Already answered in your other post on the same topic: http://www.zen-cart.com/showthread.php?201697-Paypal-Express-checkout-and-local-taxes
Type: Posts; User: DrByte
Already answered in your other post on the same topic: http://www.zen-cart.com/showthread.php?201697-Paypal-Express-checkout-and-local-taxes
Yes. That's the only way it works.
It sounds like you've not gone through a complete checkout yet.
A - The customer adds to their cart.
B - Then has two choices:
1. Normal checkout, which...
Zen Cart can only assess taxes when it knows the customer's address. So, that either happens as a result of the customer first creating an account on your store, or after they've logged in to PayPal...