The Crown Dependencies of Jersey, Guernsey and the Isle of Man, and the Overseas Territories of Bermuda, Cayman Islands and British Virgin Islands, have all introduced new legislative economic substance requirements for companies and other entities with a presence in their respective jurisdictions. The legislation is effective for accounting periods commencing on or after 1 January 2019. Background In 2016, the EU Council committed to co-ordinated policy efforts in the fight against tax fraud, evasion and avoidance and adopted the ‘conclusions on criteria and process leading to the establishment of the EU list of non-cooperative jurisdictions for tax purposes’. Consequently, the EU Code of Conduct Group (Business Taxation) (COCG) were instructed by the EU Council to undertake a screening process whereby jurisdictions, including the Crown Dependencies, were assessed against three standards in respect of: • tax transparency • fair taxation, and • compliance with anti-base erosion and profit shifting (BEPS) measures In December 2017, the COCG issued a list of non-cooperative tax jurisdictions. Most countries were keen to avoid