Should I do tax return self assessment or via "Disclosing unpaid tax on cryptoassets"?
I called HMRC multiple times, but different staff always told me different stories.
Today I finally got my UTR and I was told if I do self assessment tax return, there are 3 different forms I need to fill in, including one for income although I'm on PAYE.
I have a few tax years I need to get back for my crypto capital gain/loss, which one would you recommend? Through tax return self assessment or Disclosing unpaid tax on cryptoassets?
Also I need to calculate my own penalty and interest? And if it's not correct I also get another fine and interest on top of it?
Have you got contacted by HMRC for more details after the disclosure or tax return if you were a few years behind?
FYI, I have thousands of transactions, I feel the crypto tax rule is very difficult to follow.