The term “qualified small business stock” (“QSBS”) refers to certain stock issued by U.S. corporations that may qualify for a special tax exception that provides for a 100% capital gain exclusion on any gain (generally up to $10 million) realized on QSBS that is held for more than 5 years. There are numerous requirements to be met by both the issuing company and the holder in order to take advantage of the tax exception.