Can I repay an employee for CPP that we deducted when we shouldn't have.

Hi userruth1,

Welcome to the Community. QuickBooks offers a powerful payroll module that simplifies the way you manage your books. I'll be happy to share more info and steer you in the right direction. 

In order to accomplish your goal,  you can run a bonus paycheque for the employee in question. The program makes it easy to process a bonus cheque and I encourage you to check out this helpful article that shows you how: How to create a bonus paycheque. For reference, here's a helpful article that shows you how to: How to calculate Canada Pension Plan in QuickBooks Online Payroll. I encourage you to browse through the articles and let me know if you have any other questions below. I'll be a message away!