Overlap relief is given as a deduction in calculating the profits of the trade for:
A deduction for overlap relief only reduces the assessable
profit for the year in which the relief is given. There are no
circumstances in which the figure of ‘net profit’ for a
year (that is the profit after deduction of overlap relief) should
be used in any apportionment to calculate the profits of an
adjacent year.
Overlap relief is a mandatory deduction. The full amount of
the relief available for a particular tax year must be given as a
deduction for that tax year. No part of the deduction can be
waived.
If giving overlap relief creates or enhances a loss, that
loss is available for loss relief in the normal way.