Why is qb duplicating payroll expense?

Hello there, @joe56. 

Thanks for sharing your concerns today. There are two possible reasons for duplicate payroll expenses. 

One is when you processed the payroll twice for the pay period. In this case, I suggest you pull up the paycheck list to verify.

Here's how: 

1. Go to the Payroll menu, then select Employees. 
2. Select Paycheck list. 
3. Make sure that the Date Range is correct, then click Run Report.

Then, review it to see if there are duplicate paychecks. If so, select one of those to open the paycheck and click Delete at the footer section. Refer to this article to learn more about deleting or voiding employee paychecks.

Another possible reason is when you downloaded payroll entries from banking. In this case, you'll want to exclude them to fix this issue but we'll need to undo it first. 

Here's how:

1. Go to the Banking menu, then select Banking.
2. Select the bank account used for payroll, then proceed to the Categorized tab.
3. Find the payroll entries and click Undo.
4. Go back to the For review section. Find the same transactions and put a checkmark on the tickbox.
5. Select Exclude.

You can also refer to this article to know about excluding a bank transaction you downloaded into QuickBooks Online.

Get back to me if you have follow-up questions or additional concerns. I'll be here to help you again.