Workers have been warned by Martin Lewis to check for an "X" on their payslips. If you spot it then there is a chance you are on the wrong tax code, according to the Money Saving Expert founder, Liverpool Echo reports.
The warning came as he appeared on his ITV Money Show Live The finance guru answered a question from viewer Tina, who said she had been overtaxed and wanted to know if she was entitled to a rebate.
She said: "I’m on a 16-hour contract, and last month, I did lots of overtime. I was put on the basic rate temporarily and overtaxed by more than £800."