HMRC Phone Call Scam UK: How to Spot and Stop Tax Fraud Calls
Scammers are calling UK residents pretending to be from HMRC — here's how to tell if your call is real.
What is this scam?
The HMRC phone call scam involves criminals calling UK residents and pretending to be tax officials from HM Revenue & Customs. The caller claims you owe unpaid tax, have a refund waiting, or face legal action including arrest or prosecution. They create urgency and fear to rush you into handing over money, personal information, or bank details without checking. These scams are particularly effective because HMRC does contact people by phone legitimately — but scammers exploit this by using official-sounding language, fake reference numbers, and threats of court proceedings. They may claim to represent a specific HMRC department or reference a genuine tax issue they've researched beforehand. The goal is either immediate payment via bank transfer, gift cards, or cryptocurrency, or to steal enough personal data to commit identity fraud or access your bank account directly.
Warning signs to look for
- HMRC threats of arrest or immediate prosecution — genuine HMRC doesn't threaten you this way on a first call.
- Pressure to pay immediately or within hours via bank transfer, iTunes cards, or cryptocurrency.
- A caller asks you to confirm your National Insurance number, date of birth, or bank details — HMRC already has this and won't ask for it unsolicited.
- The number shows as 'HMRC' or a local number on your caller ID — scammers use technology to fake this.
- You don't recognise the issue they mention, or they refuse to give you time to check your own records or contact HMRC independently.
- The caller has an accent that doesn't match where they claim to be calling from, or uses unprofessional language.
- They offer to 'help you avoid tax' or suggest paying a fine in private, off the record.
- They tell you not to discuss the call with anyone, including family or your accountant.
How this scam works step by step
The scam typically begins with a cold call to your landline or mobile. The scammer opens with a plausible statement: 'This is a call from HMRC regarding unpaid tax on your account' or 'You're due a refund of £200–£500.' If you engage, they build credibility by using real HMRC terminology, asking for your National Insurance number to 'verify' you (claiming they already have it on file), and may reference a real tax year or a common issue like a Self Assessment bill. They then escalate urgency: 'If you don't pay within 24 hours, we'll issue a court summons' or 'Your refund will be cancelled.' Once you're worried, they direct you to action: transfer money to a specific bank account, buy and read out iTunes card codes, or click a link to 'settle your account online.' Some scammers use a two-stage approach, first gathering your personal data, then calling back days later claiming to be a different department needing payment. Throughout, they keep you on the call to prevent you phoning HMRC directly to verify.
How to verify if it is genuine
Never take a cold caller's word that they're from HMRC. Hang up immediately and call HMRC back on the official number: 0300 200 3300 (listed on gov.uk/contact-hmrc). Don't use any number the caller provided. A genuine HMRC adviser can confirm whether they tried to reach you and what the call was about. Check your HMRC online account directly via gov.uk/login — any real tax debt or refund will be visible there. HMRC will never ask you to confirm sensitive details like your full National Insurance number, bank details, or date of birth during an unsolicited call. If they mention a specific bill, ask them to send you a formal notice by post — HMRC always does this for genuine disputes. If you're concerned, contact Citizens Advice (0808 223 1133) or your accountant before taking any action. Trust your instinct: if the call feels pressured or threatening, it's almost certainly a scam.
What to do if you have already interacted
If you've given out your National Insurance number, date of birth, or address, contact HMRC immediately on 0300 200 3300 to report the scam and request monitoring of your account for suspicious activity. If you've transferred money, contact your bank right away — most banks can freeze or recall payments made within hours if you act quickly. Report the number to Action Fraud on 0300 123 2040 or online at actionfraud.police.uk, and forward any SMS messages to 7726 (Spam). If you've clicked a link or downloaded anything, run a malware scan using Malwarebytes or your device's built-in security tool, change all passwords (especially banking and email), and consider placing a fraud alert with Experian or Clearscore. Preserve evidence: keep the phone call record, any texts or emails, and note the exact time and caller details. Monitor your credit file and bank statements closely for the next 6 months. If money was sent via gift cards or cryptocurrency, contact the platform immediately — recovery is unlikely but disclosure to the provider can help freeze accounts and assist future victims.
Reporting this scam in the UK
Report every HMRC phone scam to Action Fraud, the UK's national fraud reporting centre, by calling 0300 123 2040 or visiting actionfraud.police.uk. Provide as much detail as possible: the number that called you, exact time, what they said, and what they asked for. If you received a suspicious text claiming to be from HMRC, forward it to 7726 immediately — this alerts your network provider and the NCSC. Report phishing links or emails claiming to be from HMRC to the NCSC Suspicious Email Reporting Service at report@phishing.gov.uk. Citizens Advice consumer helpline (0808 223 1133) can advise on your rights if money was taken. Contact HMRC directly on 0300 200 3300 to flag the scam against your account — this creates a record and helps HMRC track patterns. If you've been a victim, register with the NCSC's scam alert service to receive updates on similar fraud. Report the fraudulent number to your phone provider to help block it for others.
Frequently asked questions
Is HMRC a real organisation, or is every call from them a scam?
HMRC is entirely real — HM Revenue & Customs is the UK government's tax authority. However, criminals impersonate HMRC because it's trusted and has legitimate reasons to call people. The safest approach is to treat every unsolicited HMRC call as potentially fraudulent. Always hang up and call HMRC back on the official number 0300 200 3300 from your own phone to verify the call was genuine.
What can I do if I've already sent money to a scammer claiming to be from HMRC?
Contact your bank immediately — if the money was sent via bank transfer within the last few hours, your bank may be able to recall or freeze it. Report the scam to Action Fraud (0300 123 2040) with full details including the receiving bank account details. If you paid via gift cards or cryptocurrency, contact the provider right away, though recovery is unlikely. Report the crime to your local police and HMRC directly on 0300 200 3300. Keep all evidence and monitor your accounts closely.
The caller knew my name and a detail about my tax — how could they fake that?
Scammers often research targets beforehand using publicly available information from Companies House (if you're a director), LinkedIn, or previous data breaches. They may also use generic details that apply to millions of people, like 'unpaid Self Assessment tax' or reference a common tax year. Some obtain real personal data from hacked databases. Knowing your name and one detail doesn't make a call genuine — it's a tactic to build false trust. Always verify independently by calling HMRC directly.
How do I report an HMRC phone scam?
Report to Action Fraud on 0300 123 2040 or actionfraud.police.uk with the caller's number, time of call, and what happened. Forward any SMS to 7726. Report phishing emails or links to the NCSC at report@phishing.gov.uk. Contact HMRC on 0300 200 3300 to flag the scam on your record. Inform your phone provider and banks of the fraudulent contact. Each report helps authorities track the scammers and protect others.