each “issuer”), you can exclude the greater of two amounts: a flat dollar cap, or 10 times your adjusted basis in the stock you sold that year.

For stock acquired after July 4, 2025, the flat cap is $15 million ($7.5 million if married filing separately), indexed for inflation beginning in 2027. For stock acquired on or before July 4, 2025, the old $10 million cap ($5 million if married filing separately) applies. The cap is per issuer, so gains from two different qualifying companies each get their own limit.

The consequence of the cap is that very large exits are only partly sheltered. If a founder has a $40 million gain on post-2025 stock, $15 million is excluded and the remaining $25 million is taxed normally — unless the 10x-basis rule produces a bigger number. A common misconception is that the cap is a yearly limit you can refresh; once you use up the per-issuer cap on a company, future inflation bumps do not give you more room for that same company.

What you should do if your gain will exceed the cap is plan early with “stacking” strategies — gifting shares to non-grantor trusts or family members, where each separate taxpayer gets its own cap. This is complex and needs a tax attorney, but it can multiply the exclusion many times over.

A Fully Worked Example

Let’s run the numbers for a founder selling post-OBBBA stock. Sarah founded a C corporation in August 2025, when the company had $4 million in gross assets. She received 1,000,000 shares at original issuance for $0.001 per share, giving her a total basis of $1,000.

In September 2030 — more than five years later — she sells all her shares for $16 million. Her total gain is $16,000,000 minus $1,000, or $15,999,000.

Her cap is the greater of:

The flat cap: $15,000,000
10x her adjusted basis: 10 × $1,000 = $10,000

The greater number is $15,000,000, so Sarah excludes $15,000,000 of gain. Because she held more than five years and bought after July 4, 2025, the exclusion rate is 100% on that capped amount. The remaining gain of $999,000 ($15,999,000 − $15,000,000) is taxed at normal long-term capital gains rates plus possible net investment income tax.

At a 23.8% combined rate, the tax on the leftover $999,000 is about $237,762. Without QSBS, Sarah’s full $15,999,000 gain would have been taxed — roughly $3,807,762 at 23.8%. Her QSBS savings: about $3.57 million.

Which Situation Applies to You?

The right answer depends on who you are and when you got your stock. Use this quick branch to find your path.

You are a founder who incorporated as an LLC or S corp: You likely do not qualify yet. Read the C corporation test above and talk to a CPA about converting.
You bought or were granted stock on or before July 4, 2025: Old rules apply — 5-year hold, $10 million cap, $50 million asset ceiling. Focus on the holding-period section.
You acquired stock after July 4, 2025: New rules apply — tiered 3/4/5-year exclusions, $15 million cap, $75 million asset ceiling. The tiered-holding section is for you.
You are an early employee with options: Your clock generally starts when you exercise and receive shares, not when options are granted. Confirm your exercise date.
You live in California, Pennsylvania, Alabama, or Mississippi: You may owe full state tax even if federal gain is excluded. Read the state section closely.

Scenario Tables

Founder Sells After Five Years (Post-2025 Stock)

What Happens	Tax Result
Founder holds qualifying C corp stock 5+ years, gain under $15M	100% of gain is federally tax-free
Same founder sells at exactly 3 years instead	Only 50% excluded; remaining 50% taxed at 28%

Investor Buys Secondary Shares

What Happens	Tax Result
Angel buys existing shares from a departing founder	Fails original-issuance test; no exclusion
Same angel funds a new share issuance directly	Passes the test; clock and qualification begin

Company Grows Past the Asset Cap

What Happens	Tax Result
Seed investor buys when assets are $4M	Shares qualify under the $75M ceiling
Late investor buys when assets are $200M	Those new shares are permanently non-QSBS

Three Named Examples

David, the early employee. David joins a startup in 2026 and exercises his stock options that year, when the company has $30 million in assets. He holds the shares more than five years and sells in 2031 for a $2 million gain. Because he acquired the stock after July 4, 2025, met the asset and active-business tests, and held five-plus years, his entire $2 million gain is federally tax-free.

Priya, the impatient seller. Priya bought QSBS in 2026 but needs cash and sells at exactly the three-year mark in 2029. She excludes only 50% of her gain, and the taxable half is hit with the 28% rate. Had she waited two more years, she would have excluded 100%.

Tom, the consultant founder. Tom runs a management consulting C corporation. Even though it is a C corp with under $75 million in assets, consulting is a disqualified field, so none of Tom’s gain qualifies. The business type, not the structure, sinks his claim.

Businesses That Do Not Qualify

Even a perfect C corporation fails if it operates in a disqualified field. Section 1202 excludes service businesses and certain asset-heavy industries from being a “qualified trade or business.” This is one of the most overlooked disqualifiers.

The excluded fields are:

Health, law, engineering, architecture, accounting, actuarial science, performing arts, and consulting
Athletics, financial services, and brokerage services
Any business where the principal asset is the reputation or skill of one or more employees
Banking, insurance, financing, leasing, investing, or similar businesses
Farming, including raising or harvesting trees
Mining and natural-resource extraction (anything claiming a depletion deduction)
Operating a hotel, motel, restaurant, or similar business

The consequence is total disqualification: a doctor’s professional C corporation or a hedge fund management company gets no exclusion. A common misconception is that any tech-flavored company qualifies; the IRS has issued rulings examining whether a health-tech or fintech company really sells a product or just packages professional services. What you should do if your business is borderline is get a written analysis from a tax attorney before relying on QSBS, since the line between a product company and a service company drives the whole result.

The Section 1045 Rollover Backup Plan

If you must sell before hitting your holding-period tier, Section 1045 offers a rescue. It lets you defer the gain by rolling the proceeds into new QSBS, as long as you held the original stock more than six months and reinvest within 60 days of the sale.

The replacement stock keeps the holding period of the original stock, so you only need to hold for the remainder of the required period to eventually reach a full exclusion. The consequence of using it well is that an early sale need not blow up your QSBS plan. To comply, you report the full gain on Schedule D and Form 8949, write “section 1045 rollover” below the gain line, and enter the deferred amount as a loss on the same line. Miss the 60-day window and the deferral is gone, so arrange the reinvestment in advance.

How to Report the Exclusion

You report a QSBS sale on Form 8949 and Schedule D with your Form 1040. List the sale on Form 8949 like any stock sale, then enter the excluded gain as a negative adjustment with code Q in column (f), which removes the excluded portion from taxable income.

The consequence of a reporting error is either overpaying tax (by forgetting the exclusion) or drawing an IRS notice (by claiming it without support). A misconception is that the exclusion is automatic; you must affirmatively report it. What you should do is gather your QSBS attestation letter, your purchase records, and the company’s gross-asset figure as of your issuance date before filing, and have a CPA review the 8949 entry. The filing deadline is your normal April 15 return date (with extensions available), and the records should be kept indefinitely given how far in the future a sale may occur.

Federal vs. State Treatment

Just because the IRS lets you exclude the gain does not mean your state will. Most states follow the federal rule, but a handful do not, and that can cost you a large state tax bill on gain that is federally tax-free.

Topic	Federal Rule	State Variation
Conformity	Most states follow Section 1202	California, Pennsylvania, Alabama, Mississippi tax the full gain
Partial conformity	100% exclusion possible	Hawaii and Massachusetts only partially conform
New Jersey	Excludes qualifying gain	Now conforms starting January 1, 2026

California is the harshest: it explicitly grants no QSBS exclusion, so a California resident with a 100% federal exclusion still pays California tax on the entire gain, at rates up to 13.3%. The consequence for a $10 million gain can be more than $1 million in state tax. New Jersey, by contrast, reversed course and now conforms for dispositions on or after January 1, 2026. What you should do is check your state’s conformity before you sell, and if you live in a non-conforming high-tax state, talk to a tax attorney about residency and timing planning well ahead of the sale.

Mistakes to Avoid

Forming an LLC or S corp instead of a C corp. The exclusion never applies, no matter how long you hold.
Buying secondary shares. Purchases from other shareholders fail the original-issuance test, so the gain is fully taxed.
Selling one day too early. Missing the 3-, 4-, or 5-year mark drops you to a lower tier or to zero exclusion.
Ignoring the disqualified-field list. A consulting, law, or finance C corp gets no break despite being a corporation.
Triggering a redemption. Certain company stock buybacks near your purchase date can disqualify your shares.
Assuming your state conforms. A California or Pennsylvania resident can owe full state tax on federally excluded gain.
Failing to report the exclusion. Forgetting code Q on Form 8949 means you overpay federal tax.
Missing the 60-day Section 1045 window. An early seller loses the rollover deferral entirely.

Do’s and Don’ts

Do’s:

Do confirm the company is a C corporation before investing, because only C corp stock qualifies.
Do get a QSBS attestation letter at issuance, because you will need proof years later at sale.
Do track your acquisition date precisely, because it sets your holding-period tier and which rules apply.
Do consider a Section 1045 rollover if you must sell early, because it preserves the deferral.
Do check state conformity early, because a non-conforming state can erase much of your savings.

Don’ts:

Don’t buy shares from another holder, because secondary purchases fail original issuance.
Don’t assume tech automatically qualifies, because health-tech and fintech can fall in disqualified fields.
Don’t sell at exactly three years without doing the math, because the 28% rate may outweigh the partial exclusion.
Don’t rely on QSBS for a borderline business without a legal opinion, because disqualification is total.
Don’t skip the Form 8949 code Q entry, because the exclusion is not automatic.

Pros and Cons

Pros:

Up to 100% of federal capital gains tax can be eliminated, a rare full exemption.
The break is permanent under current law, with no sunset date, so planning is reliable.
The per-issuer cap can be multiplied through gifting and trust “stacking.”
New tiered holding periods reward even a three-year hold for post-2025 stock.
The higher $75 million asset ceiling lets larger startups qualify.

Cons:

The five qualification tests are strict and easy to fail by accident.
Several high-tax states do not conform, leaving big state bills.
Service and finance businesses are flatly excluded.
The 50% and 75% tiers carry a higher 28% rate on the taxable portion.
Documentation must be kept for many years, raising compliance burden.

What to Do Next

Confirm your company is a domestic C corporation and ask for its gross-asset figure as of your issuance date.
Pin down your exact acquisition date to determine whether old or new rules apply.
Request a written QSBS attestation letter from the company and store it with your purchase records.
Mark your 3-, 4-, and 5-year anniversaries on a calendar so you never sell a day too early.
Check whether your state conforms; if not, consult a tax advisor about timing or residency.
Before any sale, have a CPA or tax attorney review your eligibility and your Form 8949 reporting — this is the point where professional help is worth the cost, especially for gains near or above the cap.

FAQs

What is the QSBS exclusion? It is a federal tax break under Section 1202 that lets you exclude 50% to 100% of capital gain from selling qualifying small business stock. For 2025, the cap is up to $15 million or 10x your basis per company.

Do I have to hold the stock for five years? It depends on when you bought it. Stock acquired after July 4, 2025 can get a 50% exclusion at 3 years and 75% at 4 years, while older stock requires more than five years for any exclusion.

How much gain can I exclude? Up to $15 million per company for stock acquired after July 4, 2025, or 10x your adjusted basis if greater. Stock acquired earlier uses the old $10 million cap.

Does an LLC qualify for QSBS? No. Only stock in a domestic C corporation qualifies. An LLC or S corporation must convert to a C corporation first, which restarts the holding-period and asset tests.

Can early employees claim QSBS? Yes. Employees who receive or exercise stock and meet the tests qualify like any shareholder. The holding period generally starts when you actually acquire the shares, not at option grant.

Which businesses are excluded? Service and certain asset-heavy fields are excluded, including health, law, accounting, consulting, financial services, banking, farming, mining, and hotels or restaurants. A C corp in these fields gets no exclusion.

What is the gross asset limit? $75 million for stock issued after July 4, 2025, measured at issuance. Stock issued on or before that date uses the older $50 million limit. Both index for inflation starting in 2027.

Does California follow the QSBS exclusion? No. California grants no QSBS exclusion, so residents pay California tax on the full gain even when 100% is excluded federally, at rates up to 13.3%.

Can I avoid tax if I sell QSBS too early? Yes, sometimes, by using a Section 1045 rollover. If you held the stock over six months and reinvest proceeds in new QSBS within 60 days, you can defer the gain.

How do I report the QSBS exclusion? On Form 8949 and Schedule D. Report the sale, then enter the excluded gain as a negative adjustment using code Q in column (f) of Form 8949, filed with your Form 1040.

Did New Jersey change its QSBS rules? Yes. New Jersey now conforms to Section 1202 for dispositions on or after January 1, 2026, after years of taxing QSBS gain in full.

Is the QSBS exclusion permanent? Yes. Unlike many 2025 tax provisions, the QSBS rules under OBBBA have no sunset date, so they apply indefinitely under current law unless Congress changes them.

This article is educational and not a substitute for advice from a licensed CPA or tax attorney about your specific situation.

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