People should check the code on their payslips as it could save them £1,000s, says Money Saving Expert Martin Lewis.
The code is used by employers or companies providing a pension to determine how much money is taken off workers' pay or pensions. But he warns in his latest Money Saving Expert newsletter those who use the wrong tax code could be paying too much or too little.
It means you could be entitled to get cash back if you have overpaid, but it could also mean you may have to pay some money back back if you have underpaid, reports the Mirror Online.
