This Practice Note provides an introduction to the capital gains tax (CGT) regime as well as employment-related securities and securities options, and then analyses how the capital gains should be calculated, depending upon the particular share incentives structure involved. This includes a review of restricted securities, convertible securities, securities acquired for less than market value, securities disposed of for more than market value, securities with an artificially enhanced market value, post-acquisition benefits from employment-related securities, securities options (both tax advantaged and unapproved), employee-shareholder shares, joint-share ownership arrangements and growth shares. This Practice Note then examines applicable exemptions and reliefs, share pooling issues and CGT planning in the context of employee share schemes. This Practice Note is written in partnership with Karen Cooper of Cooper Cavendish LLP.