Can I adjust the amount of PAYG withholding that QB calculates on a lump sum payment to an employee?

Hi beth12,

You can adjust the PAYG amount on an unfinalised pay run. Let me guide you on how to do it in QuickBooks. 

1. Open the unlocked pay run and select an employee. 
2. On Actions button select Adjust PAYG. 
3. A new line will show in the dialog box that says PAYG Adjustments.
4. Enter the dollar amount that you wish the adjustment to be for.

Let me know how it went! You can drop a comment below and I'll be sure to respond to you.