For an overview of waivers of remuneration see
EIM42705.
A waiver can be of fees and bonuses as well as salary.
The crucial factor for tax purposes is whether the
remuneration waived is given up before it is treated as received
for employment income purposes. Once a director or employee is
treated as having received money earnings (see
EIM42260 onwards):
A subsequent waiver of remuneration will neither reduce the
amount of remuneration subject to PAYE nor the amount of taxable
earnings. For more detail on this point see
EIM42715.
The link established by Finance Act 1989 between the time
when employers can obtain a deduction for earnings in computing
their business profits and the deduction of PAYE from them, should
result in companies not voting remuneration that they are unable to
pay.