For more general information regarding share incentive plans (SIPs), see Practice Note: What is a SIP? For more general information on save as you earn (SAYE) schemes, see Practice Note: How SAYE schemes work and key features. Legislation governing SIPs and SAYEs—registration and filing requirements The legislative requirements for SIPs and SAYE schemes are each set out under a separate schedule to the Income Tax (Earnings and Pensions) Act 2003 (ITEPA 2003), with ITEPA 2003, Sch 2 applying to SIPs and ITEPA 2003, Sch 3 applying to SAYE schemes. In this Practice Note, these are referred to below as ‘Schedule 2’ or ‘Schedule 3’, as applicable—or to ‘the applicable schedule of ITEPA 2003’. The legislation governing the registration and filing requirements for SIPs and SAYE schemes is as follows: • for SIPs, it is contained in ITEPA 2003, Sch 2 Pt 10, paras 81A–81K, and • for SAYE schemes, it is contained in ITEPA 2003, Sch 3 Pt 8, paras 40A–45 The HMRC registration process In