It's good to see you here in the Community, tnolen.
Thanks for getting back to us. Let me help you go over to your invoices and have those taxes calculate properly.
I've tried to replicate this and was able to get the correct sales tax amount.
To better isolate this issue, as an initial step, let's make sure your QuickBooks release version is up to date.
After that, try to re-create the invoice to check if it's calculating correctly. If you're still getting the same issue, you may want to open a sample company file. This is to check whether this has something to do with your company file or QuickBooks Program.
If you're able to get the correct sales tax amount using the sample company file, we can verify and rebuild your data. The data verification process in QuickBooks is a tool that examines the health of your QuickBooks company data file.
To Verify Data:
To Rebuild Data:
These articles are a good reference:
For additional help, you can also reach out to our QuickBooks Desktop Support. They have additional tools to assist you in getting this resolved.
Let me know how it goes or if you ran into a different situation by leaving a reply below. I want to make sure your taxes are calculated correctly.