1852.This section concerns the five year rule and derives from section 140A(3) of ICTA. In the typical case the conditions apply for less than five years at which point the employee has an indefeasible interest in the shares. In those circumstances no charge as an emolument arises on acquisition but this does not affect any charges that may arise under section 135 of ICTA (where the shares are acquired by exercising an option) or section 162 of ICTA (where the shares are acquired at undervalue). In this Act those provisions are in section 476 and Chapter 8 of Part 3 respectively.