Students taking on part-time work and interacting with the tax authority for the first time could be more vulnerable to scams, HMRC said.

In the past year almost one million people reported scams to HMRC.

Nearly half of all tax scams offer fake tax refunds, which HMRC does not offer by SMS or email.

The criminals involved are usually trying to steal money or personal information to sell on to others. HMRC is a familiar brand, which scammers abuse to add credibility to their scams.

Links or files in emails or texts can also download dangerous software onto a computer or phone. This can then gather personal data or lock the recipient’s machine until they pay a ransom.

Between April and May this year, 18 to 24-year olds reported more than 5,000 phone scams to HMRC.

Mike Fell, head of cyber security operations at HMRC, said: “Most students won’t have paid tax before, and so could easily be duped by scam texts, emails or calls either offering a ‘refund’ or demanding unpaid tax.

“Students, who will have had little or no interaction with the tax system might be tricked into clicking on links in such emails or texts.

“Our advice is to be wary if you are contacted out of the blue by someone asking for money or personal information. We see high numbers of fraudsters contacting people claiming to be from HMRC. If in doubt, our advice is – do not reply directly to anything suspicious, but contact HMRC through GOV.UK straight away and search GOV.UK for ‘HMRC scams’.”