Hi @Kymley,

Currently, there isn't an option to automatically mark an online banking transaction as taxable sales when adding it to your customer's invoice.

In the meantime, you can continue selecting the Tax field or putting a check mark on the Tax column on the invoices of your customers to mark as taxable sales.

I suggest sending the same message to our product engineers through feedback. This way, they'll know how to improve your experience in QuickBooks. Just go to the Gear icon then choose Feedback.

Please know that you can always get back to us here in the Community if you have any other concerns.