RE: Capital gains tax11 Nov 2020 17:55
Hi, CB1984. No, you need to declare within four years; but once declared, the losses can be carried forward indefinitely (under present rules). I make a note at the end of my self-assessment return each year, informing HMRC that I am carrying forward a loss of £xyz, to be set against future profits; and refer them back to the relevant documents or returns in the years, when those losses were first declared .