Check if you need to pay tax when you sell cryptoassets.

You may need to pay Capital Gains Tax if you make a gain when disposing of cryptoassets, such as by selling, exchanging, or using them to pay for goods and services. If your total gains for the tax year exceed the tax-free allowance, you must report the gain and pay the tax due. You are required to maintain detailed records of all transactions and use specific pooling rules to calculate your gains.