Section 1202's exclusion turns on the issuer, not the investor

The record

Section 1202 of the Internal Revenue Code lets a non-corporate taxpayer exclude some or all of the gain from selling “qualified small business stock” (QSBS). The statutory text sets the exclusion at 50 percent for QSBS acquired on or before the statute's “applicable date” and held more than five years, with a tiered schedule — 50 percent at three years, 75 percent at four, 100 percent at five or more — for stock acquired after that date, which the statute fixes as the date its current version was enacted. A per-issuer cap limits excluded gain to the greater of $10 million (pre-applicable-date stock) or $15 million (later stock, indexed for inflation after 2026), or ten times the taxpayer's basis in the disposed stock. The Form 8949 instructions confirm the reporting mechanism: a seller reports the full transaction and enters the excluded amount as a negative adjustment under code “Q.”

What the documents establish

The exclusion is conditioned on the issuing corporation, not on the taxpayer's intent to claim it. A “qualified small business” must be a domestic C corporation whose aggregate gross assets did not exceed $75 million at any point up to and including the stock's issuance, and did not exceed $75 million immediately afterward; it must also meet an active-business test and must not be primarily engaged in specified service, farming, extraction, hospitality, or similar businesses. The IRS's own Publication 550, in its 2025 edition, restates the pre-applicable-date rule for taxpayers filing now: up to 50 percent excluded on stock acquired before February 17, 2009, up to 75 percent for stock acquired through September 27, 2010, and up to 100 percent after that, subject to the same $10 million-or-ten-times-basis cap. None of this is self-certifying: eligibility depends on facts about the company's balance sheet and business activity at issuance, which a holder must be able to support if the IRS examines the claim.

The operating read

Editorially, the conditions worth checking are backward-looking and outside a single investor's control: whether the corporation's gross assets crossed $75 million before or immediately after the specific issuance relied on, and whether the business fell into an excluded category at any relevant time. A stockholder cannot retroactively fix an issuer that exceeded the asset ceiling at issuance, and a company's own description of its stock as “QSBS-eligible” is a claim, not a determination the statute or the IRS has made for that specific holder.

What to check before you decide

Before treating a gain as excludable, a holder should verify the following against the company's own records, counsel, or accountant:

• What were the corporation's aggregate gross assets immediately before and after the specific stock issuance being relied on?
• Does the acquisition date place the stock before or after the statute's applicable date, and does the holding period meet the corresponding threshold?
• Has the corporation's business, at any point during the holding period, fallen into one of the statute's excluded categories?

This describes the statute's own conditions, not a determination that any particular company's stock qualifies.