The ATO is warning taxpayers to protect their personal and financial details following a sharp spike in reports of tax-related email scams.
Since June, reports from the public of 'phishing' scams have quadrupled from 3,586 to 15,441 compared with the same period last year.
"While the public is reporting scam emails to the ATO in increasing numbers, scammers are also becoming more sophisticated in the way they trick taxpayers into handing over their personal details," Tax Commissioner Chris Jordan said.
"We advise people to be vigilant of emails that mimic the ATO's online publications. Think very carefully before clicking on links and attachments in emails or on social networking sites.
"The ATO will never send taxpayers an email asking them to confirm, update or disclose confidential information including your name, date of birth, home address, passwords or credit card details."