427Charge on interest in shares ceasing to be only conditional or on disposal
(1)This section applies if—
(a)the shares cease, without the employee ceasing to have a beneficial interest in them, to be shares in which the employee’s interest is only conditional, or
(b)in a case where the shares have not so ceased, the employee sells or otherwise disposes of the employee’s interest or any other beneficial interest in the shares.
(2)The taxable amount determined under section 428 counts as employment income of the employee for the relevant tax year.
(3)The “relevant tax year” is the tax year in which the shares cease to be shares in which the employee’s interest is only conditional, or in which the sale or other disposal takes place.
(4)Subsection (2) is subject to section 494 (approved SIPs: no charge on removal of restrictions).