Hello there, @KHave.
Thank you for providing details. I can share some insights about the cash basis sales tax in QuickBooks Desktop.
The accounting method you use can affect the amount of sales tax you owe. When using the cash basis method, you only report your income when you create a transaction and receive its payment.
You'll only have to pay the amount on your sales tax center, and there's no need to amend. If necessary, you can reach out to your accountant about which accounting method is most appropriate for your company.
Keep me posted if you have follow-up questions about sales tax. I'm still here to help you further. Have a good one.