453Charge on increase in value of shares of dependent subsidiary
(1)This section applies if the shares are shares in a company—
(a)which was a dependent subsidiary at the time of the acquisition, or
(b)which was not then a dependent subsidiary but becomes one before the employee ceases to have a beneficial interest in the shares,
and (in either case) there is a chargeable increase in the value of the shares.
(2)The taxable amount determined under section 455 counts as employment income of the employee for the relevant tax year.
(3)The “relevant tax year” is the tax year which includes the appropriate time (within the meaning of section 454(2) or (4)) by reference to which the chargeable increase is determined under that provision.
(4)Section 454 explains what are chargeable increases for the purposes of this section.
(5)This section is subject to—
section 456 (cases outside charge under this section),
section 495 (approved SIPs: no charge on increase in value of shares),
section 520 (approved SAYE option schemes: no charge in respect of post-acquisition benefits), and
section 525 (approved CSOP schemes: no charge in respect of post-acquisition benefits).