If you overpay a leaver, you need to process the correct final payments to establish what the employee owes back.
NOTE: If you don't require the employee to repay any overpayments, you don't need to change their payroll. The employee's payments recorded in payroll already reflect the payments you sent them.
If you've already processed the employee's final payment and need to change it, follow the steps below. Alternatively, if you haven't processed the last payment yet, follow the process an employee's final pay article.
If you've already given the employee their P45, don't provide a new one. To let the employee know the corrected values, give them a new payslip.
If the employee owes more than their final payment, roll back further and spread deductions over more than one period. You then need to recover the remaining money owed from the employee outside of payroll.
TIP: If you're unsure how to handle employee overpayments, contact ACAS for advice.