Entrepreneurs' Relief, now known as Business Asset Disposal Relief (BADR), is a UK tax relief that allows business owners to pay a reduced Capital Gains Tax (CGT) rate of 10% when selling all or part of their business or shares in a qualifying company. The relief applies up to a lifetime limit of £1 million in gains and is available to individuals who meet specific ownership and trading criteria, including owning the business or shares for at least two years. It incentivizes entrepreneurship by reducing the tax burden on business disposals.