CGT requirements

I'm trading crypto and stocks using the Alpaca platform (US Trading platform). The entire portfolio will be continuously reinvested so all profits are retained in the account. My understanding is: Maintain a record of all buy/sell transations including the exchange rate at point of sale (or as close to the date as possible) File a self assement tax return at the end of the tax year If the value exceeds 6k it is subject to CGT at a rate of 10% for basic and 20% for higher earners Is the above correct and are there any other considerations to be made? e.g. what is the tolerance on exchange rate used etc

Hi Michael, 
The CGT allowance for 24/25 is only £3000 and not £6000 so it will be anything above this that is liable.
There is no tolerance as such in respect of the exchange rate as you can use spot rates at any time as long as they are within the relevant tax year.
Thank you. 
 

Thanks for clarifying If I use the following sources for exchange rates: Federal Reserve and Bank of England. When trades are done on bank holidays or weekend where data is not available can the next working day be used e.g. Trades done on a Saturday use spot rate from the upcoming Monday?

[Links removed - HMRC Admin]

Hi M B,
You can use HMRC rates at HMRC currency exchange average rates.
Thank you.