Hi again, Anne.

Adjusting sales tax is allowed in QuickBooks Desktop. Instead of creating a journal entry, you can record the adjustment in the Sales Tax Center. Here's how:

1. Go to the Vendor menu, look for Sales Tax, and then click Adjust Sales Tax.
2. Enter all required information including the Adjustment Account.
3. Select the Reduce Sales Tax By option. 
4. Enter the amount of the credit and click OK.

Here's an article for additional info: Process Sales Tax Adjustment.

Please continue to add a reply below if you have follow-up questions.