Few scam calls are as alarming as one claiming to be from HMRC. The scripts range from a tempting "tax refund" to a terrifying "warrant for your arrest", and they're deliberately designed to override your judgement with greed or fear. The good news: once you know how the real HMRC operates, these calls fall apart instantly. This guide explains the common versions and the simple checks that expose them.

The common HMRC scam scripts

Fraudsters run several versions, often as a recorded message:

  • The arrest threat. A robotic or aggressive voice claims there's a lawsuit, a warrant, or "enforcement action" against you for unpaid tax, and you must press 1 or pay immediately to avoid arrest.
  • The tax refund lure. A friendlier version says you're owed a refund and just need to "confirm your bank details" to receive it.
  • The unpaid tax demand. You owe money urgently and must pay now - often via bank transfer, or bizarrely via vouchers or gift cards.
  • The National Insurance angle. Closely linked, claiming your National Insurance number has been used in fraud.

A realistic example:

An automated call states: "This is HMRC. A warrant has been issued in your name for tax fraud. To avoid immediate arrest, press 1 to speak to your case officer." Press 1 and an "officer" pressures you to pay a "settlement" at once, perhaps in gift card codes. It is entirely fake - HMRC does not issue arrest warrants by phone, and no real authority is paid in gift cards.

What HMRC will never do

This is your checklist. The genuine HMRC will never:

  • Threaten you with immediate arrest or send the police to your door over the phone.
  • Ask you to pay using gift cards, vouchers, or by transferring money to a "safe account".
  • Demand immediate payment under threat during an unexpected call.
  • Phone you out of the blue to offer a refund in exchange for your bank or card details.
  • Ask for personal or financial information by text or leave threatening voicemails.

If a call does any of these things, it's a scam - no exceptions.

Red flags to listen for

  • Urgency and threats - "act now or face arrest/legal action".
  • Unusual payment methods - gift cards, vouchers, cryptocurrency, bank transfer to a new account.
  • Requests for security details - your full bank details, passwords or one-time codes.
  • A recorded voice demanding you press a button.
  • A pressure not to hang up or "discuss it with anyone".

Remember the number can be spoofed to look official.

What to do

  1. Hang up. Don't press buttons, don't engage, don't be rushed.
  2. Verify independently. If you're genuinely unsure about your tax, contact HMRC using the official contact details on GOV.UK - never a number the caller gave you.
  3. Don't pay or share details on the call.
  4. Report it. HMRC asks the public to report suspicious tax-related calls, texts and emails so they can be investigated. Forward scam texts to 7726, and report fraud to Action Fraud on 0300 123 2040 (Police Scotland on 101).
  5. If you paid or shared bank details, contact your bank straight away - see what to do if you've been scammed.

The bottom line

The HMRC phone scam runs on emotion - the fear of arrest or the lure of a refund. Strip the emotion away and the checklist is decisive: HMRC never threatens immediate arrest by phone, never wants gift cards, and never cold-calls for your bank details to "release a refund". Hang up, verify through GOV.UK, and report it. Knowing what the real HMRC won't do is all the protection you need.

Frequently asked questions

Does HMRC call about arrest warrants or lawsuits?

No. HMRC does not issue arrest warrants or threaten immediate legal action through phone calls or recorded messages. Any call claiming there's a warrant against your National Insurance number or for "tax fraud" and demanding immediate payment is a scam - hang up.

How do I know if an HMRC call is genuine?

Check it against what HMRC will never do: threaten arrest, demand gift cards or transfers to a "safe account", or cold-call for your bank details. If anything matches that list, it's a scam. When unsure, hang up and contact HMRC using the official details on GOV.UK.

HMRC said I'm owed a tax refund - is that real?

Genuine refunds are handled through your tax account or official correspondence, not an unsolicited call asking you to "confirm your bank details" to release the money. Treat any such call as a scam and check your tax position via GOV.UK instead.

I gave a fake HMRC caller my details - what now?

Act quickly. If you shared bank or card details or made a payment, contact your bank immediately and report the fraud to Action Fraud. Our guide on what to do if you've been scammed walks through the full recovery steps.