Business Advice

Received an HMRC nudge letter? Here’s what to do next

A woman looking at the nudge letter from HMRC

That moment when you open the post and see a letter from HMRC can be nerve-wracking. Your heart skips a beat, and questions immediately flood your mind: What did I do wrong? Am I being audited? But before you panic, take a breath. You’re not alone, and more importantly, you’re not being accused of anything.

HMRC nudge letters are becoming increasingly common, and they’re not a sign of impending audits or penalties. Instead, they’re gentle prompts—encouraging you to review your tax information, spot any discrepancies, and correct them voluntarily. It’s about guidance, not punishment.

In this blog, we’ll walk you through what a nudge letter means, why you may have received one, and how to respond the right way with confidence and clarity.

What are HMRC nudge letters?

Nudge letters are one-to-many letters issued by HMRC to encourage taxpayers to check their tax records and make any necessary corrections. They serve as gentle reminders to ensure compliance.​

The purpose of these letters is to encourage self-review and correction of potential errors without initiating an audit. They are usually polite and educational in tone, aiming to foster voluntary disclosure.​

Think of it as a notice from your bank about an unusual activity—worth checking, but not always a problem. By addressing issues early, you can correct them without enforcement or penalties.

Why you might receive an HMRC nudge letter

Even if your tax return seems accurate and submitted on time, HMRC may still issue a nudge letter. Here’s why:

Errors in your tax return

Minor mistakes like misreporting income or claiming ineligible expenses can lead to discrepancies that HMRC picks up on.

Sudden increase in income

A noticeable spike in earnings may prompt HMRC to confirm everything has been reported correctly.

Incorrect expense claims

Not all expenses qualify for tax relief. Uncertainty around what’s deductible may lead to a review request.

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    Unreported or misreported income

    Income from various sources must be declared in full and accurately.

    Routine checks

    Sometimes, there’s no specific issue—just a proactive reminder from HMRC to double-check your tax affairs and disclose any oversights, if there are any, voluntarily.

    What to do if you receive a nudge letter?

    Getting a nudge letter from HMRC can feel worrying, but it’s not the same as a formal tax investigation. However, ignoring it or responding incorrectly could lead to further scrutiny or penalties—so it’s important to act carefully.

    Read the letter thoroughly

    Take time to understand what HMRC is asking. Look for any specific concerns raised, and make a note of any deadlines to respond or provide more details.

    Review your activities

    Think about the nature of your income or business. Whether you’re earning occasionally or operating more regularly, it’s important to understand how your activities impact your tax responsibilities.

    Gather relevant documents

    Collect any records that support your tax position—this could include invoices, bank statements, receipts, or previous tax returns.

    Avoid these common mistakes

    When dealing with an HMRC nudge letter, it’s easy to make missteps—especially if you’re anxious or unsure. Here are some common pitfalls to avoid:

    • Assuming it’s a scam: While fraud is a concern, not every unexpected letter is a con. Always verify authenticity by cross-checking the sender’s details with official HMRC contact information. If in doubt, call HMRC directly or consult a tax professional.
    • Responding without evidence: If you choose to respond, ensure your reply is backed by clear documentation—such as bank statements, invoices, or tax returns. A vague explanation or guesswork can raise more questions and possibly escalate the situation.
    • Missing deadlines: Through nudge letters, HMRC typically request a response within a specific time frame (often 30 days). Ignoring the letter or missing this deadline may increase the risk of HMRC taking formal action.
    • Oversharing: Stay focused on the issue mentioned in the letter. Providing unrelated or excessive information can complicate matters or even lead to scrutiny in other areas of your tax affairs.

    What happens after you respond?

    Once you’ve reviewed your records and taken appropriate action, there are several possible outcomes:

    • HMRC is satisfied: If everything checks out or if you’ve made a voluntary correction, HMRC may consider the matter closed—no further action is needed.
    • HMRC requests more details: In some cases, they may follow up with a request for supporting documents or clarification. It’s important to respond promptly and cooperatively to avoid escalation.
    • The matter escalates: While rare, significant discrepancies or failure to engage with HMRC can trigger a formal inquiry. This may involve a detailed review of your accounts and potentially penalties or legal action if wrongdoing is uncovered.

    The key is to handle the situation with accuracy and transparency.

    How can an accountant help?

    Running a business means keeping on top of your finances—and that’s where we come in. At Affinity Associates, we offer personalised tax and accounting services designed to simplify your workload and give you peace of mind.

    Keeping your records in check

    We’ll help you organise your income and expenses with a reliable system tailored to your business. Whether you’re self-employed or managing a small operation, we’ll guide you through the Self Assessment process to make sure everything’s submitted correctly and on time.

    Understanding deductions and managing missed deadlines

    Our experts will identify allowable expenses to help lower your tax bill. If you’ve missed a payment deadline, we’ll assist you in making a late payment while helping reduce penalties or interest wherever possible.

    Decoding HMRC nudge letters

    If you’ve received a letter from HMRC, don’t panic—we’ll help you understand what it means, advise on any action you need to take, and support you in reviewing or amending your tax return if required.

    Speaking to HMRC so you don’t have to

    We can deal with HMRC on your behalf, managing any communication and ensuring your case is handled with accuracy and professionalism.

    Conclusion

    Receiving an HMRC nudge letter doesn’t mean you’re in trouble—it’s a chance to get ahead of potential issues. By staying proactive, keeping accurate records, and seeking advice when needed, you can respond with confidence and stay compliant. It’s all about staying informed and taking the right steps early. Contact us if you need any support. 

    Author

    Mukund Amin
    Co-Founder & Director

    Mukund is a founding member of the Affinity Associates Group and has been with the practice for nearly 40 years. After completing his degree in Accounting and Finance, he went on to qualify with both ACCA and ICAEW in 1991. Over the years, he’s built deep expertise in consultancy, tax, business development, and corporate group structures. Mukund is known for helping clients make sense of complex financial challenges and turning them into opportunities for sustainable growth.

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