1. Thomson Reuters Tax & Accounting software and research solutions
  2. Thomson Reuters ONESOURCE corporate tax software and services
  3. Global tax determination software| Thomson Reuters ONESOURCE

onesource determination

Global tax determination software

Get accurate sales, use & exercise tax, VAT, and GST for your indirect tax calculations

Why choose ONESOURCE Determination

As your enterprise business grows, calculating, collecting, and reporting for global indirect tax purposes gets more complicated. You need to accurately report on value-added tax (VAT), goods and services tax (GST), and sales and use tax – no matter how often the rates change. Our cloud-based global tax determination software allows companies to automate transactions without the headache of managing and maintaining an in-house tax engine or reporting system. Many Fortune 500 companies have relied on our patented global tax technology for more than a decade. Because it’s in the cloud, our tax automation software can scale quickly to the size of your company, for less cost.


Managing indirect tax compliance around the world

Thousands of domestic and multinational corporations count on Thomson Reuters ONESOURCE for the only truly complete indirect tax solution — from research to determination and compliance.

We wanted to use a simple system, a single set of rules that the tax department could control — not IT and not the end user — to make sure that our tax liability was accurate.

What you get with our global tax determination software

Unique patented process

Accurately calculate your global indirect tax with the only patented, end-to-end automated solution for sales, use, and excise tax, GST, and VAT on the market.

Flexible integration

Connect to ERP, financial, billing, and e-commerce payment systems through pre-built and custom integrations.

Trusted tax information

Reduce the risk of audit-triggering mistakes, thanks to our in-house expertise backed by SSAE 18 and ISAE 3402 certified processes.

Powerful personalization

Ensure all your global tax liability needs are met with our patented process that handles corporations of all sizes and geographic reach.

Powerful integrations to ERP and financial applications

With Thomson Reuters ONESOURCE Determination, you can keep using the business systems you know and love, while improving the way you manage global transaction tax.

  • Seamlessly connect to your existing ERP, CRM, e-commerce, or POS platform and other purchasing systems to make sure your global indirect tax calculation and compliance is consistent across your company worldwide
  • Integrations available for both the on-premise and cloud-based technology versions of Determination
  • Use standard APIs to connect your global sales tax software behind the scenes for a seamless experience, instead of worrying about complex software implementations
  • Tailor your tax automation software integration to your specific workflow processes, so you'll be up and running with little to no downtime

For more information about the business systems we integrate with, visit our integrations directory.

See how it works

Have questions about global tax and automation? ONESOURCE Determination has answers. Learn how to configure your company structure, set up tax calculations for global jurisdictions, streamline tax returns, and more.


Ready to start a conversation?

Need more information about how our solutions can work for you? Drop us a line and someone from our sales team will get back to you. Or call a regional representative at

+1 800 865 5257