ONESOURCE Determination 

Harness the power of automation with determination done right

In a complex indirect tax environment, automation is a game-changer. Calculate tax in milliseconds, accelerate efficiency and take risk out of the equation with numbers you can count on.

What can ONESOURCE Indirect Tax Determination do for you?

Overview of why a tax engine is useful, and how it can help automate

Calculate tax in milliseconds

Determination done right, every time. Automatically calculate GST, VAT, sales and use tax and excise tax using accurate rates and rules provided to you through ONESOURCE Determination.

How OS Determination integrates seamlessly with ERP, financialm POS and other systems

Let your systems work in harmony

Easily connect ONESOURCE to your other business systems, such as ERPs, using out-the-box or custom integrations.

Avoid costly mistakes

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

Content you can trust

Drive every calculation and decision with the latest indirect tax content. Our global experts have you covered.

Custom tax rules and policies

Tailor tax rules and policies to meet global tax liability and compliance needs, no matter where you operate.

A single source of truth

Calculate and report tax from one source across all business systems.

The value of ONESOURCE Determination

See how it works

Watch the video and learn how ONESOURCE Determination simplifies configuring a company structure, setting up tax calculations for global jurisdictions, streamlining tax returns, and more.

"ONESOURCE Indirect Tax Determination independently validates GST and triggers workflow, where OITD results vary from the invoice document. This allows the tax team to identify and address issues at the time of invoice processing, rather than at the GST or VAT return preparation stage."

Meiting Liu
Senior Manager - Tax, Orica

Manage product and service-specific taxability.

Tailor an integration to a specific workflow or process without disrupting the business.

Use standard APIs to connect ONESOURCE Determination to business workflows, applications, or platforms without a complex software implementation.