Martin Lewis has issued a warning to all workers in the UK to check their payslips carefully for an 'X' symbol.
The money saving expert appeared on his live ITV programme, answering questions from the public about their finances. One woman, Tina, called in because she'd been charged too much tax and was worried about how she'd make ends meet.
She had been taxed over £800 for a month's work on a 16 hour contract, but had been picking up lots of overtime. The concerned caller added: “My tax code is now back to 1257L, but I’m short £500, worrying about money. Will I get a tax rebate?”