Hello CRB72,
QuickBooks is a versatile program that enables you to manage your accounting with ease. I'll be glad to share more info and steer you along the right path so you can achieve your QuickBooks with ease.
Based the details you've share above, I encourage to check out the following article that shows you how to: Set up and use sales tax in QuickBooks Online. Feel free to to check out the helpful resource below for steps on how QuickBooks calculate the taxes:
You're more than welcome to ask other questions as you browse through the articles. I'll be one message away in case you have other question.