A waiver of remuneration happens when an employee gives up
rights to remuneration and gets nothing in return.
Where the employee gets a non-cash benefit in return, this is
called a salary sacrifice. For guidance on a salary sacrifice see
EIM42750 onwards.
The effect of a waiver for income tax purposes depends on its
timing.
For more details see
EIM42710.
For examples of this see
EIM42720 where salary is waived and
EIM42725 where a bonus is waived.