The tax office is warning about fake phone calls — it does not call you about your return

Portugal’s tax authority (AT) has warned of fraudulent calls in which someone claims to be the tax office and asks you to press a key to "correct a discrepancy" in your income declaration. AT states plainly that it does not make phone calls for this purpose, and that the same operation also runs through fake emails with links and SMS messages. Its recommendation is to ignore such calls. In the national cybersecurity centre’s 2024 report this technique — vishing, voice phishing — accounted for 18.31% of all social-engineering cases.