I'm trying to set tax rates to 0% for a specific customer group ('business'). I configured all tax rates to apply only for customer group 'private', and set a new tax rate to 0% for group 'business'.
In the product view and the search, products are correctly shown with 0% tax. But after adding a product to the cart, it shows up with regular tax rates.
Do you have any idea of what I might be doing wrong? I disabled the automatic group change based on VAT id..
Thank you in advance