ONESOURCE Determination vs Symmetry Tax Engine
ONESOURCE Determination
tax.thomsonreuters.comSymmetry Tax Engine
symmetry.comSide by side
| Figure | ONESOURCE Determination | Symmetry Tax Engine |
|---|---|---|
| Price from | — | — |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Tax Compliance Software | 8.6 (#6) | 8.2 (#16) |
| Headquarters | New York, New York, United States | Scottsdale, Arizona, United States |
| Integrations | The product offers pre-built integrations for 60+ financial systems, including SAP, Oracle, and Microsoft Dynamics 365 for Finance and Operations. | The Web API supports secure HTTPS with JSON and XML, while the SDK offers interfaces including C/C++, Java, .NET, .NET Core, and Delphi. |
| Intended users | The product is positioned for business tax teams and supports industries including oil and gas, retail, manufacturing, and technology. | Symmetry lists software developers, payroll or HR service providers, large employers, payroll managers, entrepreneurs, and payment companies as potential users. |
| Purpose | Automates global indirect tax calculations for sales tax, use tax, GST, VAT, and excise tax. | Symmetry Tax Engine is a gross-to-net payroll tax calculation engine for building, embedding, and scaling payroll platforms. |
| Support | ONESOURCE with CoCounsel provides real-time, chat-based answers to product questions. | Symmetry says support includes help with tax accuracy, jurisdiction questions, API and SDK integrations, onboarding, and filing guidance. |
| Tax coverage | Its content covers rates, taxability, and calculation logic for more than 205 countries and territories and over 60,000 tax jurisdictions. | It covers federal, state, local, and employer taxes across all 50 U.S. states, U.S. territories including Puerto Rico, and Canada. |
Plans
In their own words
ONESOURCE Determination
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.
Symmetry Tax Engine
Symmetry Tax Engine calculates gross-to-net payroll taxes for software platforms, payroll providers, employers, and payment companies. It covers federal, state, local, and employer taxes across all 50 U.S. states, U.S. territories including Puerto Rico, and Canada, with calculations for more than 7,000 jurisdictions. Listed tax types include federal withholding, FICA, paid family and medical leave, unemployment and disability taxes, benefits and pre-tax benefit rules, and local taxes such as city, county, school district, and municipality taxes. Deployment is available as a hosted Web API or an on-premise SDK installed in a customer’s environment. The API supports JSON and XML; the SDK supports Windows, Linux, and macOS, with interfaces including C/C++, Java, .NET, .NET Core, and Delphi. The paid product has no free plan, offers a trial by contacting Symmetry, and has pricing on request. Symmetry is headquartered in Scottsdale, Arizona, and was founded in 1984.