Updated for the One Big Beautiful Bill Act. Stock acquired after July 4, 2025 is subject to a new tiered holding period.
See what changed →
QSBSGo
TAX ATTORNEY's guide to qualified small business stock

Everything you need to understand QSBS.

Section 1202 fundamentals, in plain English. Guides, tools, and a learning lab covering QSBS from formation through exit.

The QSBS Learning Lab

QSBS has five stages, and each one can cost you the exclusion

Most people meet §1202 at the exit, when it is far too late to fix anything. The conditions have to hold from the day the stock is issued. The Learning Lab follows that order.

Start here

QSBS fundamentals

Four questions, in order. Answer them and you know whether §1202 is even on the table.

What changed · July 2025

The One Big Beautiful Bill Act rewrote §1202.

For stock acquired after July 4, 2025, the five-year cliff is gone and the dollar thresholds moved. Stock acquired on or before that date stays under the old rules. Most cap tables now hold both, and each block has to be analyzed on its own terms.

Read the breakdown →
HOLDING PERIOD
Tiered: 50% exclusion at three years, 75% at four, 100% at five
PER-ISSUER CAP
Raised from $10M to $15M, indexed for inflation beginning 2027
GROSS ASSETS
Corporate ceiling raised from $50M to $75M, also indexed
EFFECTIVE DATE
Applies to stock acquired after July 4, 2025 only

The 50% and 75% tiers exclude only part of the gain; the rest is taxed under the pre-existing rules. Selling at three years is not a free option. It changes the math.