Welcome to the Vertex ® Cloud REST (Representational State Transfer) API (Application Programming Interface). With the Vertex Tax API, you get easy access to high quality, transaction tax calculations and address verification. Depending on the access key you are using, you can complete calculations securely against your own environments using any of the commonly available API development and testing tools.
About Vertex Cloud
Vertex Cloud is a cloud-based sales and use tax solution that is built on industry-leading Vertex software. Vertex Cloud integrates with leading ecommerce platforms and mid-market ERP systems. Customers can use Vertex Cloud to manage complex sales and use tax across multiple jurisdictions and states. Vertex Cloud provides tax calculations and signature-ready PDF returns in one comprehensive solution.