Does Your Startup Stock Qualify for the Section 1202 Exclusion?

The short version

A valuable startup holding is not automatically tax-exempt stock. A federal exclusion may apply to qualified small business stock, or QSBS, but the result depends on the issuer, how and when you acquired the shares, the business’s activities, and your sale history. Sheepdog Tax can review those records before you build a spending or reinvestment plan around an assumed exclusion.

The 2025 law change makes dates especially important. Newer shares can reach a partial exclusion sooner, while older shares retain their own holding-period and dollar-limit rules. A company’s fundraising valuation alone does not answer the qualification question.

Start with the shares and the issuer

Internal Revenue Code section 1202(c) through (e) supplies the main qualification tests. The exclusion is for taxpayers other than corporations. Generally, the shares must be originally issued after August 10, 1993, by a qualifying domestic C corporation and acquired at original issuance for money, qualifying property, or services. Buying an existing shareholder’s stock ordinarily fails that original-issue requirement; statutory transfer exceptions need separate review.

During substantially all of your holding period, the issuer generally must remain a C corporation and meet the active-business requirements. At least 80 percent of its assets by value must be used in qualifying active business activities. Certain startup and research activities can count even before revenue begins. The statute excludes specified businesses, including many professional services, consulting, financial services, banking, investing, farming, and hotels and restaurants. A technology label does not replace an examination of what the company actually does.

The gross-assets test is a different measurement. Section 1202(d) generally counts cash plus adjusted tax bases of other assets, with a fair-market-value rule for contributed property and aggregation rules for certain controlled corporations. It is not simply the company’s market capitalization or the latest financing valuation. The ceiling applies to the relevant pre-issuance history and immediately after issuance, including the money received in that issuance.

For stock issued after July 4, 2025, the statutory ceiling increased from $50 million to $75 million, with inflation adjustments beginning after 2026. The increase does not retroactively qualify older issuances. A company that grows above the applicable ceiling after a qualifying issuance does not fail that issuance-time test merely because of later growth; continuing active-business requirements still matter. These rules and their effective dates appear in section 1202 and its 2025 amendment notes.

Match the acquisition cohort to the exclusion

Section 1202(a) and (b) separates the percentage excluded from the amount of gain eligible for that percentage. The following are the ordinary statutory cohorts; special historical empowerment-zone rules are outside this summary.

Scroll the table sideways to read all columns, including sources.

These are acquisition dates for tax purposes. They are not necessarily the dates shown on a grant announcement or brokerage transfer. Section 1223 and section 1202’s transfer rules can preserve an earlier holding period in qualifying transactions. An ordinary option grant is not an issuance of the underlying stock; section 1223(5) addresses shares acquired by exercising rights. Restricted shares and particular compensation arrangements need their own acquisition-date analysis.

For shares acquired on or before July 4, 2025, the usual dollar-limit starting point is $10 million per taxpayer per issuer. For later-acquired shares it is $15 million, indexed after 2026. The alternative is 10 times the relevant adjusted basis of the issuer’s QSBS sold during the year, determined without post-issuance basis additions. Section 1202(b) uses the greater applicable amount and coordinates prior eligible gain, mixed acquisition cohorts, and separate returns of married taxpayers. Do not add the two dollar limits together or treat them as fresh annual allowances.

The $15 million figure limits eligible gain under that dollar-limit branch. It is not a promise of $15 million excluded at the 50 percent or 75 percent tier. The nonexcluded amount requires its own tax calculation; this article does not apply a flat capital-gain rate to it.

A hypothetical partial-exclusion review

Assume an individual acquires newly issued qualifying shares for $200,000 in 2026 and sells them after the third anniversary but before the fourth anniversary in 2029 for $2.2 million. These invented figures illustrate the law currently enacted, not a forecast of future law or a client result. Assume all qualification requirements are met, no prior eligible gain from this issuer, no selling costs, no other relevant sales, and no basis changes.

The gain is $2 million: $2.2 million minus $200,000. Ten times basis is also $2 million. The gain falls below the statute’s $15 million dollar-limit starting amount, so the example does not require an assumed future inflation adjustment. At the 50 percent holding-period tier, $1 million is excluded and $1 million remains for the federal tax calculation. The $2.2 million received is neither the gain nor the excluded amount.

If the same assumed gain were realized after the fourth anniversary but before the fifth, the current 75 percent rule would exclude $1.5 million. At the five-year tier, the current 100 percent rule would exclude $2 million. That comparison holds the price and all other facts constant. It does not establish that delaying a sale is financially sensible or that a buyer will remain available.

Build the qualification file before the transaction

Sheepdog Tax’s review starts with the stock purchase or exercise documents, capitalization history, issuance dates, tax basis, and proposed sale terms. The issuer’s incorporation and tax-status records, asset calculations around issuance, activity history, and repurchase records help test the company-side requirements. Section 1202(c)(3) contains redemption restrictions, so a shareholder certificate stating that stock is QSBS should be reconciled with the underlying facts.

An employee also needs to separate compensation from later stock-sale gain. The discussion in One Stock Option, Two Sourcing Periods explains that distinction for a specific nonqualified-option and cross-border setting. Its wage-sourcing rules do not establish QSBS eligibility or extend the holding period to an option’s grant date.

The transaction-file approach in Recordkeeping for Collectors and Flippers offers a useful organizational habit: connect acquisition documents, basis adjustments, and the eventual sale. A stock file needs the additional issuer and qualification evidence described here; collectible tax classifications do not carry over to shares.

The review should produce a conclusion for each stock lot, a list of unresolved issuer facts, and a sale-year projection. State treatment requires a separate jurisdiction-specific check. The IRS Schedule D instructions describe federal reporting, but a form entry does not substitute for the qualification analysis.

How Sheepdog Tax can help

Sheepdog Tax offers a scoped review of stock-lot eligibility, holding periods, issuer evidence, exclusion limits, and the proposed sale’s tax funding. The Firm can coordinate questions with company counsel and the records custodian before a transaction deadline.

Email noah@sheepdogtax.com with the expected sale date and the kind of stock held to discuss the records needed for a secure review. Sheepdog Tax is a veteran-owned practice led by Noah Green, a certified public accountant (CPA) and Certified Fraud Examiner (CFE). This general explanation does not determine any particular holding’s eligibility or guarantee a tax outcome.

Sources

1. Internal Revenue Code section 1202, including subsections (a) through (e), transfer provisions, and 2025 amendment effective dates.
2. Internal Revenue Code section 1223, holding-period rules, including paragraphs (2), (5), and (13).
3. IRS Instructions for Schedule D (Form 1040), 2025, Exclusion of Gain on Qualified Small Business Stock and How To Report. Use the appropriate sale-year instructions when filing.

Prepared by Noah Green, CPA, CFE.