HMRC Scam Letter – How to Spot a Fake Letter
Few things make your heart sink faster than a brown envelope stamped “HMRC”, and with HMRC scam letters on the rise it’s natural to worry whether a letter is genuine or fake. This guide explains exactly how to spot a fake HMRC letter, what a genuine HMRC letter should look like, and the steps you can take to safely check any HMRC letter you receive so you don’t fall victim to scams or miss out on money you’re owed.
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Why open HMRC letters (and what to look for first)
HMRC letters can be stressful, but ignoring them can mean penalties or even missing refunds — HMRC recently highlighted that almost 1 million people didn’t claim money they were owed after receiving refund letters and not acting on them. Open them promptly, then do three quick checks:
- Is it clearly addressed to you, with your full name, address and an HMRC reference?
- Does it clearly state what it’s about (tax code, refund, self‑assessment, NI, corporation tax) and give a reasonable deadline?
- Do the contact details match those on GOV.UK, not just what’s printed in the letter?
If anything looks rushed, threatening or asks for unusual payments or bank details, treat it with caution and use the checks in the next section before responding.
Once you’ve opened the letter, use the checks below to spot the signs of a fake HMRC letter.
How to know a letter from HMRC is genuine
Before you panic or pay anything, check whether the HMRC letter is real. Use these quick checks to confirm if it’s genuine.
1. Check the sender details
- Look for “HM Revenue & Customs” and a UK office address on the letterhead.
- Compare the phone number, web address and postal address with the official details on GOV.UK (search “HMRC contact” and cross‑check).
- Be cautious if the letter uses non‑UK phone numbers, personal email domains (Gmail, Outlook, Yahoo) or strange web links.
2. Look for your personal information
- Genuine HMRC letters usually include:
- Your full name (not just “Dear Customer” or “Dear Sir/Madam”).
- Your correct address.
- A tax reference, UTR, National Insurance number or similar reference.
- If it feels generic and doesn’t clearly relate to your situation, treat it with suspicion.
3. Check the content and tone
- Real HMRC letters:
- Explain clearly why they are writing (tax code change, refund, underpayment, self‑assessment, NI, corporation tax, etc.).
- Use professional language with proper spelling and grammar.
- Give a reasonable timeframe to respond and often explain your rights to question or appeal.
- Be wary of letters that rely on heavy threats (“we will arrest you today”) or pressure you to act immediately without explanation.
4. Look at how they ask you to pay or reply
- HMRC will not:
- Ask for passwords, full bank details, PINs or security codes.
- Demand payment via gift cards, vouchers, cryptocurrency, or to a personal bank account.
- Genuine letters point you to standard HMRC payment options via GOV.UK and may mention how to set up a payment plan if you cannot pay in full.
5. Cross-check with your HMRC online account
- Log into your Personal Tax Account or Business Tax Account on GOV.UK and check whether the letter matches what you see online (for example, tax due or a refund showing).
- If the figures or message don’t match, call HMRC using a number from GOV.UK, not just the one printed on the letter.
If anything looks off — the tone, the payment request, or the contact details — stop and verify it with HMRC or a trusted tax adviser before you respond or send any money.
How to spot a fake letter?
Sadly, fraudsters increasingly target people by post, as well as through email, phone calls, and text messages. Spotting a fake letter is key to protecting yourself. Here’s what to watch for:
1. Scare tactics and urgency
Scammers often try to create panic. A letter that tells you to act “immediately” or demands instant payment is a warning sign. HMRC rarely asks for payment at short notice without giving you a chance to contact them and discuss the issue.
2. Inconsistent contact details
Fake letters may contain HMRC logos and official-sounding language, but the addresses or contact numbers might not match official HMRC information. Always verify addresses and phone numbers on the GOV.UK website before responding.
3. Requests for sensitive information
If the letter asks for bank details, passwords, or tells you to open a new account, treat it with suspicion. Genuine HMRC letters don’t request such details in first contact because they already have your information.
4️. Generic greetings
Fake letters often start with “Dear Sir/Madam” instead of using your name. Real HMRC letters are addressed to you personally.
5️. Poor design
Look out for unclear logos, strange fonts, or bad grammar. These are all clues that a letter may not be genuine.
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What types of genuine HMRC letters might you receive?
It’s worth remembering that not all HMRC letters bring bad news. Here are some common types of letters and what they mean:
✅ Tax code notices
Around January, HMRC will send a letter about your tax code for the coming tax year. This shows how much you can earn before paying tax and what income sources they know about. Check this carefully, especially if you have more than one job or pension. Mistakes can lead to paying too much or too little tax.
✅ Annual tax summary
At the end of the tax year, HMRC will send you a summary of your income and tax. Compare this with your P60 or pension statements to ensure everything matches.
✅ Refund letters
If you’ve overpaid tax — for example, because of an emergency tax code or changes in your income — you may get a letter (such as a P800) telling you about a refund. These are genuine and worth looking out for!
❗ Requests for self-assessment
If HMRC writes to ask for a tax return, even if you don’t think it applies, don’t ignore it. You must respond or risk fines. Often, HMRC believes you have extra income, and it’s important to clarify your position.
❗ Letters about underpaid tax
If you get a letter saying you owe tax, first check that it’s genuine and that the details are correct. Contact HMRC quickly — they can often agree a payment plan if you need one.
I think this is a scam — what should I do next?
If you think you’ve received an HMRC letter scam:
- Do not use the contact details in the letter.
Visit the HMRC contact page to find the right number or address. - Report it.
HMRC encourages people to report suspected scams to phishing@hmrc.gov.uk or via their website.
Don’t give out personal information.
Never share bank details or personal data unless you’re sure you’re dealing with the real HMRC.
When should I get expert help?
If you’re unsure how to handle a letter, you can:
- Call HMRC directly (using official contact details).
- Set up a personal tax account online to view and manage your tax information.
- Speak to a tax adviser or accountant.
- Contact charities like the Low Incomes Tax Reform Group, who help people understand and deal with tax issues.
Final thoughts
HMRC letters don’t have to be scary. The key is to open them, read them carefully, and take the right action. Whether the letter brings good news, bad news, or just a reminder, dealing with it promptly will help you avoid bigger problems — and spot scams before they cause harm.
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