A lot of people discover, often years in, that gains they made on crypto should have been declared and were not. It is one of the most common situations we see, and it is almost always fixable. The mechanism is a voluntary disclosure.
What a voluntary disclosure is
A voluntary disclosure is you telling HMRC, before they come to you, that earlier years were not right, and putting them right. For crypto, this is normally done through HMRC's Digital Disclosure Service (DDS). You calculate what should have been declared, work out the tax and any interest and penalties, and submit it.
Why the penalty position matters so much
Penalties in the UK are driven largely by behaviour and by whether the disclosure was prompted or unprompted. Where an error was careless rather than deliberate, and where you come forward voluntarily, the penalty range is usually far lower than the worst-case figures people frighten themselves with online. The number of past years HMRC can go back over also depends on that behaviour.
This is why the order of events matters. A disclosure you make on your own initiative sits at the favourable end of the scale. Waiting until a nudge letter or an enquiry forces your hand moves you toward the harsher end.
How the process runs
- Reconstruct the history. Every relevant disposal across every exchange and wallet is reconciled into clean figures.
- Calculate the position. Tax, interest, and the appropriate penalty range for the years involved.
- Notify and disclose. HMRC is formally notified, then the disclosure itself is prepared and submitted.
- Settle. The agreed amount is paid, and your affairs are back in order.
What it feels like in practice
Most people arrive at this anxious, and leave relieved. The uncertainty is usually worse than the outcome. Once the real numbers exist and there is a clear plan to settle them, a problem that felt open-ended becomes a defined, closeable task. We handle the calculations, the wording, and the correspondence, so you are not trying to word a disclosure to HMRC yourself.
This article is general information, not tax advice, and the rules can change. Please get in touch for advice on your own circumstances.