Section 1202 QSBS Exclusion — Qualified Small Business Stock

QSBS Overview: The Startup Exit Tax Strategy

Section 1202 of the Internal Revenue Code provides one of the most powerful tax benefits available to startup founders and early investors: the exclusion of up to 100% of capital gains on the sale of Qualified Small Business Stock (QSBS) held for more than 5 years. For stock acquired after September 27, 2010, the exclusion is 100% of the gain, subject to a per-issuer limit of the greater of $10,000,000 or 10 times the taxpayer's basis in the stock.

The practical impact is enormous. A founder who invested $100,000 in a C-Corp startup that exits for $20,000,000 can exclude $19,900,000 in capital gains from federal income tax — saving approximately $4,776,000 in federal capital gains tax at the 24% rate. The exclusion is not subject to the alternative minimum tax (AMT) for stock acquired after September 27, 2010.

QSBS planning is one of the highest-value services a tax practitioner can provide to startup founder clients. The planning must begin at the time of stock issuance — retroactive QSBS qualification is not possible. Practitioners who work with startup founders should review QSBS eligibility at every client engagement.

QSBS Eligibility Requirements

To qualify for the §1202 exclusion, the following requirements must be met at the time of stock issuance and during the holding period:

The qualifying trade or business requirement excludes: services (health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services); banking, insurance, financing, leasing, investing; farming; mining; hospitality; and any business where the principal asset is the reputation or skill of one or more employees. Software, technology, manufacturing, retail, and most other industries qualify.

QSBS Stacking Strategy

The per-issuer exclusion limit ($10M or 10x basis) applies per taxpayer per issuer. Sophisticated QSBS planning uses stacking — transferring QSBS to multiple family members (spouse, children, trusts) to multiply the exclusion limit. Each donee receives a separate $10M per-issuer exclusion limit. A founder who transfers QSBS to a spouse and two children can stack four $10M exclusions = $40M in total exclusions from a single company.

Gifts of QSBS are not taxable events (the donee takes the donor's basis and holding period). Trusts can also hold QSBS and claim the exclusion, but the trust must be a non-grantor trust to have a separate exclusion limit. Practitioners should model the stacking strategy for founder clients with significant QSBS holdings.

Section 1045 Rollover

If a taxpayer sells QSBS before the 5-year holding period is met, the gain can be deferred by rolling the proceeds into new QSBS within 60 days under §1045. The new QSBS inherits the holding period of the old QSBS for purposes of the 5-year requirement. The §1045 rollover is available only to non-corporate taxpayers (individuals, partnerships, S-Corps, and trusts).

State tax treatment of QSBS varies significantly. California does not conform to the §1202 exclusion — California taxes 100% of QSBS gains at the state level (up to 13.3% for high-income taxpayers). New York conforms to the federal exclusion. Practitioners should model the state tax impact of QSBS gains for clients in non-conforming states.

Frequently Asked Questions