ITEPA03/S41B(2) says that where there is an amount which counts as employment income by virtue of Chapter 2 (restricted securities) or Chapter 3 (convertible securities), the relevant period -
See
ERSM30390 for guidance on what
constitutes a chargeable event for the purposes of Chapter 2; and
ERSM40060 on what constitutes a
chargeable event for the purposes of Chapter 3.
See
ERSM160725 and
ERSM160730 for examples of how the
relevant period rules work for Chapter 2 and Chapter 3
respectively.