This Practice Note provides an outline of the process for obtaining authorisation from the Central Bank of Ireland as a (re)insurer. It considers the requirement for authorisation under SI No 485/2015 European Union (Insurance and Reinsurance) Regulations 2015 (Ireland) and the process for obtaining authorisation. It also considers the conditions that an applicant may be required to fulfil before the authorisation is granted, the refusal and withdrawal of an application and post authorisation amendments.