It has also warned of scammers claiming your national insurance number has been used in fraud, and messages offering phoney tax rebates or bogus grants or support.
Read on to find out about some specific HMRC scams readers have recently reported to Which?.
Outsmart the scammersUnsolicited calls
Readers have reported several examples of automated calls purporting to be from HMRC.
The first says that the tax agency will be taking legal action against you for not paying taxes and tells you to press 1 if you want to speak to an officer.
A second message says HMRC has sent you an important letter which has been returned and that you need to press 1 to speak to an agent urgently.
Finally, a third scam call says HMRC needs to access your account, and asks you to go through your security questions.
Emails containing phishing links
The latest HMRC scam emails inform you that your profile or password is about to expire.
These messages are sent from Japanese email addresses and use HMRC branding to appear genuine. One states that you’ve only got 24 hours to complete the process in an attempt to rush you into taking action.
These emails include phishing links, which lead to malicious sites impersonating the tax office.
We shared these scams with HMRC. A spokesperson told us: ‘Criminals are great pretenders. They use emails, phone calls and texts to try and dupe citizens, and often mimic government messages to make them appear authentic.
'Unexpected contacts like these should set alarm bells ringing, so take your time and check HMRC scams advice on gov.uk.'
undefinedHow to report HMRC scams
Text messages:Emails: Letters: Calls:Websites: Social media:source https://www.which.co.uk/news/article/hmrc-issues-scam-warning-how-to-spot-a-dodgy-email-or-phone-call-abwoT2v8O4MU