TaxCalcMode = billing still bugged
This issue exists in ML8 (all editions including 8.0.1.4).
The bug is this: When TaxCalcMode = billing , anonymous customers (new users) adding items to cart and then Register & Checkout (or Skip Login & Checkout) will have tax calculated on a blank billing address, causing zero tax.
There is no patch or release for this issue at this time.
TaxCalcMode = shipping works correctly, which is actually the more common method to use. Consult your state tax authority where your business has nexus to determine correct method.
Erik Sutton
AspDotNetStorefront Technical Support