Your QSBS exclusion depends on when the stock was issued

Section 1202 lets a noncorporate holder of qualified small business stock exclude gain on a sale, but the issuance date controls which rule applies. Stock issued after July 4, 2025 gets a tiered exclusion, a $15 million cap and a $75 million asset ceiling for 2026. Earlier stock keeps the older rule. Stated as of September 2026.

What is the qualified small business stock exclusion, and what makes my shares eligible?

Qualified small business stock is stock in a domestic C corporation that you acquired at original issue, for money or other property other than stock, or as compensation for services. The corporation had to be under the aggregate gross asset ceiling at issuance, and it had to run an active qualified business. Miss one element and there is no exclusion.

Original issue means the corporation issued the shares to you. Buying shares from another shareholder never qualifies. Neither does converting an S corporation to C status and keeping the same certificates, because that stock was not originally issued by a C corporation. Shares issued after a conversion, or on incorporating an LLC, stand on their own date.

Law: 26 U.S.C. 1202(c)(1); 26 U.S.C. 1202(i)(1).

Two more requirements run the length of your ownership. The corporation must be a C corporation during substantially all of your holding period, and must meet the active business requirements during substantially all of it. Section 1202 is not a snapshot taken at closing. It is a continuous condition, tested backward from the sale.

The asset ceiling is not a single measurement either. Aggregate gross assets, counted as cash plus the adjusted bases of property, must stay under the ceiling at all times before the issuance and immediately after it, counting what the corporation took in on that issuance.

Law: 26 U.S.C. 1202(c)(2)(A); 26 U.S.C. 1202(d)(1).

Does the July 4, 2025 issuance date change what I can exclude?

The One Big Beautiful Bill Act, signed July 4, 2025, created two parallel Section 1202 regimes split by issuance date. Stock acquired after July 4, 2025 gets a tiered exclusion, a larger per-issuer cap and a higher corporate asset ceiling. Stock acquired on or before that date stays on the older, stricter rule.

The figures below are the enacted amounts as they apply for 2026, stated as of September 2026.

Law: 26 U.S.C. 1202(a), (b)(1), (b)(4), (d)(1); One Big Beautiful Bill Act, Pub. L. 119-21 (July 4, 2025).

The part of a gain left unexcluded by the three-year and four-year tiers is not taxed at the usual long-term capital gain rate. It is section 1202 gain, subject to a maximum 28 percent rate, and the net investment income tax can apply on top.

Law: 26 U.S.C. 1(h)(4); 26 U.S.C. 1411.

The consequence is arithmetic, not philosophy. A founder block issued in 2019 and a block issued in August 2025 to an investor or a key employee sit in different regimes inside one cap table, each with its own holding period, cap and ceiling. The cap runs per issuer and is reduced by gain you already excluded from that issuer.

Law: 26 U.S.C. 1202(b)(1)(A).

One company, one closing, two tax answers. The certificate date decides which one is yours.

Why do most service businesses fail the Section 1202 active business test?

Section 1202 requires that at least 80 percent of the corporation’s assets, by value, be used in the active conduct of one or more qualified trades or businesses. A qualified trade or business is defined by exclusion. The statute lists whole industries that can never qualify, and those exclusions knock out a large share of privately held companies.

The excluded list is specific:

• Services in health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services or brokerage services.
• Any business whose principal asset is the reputation or skill of one or more employees.
• Banking, insurance, financing, leasing, investing or similar businesses.
• Any farming business, including raising or harvesting trees.
• Extraction businesses eligible for a depletion deduction.
• Operating a hotel, motel, restaurant or similar business.

Law: 26 U.S.C. 1202(e)(1); 26 U.S.C. 1202(e)(3).

Apply that to a real company. A twelve-person engineering firm organized as a C corporation in 2018, funded with original-issue stock, under every asset ceiling, still fails. Engineering is on the list. Do not build a price expectation around it.

Borderline cases are real. Software sold to hospitals is not obviously the field of health, and it gets resolved on facts, before you sign.

Also test asset composition, not just industry label. Cash counts as active only to the extent it is reasonably required working capital, or is expected to fund research or working capital increases within two years. After two years of existence, no more than half the corporation’s assets can qualify that way.

Law: 26 U.S.C. 1202(e)(6).

What happens to my exclusion if the buyer insists on an asset sale?

Section 1202 excludes gain from the sale or exchange of qualified small business stock. It does nothing for a sale of assets. If the buyer purchases the corporation’s assets instead of your shares, the corporation recognizes the gain and pays corporate tax first, and only what survives that tax reaches you. The exclusion, at best, shelters the second layer.

Buyers want assets for reasons unrelated to you. An asset purchase gives a stepped-up basis and fresh depreciation, and leaves behind liabilities the buyer does not assume, subject to successor liability doctrines that vary by state.

One structure salvages part of the benefit. If the corporation sells its assets and then completely liquidates, the liquidating distribution is treated as full payment in exchange for your stock, so shareholder-level gain can still be eligible for the exclusion. The corporate tax is paid first. Run both numbers before conceding structure.

Law: 26 U.S.C. 1202(a); 26 U.S.C. 331(a).

Set expectations honestly. For a privately held company of this size, an asset purchase is the ordinary default, not an aggressive buyer position. A stock purchase is something you trade for, and that trade is cheapest before the buyer models the step-up.

Two elections are worth knowing by name. A Section 338(h)(10) election treats a qualifying stock purchase as a deemed asset sale, and is available only where the target is an S corporation or a member of a selling consolidated or affiliated group. A Section 336(e) election requires a domestic corporate seller or S corporation shareholders.

Law: 26 U.S.C. 338(h)(10); 26 CFR 1.338(h)(10)-1(c); 26 U.S.C. 336(e); 26 CFR 1.336-1(b)(6).

A freestanding C corporation owned by individuals is not an eligible target for either election, and an S corporation never had the exclusion to lose. The real threat is a letter of intent that says “purchase of substantially all assets” on page one.

So the structure fight belongs in the letter of intent. Once a buyer has priced an asset deal, converting to a stock purchase is a negotiation you start from behind. If your shares qualify, put that number on the table while structure is open.

The exclusion is a stock benefit. Sell assets and you have sold the wrong thing.

Can a stock redemption destroy the exclusion for everyone in the company?

A stock redemption can disqualify an entire issuance. Section 1202(c)(3) disqualifies stock when the issuing corporation bought back its own shares within defined windows around the issuance. One rule targets redemptions from you or a related person within a four-year period beginning two years before your stock was issued. The other targets significant redemptions from anyone.

The significant redemption rule is the one that reaches an entire issuance. If, during the two-year period beginning one year before the stock was issued, the corporation purchased its own stock with an aggregate value exceeding 5 percent of the value of all its stock at the start of that period, stock issued in that window is not qualified small business stock.

Law: 26 U.S.C. 1202(c)(3)(A), (c)(3)(B); 26 CFR 1.1202-2.

The regulation narrows both tests, and the exceptions decide as many cases as the tests do. A purchase is de minimis, and disregarded, only if the aggregate paid is $10,000 or less and the shares stay under a 2 percent threshold. Other exceptions disregard purchases on a bona fide termination of service as an employee or director, on death, on disability, and incident to divorce.

So date every buyback, then ask which rule it lands in. Buying out a minority holder who paid cash counts. Retiring shares an employee received for services, after that employee genuinely left, may be disregarded. Read the exception before you assume either answer.

The failure mode is quiet. It surfaces in diligence, not in the year of the buyback.

What if I have not held the stock for the full holding period yet?

Section 1045 allows a noncorporate holder who has held qualified small business stock for more than six months to elect to roll gain into replacement qualified small business stock purchased within the 60-day period beginning on the date of sale. Gain is recognized only to the extent the amount realized exceeds the cost of the replacement stock.

Law: 26 U.S.C. 1045(a), (b)(1); 26 U.S.C. 1223(13).

Understand what the rollover does. It defers gain, and the holding period of the stock you sold carries over to the replacement for the five-year test. It does not create an exclusion by itself, and it takes an election on a timely filed return plus an actual purchase of qualifying stock inside 60 days.

Under the post-July 4, 2025 regime, timing has more texture. A sale at three years and eleven months excludes 50 percent. One month later it excludes 75 percent. If the buyer’s timeline is flexible, the calendar is worth money. If it is fixed, price the cost of closing early.

Will my state tax the gain even if the federal exclusion applies?

Some states do not follow Section 1202 at all, so a gain excluded federally can be fully taxable at home. California repealed its own exclusion and deferral provisions and allows no exclusion for tax years beginning on or after January 1, 2013. Pennsylvania, Alabama and Mississippi provide no exclusion either.

Authority: former California Revenue and Taxation Code sections 18152.5 and 18038.5, amended and repealed by Assembly Bill 1412 (2013); Cutler v. Franchise Tax Board, 208 Cal. App. 4th 1247 (2012); FTB Notice 2012-03.

Conformity moves. New Jersey conformity applies to tax years beginning on or after January 1, 2026, and Oregon requires an addback for the same years. States tied to the Internal Revenue Code as of a fixed date may not follow the 2025 amendments yet. Confirm your state as of your closing date.

Residency matters too, and it is not a last-minute lever. Where you live when the gain is recognized can change the answer, and a nonconforming state may still tax income sourced to it.

What should I pull from my files before I sign a letter of intent?

Six documents decide whether Section 1202 is available: the stock certificates, the stock ledger, the subscription or purchase agreements, the board consents authorizing each issuance, the corporation’s balance sheets around each issuance date, and every record of the corporation buying back its own shares. Gather them before structure is negotiated, not during diligence.

I ask for the stock ledger and the subscription documents before I read the letter of intent, because the issuance dates decide which regime applies and nothing in the letter of intent can change them.

Work the list in this order:

• Date every block you own. Note the consideration paid and whether the shares came from the corporation or from another holder.
• Sort the blocks against July 4, 2025, and older blocks against September 27, 2010. Each date carries its own percentage and caps.
• Confirm C corporation status for the whole holding period of each block, including any period as an S corporation or an LLC.
• Reconstruct aggregate gross assets before and immediately after each issuance, against the ceiling that applied then.
• Test the active business question against the excluded list, and check the asset mix for idle cash.
• List every redemption with its date, and test each against both windows and the regulatory exceptions.
• Price the state tax for where you will be a resident at closing.
• Then, and only then, take a position on structure in the letter of intent.

If that work shows a qualifying stock sale, the letter of intent should say stock purchase, and the tax treatment should be a stated assumption rather than an implication. If it shows the exclusion is unavailable, stop trading price for a benefit you were never going to get.