HMRC Nudge Letters: One to Many Campaigns Explained

HMRC's One to Many approach sends the same or similar letter to a large group of taxpayers who share a data-driven risk indicator, rather than opening individual formal enquiries into each of them. The letters are cheaper for HMRC to issue at scale and rely on the recipient reviewing their own position and correcting it voluntarily where needed.

Because a nudge letter is not a Schedule 36 notice or a section 9A enquiry, it does not by itself carry a statutory response deadline or formal information powers. That does not make it safe to ignore: HMRC selected you because its data already suggests a discrepancy, and a later formal check on the same point starts from a position where you have had notice of the issue.

A common campaign compares company accounts and Persons of Significant Control records against the personal Self Assessment returns of directors and shareholders. Where dividends recorded in company accounts do not appear, or appear understated, on a director's personal return, HMRC writes to ask the recipient to check their figures.

These letters often overlap with wider concerns about illegal dividends voted without sufficient distributable reserves, which can be recharacterised as loans or earnings with different tax consequences. Reviewing board minutes, dividend vouchers and the company's distributable reserves position alongside the personal return is the right starting point before replying.

HMRC compares Gift Aid claims made by charities against the tax actually paid by the donor for the relevant year. Higher rate and additional rate taxpayers who claim Gift Aid relief, or who have declared Gift Aid donations without having paid enough tax to cover them, are a frequent target of this campaign.

Where a donor has not paid enough Income Tax or Capital Gains Tax to cover the tax reclaimed by the charity on their donations, the shortfall is generally payable by the donor, not the charity. Checking P60s, dividend tax paid, and any tax-free allowances used against the total Gift Aid claimed for the year clarifies whether a correction is needed.

The Common Reporting Standard means HMRC automatically receives account information from overseas financial institutions in dozens of participating jurisdictions, including balances and, in some cases, income. Letters referencing overseas accounts or the requirement to correct typically follow a mismatch between this data and a UK tax return.

Offshore matters carry their own, often longer, assessment time limits and higher penalty ranges than purely domestic errors, so these letters should not be treated the same as a routine domestic nudge. Where undeclared offshore income or gains are confirmed, the Worldwide Disclosure Facility is usually the correct route to put things right.

There is rarely a legal obligation to reply to a nudge letter that contains no formal notice, but a considered response, or a proactive correction, is usually the safer course than silence. Silence does not make the underlying data disappear, and HMRC may follow up with a formal enquiry if nothing changes.

Where the review confirms the return is correct, some taxpayers choose to reply briefly explaining why, while others simply retain their evidence. Where an error is found, the reply should be replaced by action: amending the return or beginning the appropriate disclosure process, rather than a letter promising to look into it.

Ignoring a nudge letter does not carry an automatic penalty in the way that ignoring a Schedule 36 notice does, because no formal notice was issued. The practical risk is different: HMRC may escalate to a formal compliance check or enquiry, and any subsequent correction is then treated as prompted rather than unprompted for penalty purposes.

The gap between a prompted and unprompted disclosure can be significant within the statutory penalty ranges for careless or deliberate behaviour, so the financial cost of waiting can outweigh the inconvenience of reviewing the letter promptly.

Some nudge letters, particularly offshore campaigns, enclose a certificate of tax position asking you to confirm your UK tax affairs are up to date, or to tick a box saying you will make a disclosure. Signing this document without first checking the facts can create a false statement with its own consequences, separate from the original tax point.

If you are unsure whether your affairs are fully correct, it is generally safer to complete the underlying review first, correct anything found, and only then respond to the certificate, rather than signing a confirmation you cannot yet stand behind.