This Linklater’s initiative deals with the 2019 US DoJ new guidance on what it will look for when evaluating corporate compliance programmes. The key principles highlighted by the DOJ are to: (i) ensure the programme is well designed; (ii) assess whether the programme is being implemented effectively; and (iii) ask whether the programme works in practice. This is largely in line with best practices developed in other jurisdictions. The authors have condensed the most important and common elements of guidance provided by competition authorities globally to comprise a list of top tips for building effective compliance.