With the inclusion rate settled at 50% and the Canadian Entrepreneurs' Incentive cancelled, the $1.25M Lifetime Capital Gains Exemption on QSBC shares is the largest single tax lever available to a Canadian business owner. It is also conditional: the company must meet active-business asset tests, and a company carrying too much passive investment or redundant cash fails them. Purification takes time, which means the answer matters years before a sale, not months.