Self Employed full 52 - Overlap Profit brought forward
When basis periods overlap, for example in the first 2 years of business or following a change in accounting date, you should keep a record of both the overlap profit and the overlap period. The overlap profit is carried forward each year until you are able to claim overlap relief.
Overlap profit carried forward
The amount to enter here will be the overlap profit carried forward from previous years, plus any new overlap profits this year minus any entry in the 'Overlap relief used for the year 2020 to 2021.