> it puts a lot of burden on ecommerce/online stores to 1) Determine where the customer is from 2) Have a database of sales taxes for all states. But it can be

> it puts a lot of burden on ecommerce/online stores to 1) Determine where the customer is from 2) Have a database of sales taxes for all states. But it can be done, I am sure. Of course it can be done, because they are already doing it in the final checkout. They just need to reveal the number earlier in the process. If they have to ask for a location to do that, just say so --- e.g. "We need your zip code to show you the final price including tax"