Making a Voluntary Disclosure to HMRC

A recent error may sometimes be corrected by amending the relevant return within its amendment window. HMRC also operates campaigns for particular risks, including the Let Property Campaign for eligible landlords. The Digital Disclosure Service can be used for certain Income Tax, Capital Gains Tax, National Insurance and Corporation Tax liabilities, but it is not a universal route for every tax or every circumstance.

VAT errors have their own correction and notification rules. PAYE, offshore matters, deliberate conduct and cases where HMRC has already opened a check may require a different approach. Confirm eligibility before notifying: the route affects deadlines, forms, payment and how the disclosure is assessed.

The years in scope depend on the tax, statutory assessment time limits and behaviour. Four, six and twenty-year periods are often discussed, but they are not interchangeable rules for every case. Failures to notify, offshore matters and deliberate inaccuracies can involve different provisions. Start from the transaction history and apply the rules to each period.

A disclosure usually needs period-by-period tax, late-payment interest and a reasoned penalty proposal. Deductions and reliefs must be supported, not estimated optimistically. Where records are missing, use a reasonable reconstruction, preserve the working papers and explain the method and limitations.

A disclosure is not automatically unprompted merely because you contact HMRC first. The test considers whether you had reason to believe HMRC had discovered, or was about to discover, the inaccuracy or failure. A campaign letter, information request or existing enquiry may change the position.

Whether disclosure is prompted can affect the statutory penalty range. The quality of disclosure also matters: telling, helping, giving access to records and doing so early can reduce a penalty within the applicable range. These points should be supported by the chronology rather than asserted without evidence.