Jason Collins is one of the leading tax practitioners in the UK and heads up DLA Piper’s international tax disputes team. He specialises in representing corporates and individuals who are the subject of all forms of checks into their tax affairs. He advises clients on filing positions, strategies for responding to enquiry notices, audits and information requests and on the best methods of achieving early resolution. He is experienced in all forms of alternative dispute resolution.

Where litigation is necessary Jason handles cases from assessment through to hearings at the Tax Tribunal and on appeal to the higher Courts. He has been involved in a number of landmark judgments including the first judgment of the CJEU - and the last reference to the CJEU – post-Brexit.

Jason advises both on domestic and cross-border disputes – including the application of double tax treaties. He has a particular strength in managing interventions around main purpose/principal purpose tests and “substance” interventions.

He also represents clients under criminal investigation, including representation at "dawn raids" and interviews under caution. Jason is a leading expert on the Criminal Finances Act and cross-border information exchange under the OECD’s common reporting standard and US FATCA.