Providing you with the appropriate solutions is my priority here, leafittome. Applying sales taxes could be vital to correctly calculate and collect them from your sales entries.
To start with your concern, I'd like to know which specific area or what transactions you are referring to where sales taxes aren't included. Are you trying to create sales transactions? Or is this about tax calculations from forms? Additional details you can give will help us determine what specific fixes to provide.
Furthermore, you can check out these resources to ensure the setup of your sales taxes in the application. Guidelines are also provided to record its payments:
I'll wait for your response to have this sorted out and give you the finest experience with QuickBooks. Take care!