ONESOURCE Determination vs Tax Series

ONESOURCE Determination automates calculations for sales tax, use tax, GST, VAT, and excise tax. The web-based product connects with ERP, financial, billing, e-commerce, point-of-sale, and payment systems through pre-built or custom integrations. It supplies global tax rates, rules, and calculations in real time, with cloud synchronization to support high transaction volumes. Deployment includes a cloud-based indirect-tax engine and an edge-computing option. Determination Anywhere supports business-specific security and data-residency requirements. Tax content covers specialized jurisdictions and industries, with industry offerings for oil and gas, retail, manufacturing, and technology. Configuration features include company structures, global calculations, and tax-return streamlining. Thomson Reuters says its automated calculations and certified processes aim to reduce audit-triggering mistakes; the processes are backed by SSAE 18 and ISAE 3402 certifications. Pricing is on request, and a free demo can be requested.

Tax Series is web-native corporate tax software for corporate income tax processes, with shared data used across tax work. Its modules cover worldwide provision reporting under ASC 740, corporate tax compliance, and BEPS reporting. Provision supports calculations under U.S. GAAP or IFRS. Compliance automates corporate tax calculations and population of forms including 5471, 8865, and 8858; BEPS supports Country-by-Country reporting and master and local files. Data Collector assigns packages to preparers, reviewers, and approvers and provides real-time project monitoring. Web Services supports two-way data transfer with client systems, data validation, and calculation triggers. A single database also supports planning, audit support, legal entity maintenance, tax calendar, and document management. The vendor describes the product as well suited to medium and large multinational corporate clients, and it supports U.S. corporate taxpayers and multinational corporations. Pricing is on request. Prospective clients can use it for a full tax cycle at no cost through a proof of concept, typically a 2–10 week process. After subscription termination, clients receive three months of read-only access to retrieve data.