Can I void an employee paycheck that has already been processed?

In voiding a paycheck, Leeann. There are two workarounds I can provide. Let me share that with you.

First, if the error you're referring to is with the amount. You can void it if you have the option on your screen.

Follow these to void the paycheck:

1. Go to your Workers tab.
2. Select the Employees list and choose the employee's name.
3. Choose Paycheck List and choose the paycheck that you want to Void. 
4. Confirm if the check has been cashed.
5.  Confirm the action by marking the checkbox, then select Void Paycheck.

However, if you don't have the option of voiding the check, I suggest contacting our support for them to assist in voiding the paycheck for you.

 I'm sharing these articles for you to check and assist with your paychecks: 

• Add pay history to QuickBooks Online Payroll
• Set up and manage payroll schedules
• Set up, change, or delete employee-paid payroll deductions

Keep me posted if you still have concerns with your payroll. Have a great day!