Any payroll people out there that can help with an overpayment? Colleague has been told that there is a possibility that he may have been overpaid in the sum of 20K over a period 4 years. He is leaving company at end of month so can't be deducted from wages. Like a lot of us, what comes in, goes out so has not got any money tucked away. Assuming that it is an overpayment, is there a minimum amount that can be paid? how does it work, i.e. from his bank account and how is tax and ni calculated as he would have been paying 40% tax on some of this additional money?