Sales taxes are collected from a customer and paid to the city/state on a sale. When you enter a BILL this means you’re paying for a something and you do not need to keep track of sales taxes separate. You would enter your bills with the invoice and pay your vendors. It is the vendors responsibility to collect and report the taxes. If you have a Seller’s Permit then you should provide that to your vendors so they don’t charge you sales tax on inventory you purchase.