Welcome back to the Community, MWCGroup.
It's great to have you with us again and it's awesome that you've been using the bank feed connection to manage your transactions in QuickBooks Online. It's a fabulous option to speed up the process and I'm glad to hear that you've been exploring things like banking rules as well.
I can see how having a batch option for applying correct sales tax codes to transactions would be useful here. Bank Rules are useful for these sorts of situations, and I can see how having different customers and amounts each time might complicate matters. However, when looking the options for setting up a bank rule, selecting a customer name isn't necessary. You can also explore the Description option in the When the transaction meets section, then choose the tax code in the next section to see if that works to add your transactions the way you'd like. Take a look at the following article to get an in-depth look at banking rules: How to set and use banking rules for downloaded transaction
If those rules still can't be configured the way you'd like them, manually adding the sales tax codes to your bank feed transactions is the way to get the job done. I know this can take time to accomplish, and since our goal is to make things as easy as possible with managing your books, I recommend leaving feedback for our product development team by following these steps: How do I submit feedback? This helps us with the growth and evolution of the program to continue to meet business owners' needs.
I'll be here if you have further questions!
