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As part of Vertex’s commitment to providing the best possible service and support, our team will be ending support of REST v1 endpoints as of December 31, 2025.
We encourage you to transition to the latest version of our API to continue receiving the best possible support and to take advantage of new features and improvements. Please note, after December 31, 2025, Vertex will no longer provide support, updates, or bug fixes for REST v1.
To assist with this transition to REST v2, we have prepared the RESTful API v1 to v2 Code Changes Guide to lead you through the process.
There are field changes between REST v1 and REST v2 that must be made to ensure continuity in the flow of your integration. The guide highlights the before and after values of fields that have changed. You can use the guide to find and replace the values you are using in your integration.
The Vertex Developer Network has documentation of the REST v2 tax calculation API for further information.
If you have questions about this change, please contact Vertex Customer Support via Vertex Community.
Explore Vertex Cloud address cleansing, tax calculation, and adjustment file APIs
Learn about security configuration
Learn how to get and use an access token
Learn about tax calculation transactions and configuration components
Download this PDF in preparation for upgrading from v1 to v2 of the REST APIs.
Welcome to the Vertex ® Cloud REST (Representational State Transfer) APIs (Application Programming Interfaces). The Vertex Cloud REST APIs give you access to high quality tax calculations and address cleansing. Depending on the access key that you are using, you can securely calculate taxes against your own environments using commonly available API development and testing tools.
Vertex Cloud is a cloud-based sales and use tax solution that is built on industry-leading Vertex software. Vertex Cloud integrates with leading e-commerce platforms and mid-market ERP systems. Customers can use Vertex Cloud to manage complex sales and use tax across multiple jurisdictions. Vertex Cloud provides tax calculations and signature-ready PDF returns in one comprehensive solution.
