Vertex Inc, based in King of Prussia, Pennsylvania, specializes in tax technology solutions tailored for a variety of industries including retail, technology, and manufacturing, both in the U.S. and internationally. With a focus on tax determination, compliance, and reporting, the company offers a comprehensive suite of services such as tax data management, document management, and analytics. Vertex sells its products through licenses and subscriptions, and also provides implementation, training, and outsourcing services for transaction tax returns, leveraging its expertise since 1978.