We are facing an issue on Magento 2.2.5 regarding discount on product price. Here is the use-case: I have a product with Base Price = 18€, Tier Price (I'm working with Customer groups) = 7.23€, FPT = 2.8€ and VAT = 22% The price is 12.24€ for this product ( (7.23+2.8)*1.22 = 12.2366), everything is fine so far. Please note that in the configuration, we show the product price tax included on the catalog and the checkout. I have a coupon which apply 20% discount this product.
I cannot even explain the output since it does not make sense to me.
Thanks for your help !