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Onesource determination

Global tax determination software

Calculate accurate Sales, Use, GST, VAT, and Excise tax

What can ONESOURCE Determination do for you?

As your enterprise business grows, calculating, collecting, and reporting for global indirect tax purposes gets more complicated. You need to accurately report on sales and use tax, goods and services (GST) tax, value-added tax (VAT) and excise tax – no matter how often the rates or rules change. You also need to plan responses to market disruptors like changing economic nexus rules and tax regulations. Our cloud-based, global, tax determination software allows companies to automate tax calculations on transactions without the headache of managing and maintaining an in-house solution or reporting system. 65% of Fortune 500 companies and multinational corporations have relied on our global tax technology for more than a decade. As a cloud-native application, our tax automation software minimizes the cost of scaling quickly to meet the needs of a  growing business, without the worry of downtime for updates.

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See how it works

Have questions about tax automation? Thomson Reuters has answers. Learn how ONESOURCE Determination simplifies configuring a company structure, setting up tax calculations for global jurisdictions, streamlining tax returns, and more.

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

Automate tax determination

Automate the calculation of taxes globally with an automated solution for Sales Tax, Use Tax, GST, VAT, and Excise Tax.

Integrate to business systems

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

Trust our tax

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

Customize tax rules and policies

Ensure global tax liability needs are met by creating custom tax rules and policies no matter where business takes you across the globe.

Powerful integrations to ERP and financial applications

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

  • Make global tax calculations and compliance consistent across the business.   Seamlessly integrate with existing business platforms and applications including ERP, CRM, e-commerce, POS, or other financial systems.
  • Use standard APIs to connect ONESOURCE Determination to business workflows, applications, or platforms  without a complex software implementation.
  • Tailor an integration to a specific workflow or processes without disrupting the business.

Visit our integrations directory for more information.

Ready to start a conversation?

See why Fortune 500 companies have relied on ONESOURCE Determination for more than a decade. Drop us a line and someone from our sales team will walk you through a personalized demo.

Or you can call a regional representative at

+1 888 885 0206