I see that the chancellor is eyeing the CGT allowance/tax rates. This is still speculative, but could potentially be announced on Mar 3, though even that announcement taking place is uncertain. My question is, if a CGT rise does happen, would it be effective from the date of announcement or would it be applicable from the next year (starting April 6,2021)? If it's the former it would make sense to move as many investments into the ISA wrapper as soon as possible, otherwise no action is necessary until early April.