Paypal checkout method now passes tax per itemThis is kind of an example thread of what I expect we will be seeing.
I am implementing the myff site shop in the new shop component, and have been playing about with how paypal deals with tax.
The original relied on implementing a rule about tax in the paypal account, but now I have added some lines to the nopcart.js script.
The new lines calculate tax per item and passes it in a field to paypal.
This is not currently true for the other payment gateways.