BERWYN, Pa.--(BUSINESS WIRE)--Vertex Inc., the leading provider of corporate tax solutions, announced today significant expanded capabilities for both the on premise and hosted versions of their tax processing solution for retailers. Specifically, this upgrade supports global retail rates and rules to yield the most accurate processing of Value Added Tax (VAT) worldwide. New European Union regulations in 2015 have clarified how VAT will operate for ecommerce, and how revised rules will affect r