Qualified Small Business Stock and the Discipline of Five Years

The provision

Section 1202 allows an eligible holder of qualified small business stock to exclude gain on its sale from federal income tax. Not defer. Exclude. For a founder or early employee it is routinely the single most valuable provision in the code, and it is also among the easiest to forfeit through inattention.

Two regimes, split by one date

The 2025 legislation materially expanded the provision, but only prospectively. Stock acquired after July 4, 2025 falls under a new regime. Stock acquired on or before that date keeps the old one. Both are live, and most founders now hold stock under one and may issue stock under the other.

What has to be true

The exclusion is conditional on a set of tests, several of which are determined at issuance and cannot be fixed afterwards.

• The issuer must be a domestic C corporation. An LLC or S corporation does not qualify, and converting later does not retroactively qualify stock issued before the conversion.
• The stock must be acquired at original issue, generally for cash, property, or services. Stock bought from another shareholder does not qualify.
• The corporation's aggregate gross assets must have been under the applicable ceiling immediately after issuance.
• The corporation must conduct a qualified trade or business. Several sectors are excluded outright, including most professional services, financial services, hospitality, and farming.
• The holding period must be satisfied, and it runs from acquisition.

How it gets lost

Rarely through a dramatic error. Usually through one of these.

1. 01Nobody documented the gross-asset position at issuance, so the test cannot be evidenced years later when it matters.
2. 02The company redeemed shares around the issuance date, which can disqualify stock under rules most founders have never heard of.
3. 03An acquirer offers a structure that is attractive in every respect except that it does not preserve the exclusion, and nobody raises it until the term sheet is signed.
4. 04The holder sells at four years and ten months because that is when the offer arrived.

Where this lands

1. 01Establish your acquisition date first. It determines which regime governs you and therefore every other answer.
2. 02Confirm eligibility now, not at sale. The facts that decide it were set at issuance and the evidence for them decays.
3. 03Track the holding period explicitly, with the milestones that matter under your regime marked in a calendar somebody actually looks at.
4. 04Raise section 1202 before a transaction is structured, not after. Deal structure routinely determines whether the exclusion survives, and by the time terms are agreed the question has usually been answered by accident.
5. 05If you are issuing new stock, understand that you are issuing under the newer regime and that its terms are materially better. That is worth factoring into how and when you issue.