Glad to hear again from you, @AcctnAsst.

Let me to share some information to resolve the error in your payroll records.

First, for your underpaid employee, we can temporary create a Salary type net to gross check to calculate the employee's correct wage and payroll taxes. Once you have the correct figures, don't save the net to gross check nor create an unscheduled payroll check since it will duplicate the manual paycheck you've already process. Instead, let's record a YTD.

Here's how:

1. Click the Help menu.
2. Choose About QuickBooks .
3. Press Ctrl + Alt +Y on your keyboard, then click on Next.
4. In the Employee Summary Information window, select the employee that was underpaid.
5. Double-click on the employee's name.
   1. In the YTD Adjustment window, select hourly wage as the pay type.
   2. Enter the figures and hours from the temporary Net-To-Gross check.
   3. Type in the tax amount.
   4. Click on Account Affected button.
      • If the manual paycheck is already recorded in your register, choose Affect Liability and Expense account but not the bank account.
      • If the manual paycheck is not yet recorded on your bank register, select Affect liability, expense and bank accounts.
   5. Click Ok.
6. Review the YTD Adjustment details.
7. Click Ok.

On the other hand, the most convenient way to resolve the overpayment made to your employee is to deduct it on the next payroll. Just inform the employee ahead of time.

Keep in touch with me here in the Community if you have other questions about managing your employees payroll information. I'm just a few post away.