Unlock accuracy and efficiency with Vertex TaxCalc, global tax determination software

Vertex O Series provides a robust tax determination engine for businesses of every size and industry. Calculate complex tax scenarios in real-time using continually updated global content to support both sales and purchase transactions. Leverage a single tax engine across all transaction systems. From small- to mid-market to global enterprise, businesses can implement the capabilities they need today and easily scale as they grow.

Vertex O Series is supported by 800+ million data-driven tax rules for sales, use, and value-added tax, regularly updated by our global research team. 

This solution further improves tax accuracy by offering industry-specific content for diverse and complex markets such as leasing, communication services, hospitality, and oil & gas to support sales tax determination. 

Add tools to your Vertex O Series tax engine to increase tax accuracy, improve internal efficiency, and streamline workflow. Empower your organisation with added capabilities designed to keep business frictionless.

The ability to integrate with a wide range of ERP, e-commerce, marketplace, procurement, CRM, and other financial systems means you can centralise tax determination - improving tax accuracy and consistency for your business. Scaling the tax function can be done quickly and easily as you add new systems and evolve your IT landscape.