Which SA108 boxes do I use for crypto in the UK?
From 2024/25 returns, use the Cryptoassets section on SA108: box 13.2 for disposal proceeds, 13.3 for allowable costs, 13.4 for gains, 13.5 for losses. Report crypto income separately on SA100, not in these boxes.
Not financial advice. General information only. Verify current rules on gov.uk and HMRC.