Corporate financial reporting, tax and trade compliance software and services for seamless compliance for corporations, multi-nationals and shared service centres around the globe Why corporate tax departments choose ONESOURCE There are a lot of options out there when it comes to automation solutions for corporate tax processes. Hear from our Taxologist finalists and winners on why their companies chose ONESOURCE to simplify their business and compliance needs. ONESOURCE is your all-in-one tax engine - whether it's corporate income tax, sales and use, and VAT determination taxes for anywhere in the world - including South America and India which can be extremely complex, our ONESOURCE tool is for you. Thomson Reuters ONESOURCE Determination is a tax calculation engine for the United States and Canada that determines and stores Sales and Use Taxes, VAT, Superfund Excise Taxes (sale/use of chemicals or hazardous substances in real time with volumetric-based calculations), and GST on all business sales and purchases, and seamlessly integrates with Sage Intacct enabling you to increase accuracy of tax calculation reducing the risk of triggering an audit, manage exemption certificates, prepare returns, and much more for the United States & Canada all in one product. Built on cloud-native technology, ONESOURCE Determination automates new tax rates and rules with no downtime updates, automates manual, repetitive work from your sales processes allowing you more time to focus on strategic initiatives.