work out the Capital Gains Tax and Income Tax you owe.work out how many years you need to declare unpaid tax for.collect information about the cryptoassets you owe tax on.If you do not have a user ID, you can create one the first time you sign in.īefore you make a voluntary disclosure, you will also need to: You will need a Government Gateway user ID and password to submit a report. If you want an agent to submit a disclosure on your behalf, you will need to give them temporary authorisation to deal with your tax. If you need to declare any income or gains from the current or previous tax year, you will need to do this on your Self Assessment tax return.įind out how to make a voluntary disclosure for unpaid tax if it is not from cryptoassets.
