Section 1047 | Elections under section 1045
From legislation.gov.uk
(1)An election under section 1045 must specify the accounting period in respect of which it is made.
(2)The election must be made by notice in writing to an officer of Revenue and Customs.
(3)The notice must be given before the end of the period of two years beginning immediately after the end of the accounting period to which the election relates.