This Practice Note sets out the self-certification, registration and filing requirements that apply to share incentive plans (SIPs). It summarises the HMRC review and approval regime that applied until 6 April 2014. It then sets out the notification requirements that have applied since 6 April 2014, and which must be met in order for a plan to qualify as a tax advantaged SIP after that date, including the practical issues involved in signing up in order to register a SIP. This Practice Note considers HMRC’s powers to enquire into whether a SIP meets the legislative requirements, the potential outcomes of such an enquiry and the different penalty regimes that can apply. Finally, it looks at the annual filing requirements for SIPs, the ability to appeal HMRC rulings and HMRC’s confirmed timetable for filing deadlines.