As Chair of the OECD Task Force on Tax Crimes and Other Crimes (TFTC), I am honoured to present the second edition of Fighting Tax Crime – The Ten Global Principles. The new edition includes counterstrategies for tackling professionals who enable tax and other white collar crimes, successful case studies on recovering virtual assets (such as crypto-currencies) and best practices in international co-operation in the fight against tax crimes. It further compiles country reports of 33 jurisdictions, including 27 OECD members. All of these jurisdictions are working with the shared aim of the full global implementation of the Ten Global Principles, establishing a common tax enforcement and tax investigation standard to enhance international cooperation, and build trusted relationships between the organisations responsible for tax crime investigation. These Ten Global Principles are now complemented by the Tax Crime Investigation Maturity Model, allowing jurisdictions to self-evaluate to what extent the Ten Global Principles are implemented and practised in their domestic tax investigation branch, and providing them with a clear pathway to possible further improvements.