There seems to be a problem with the coupon system and sales tax, at least with the Paypal, Paysystems and Linkpoint plugins (the only ones I have checked.) When a customer uses a coupon with a percentage discount (I haven't tried it with a fixed price discount), the discounted amount is computed as though no sales tax is due, and sales tax is not added to the purchase price that is sent to the payment processor. I'm sure this will be fixed fast based on the quick action of support (Alex) in the past. Bill
Bill, have you tried without coupon? Could you send me exact URL, aMember CP (admin login info) and FTP info?
Looks like I was wrong -- the coupon system is adding the tax properly. I must have run the test with a username that had not filled out the address field. Sorry and thanks.