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On the recordRead 10 Oct 202620 facts
Symmetry Tax Engine
Symmetry Tax Engine · Scottsdale, Arizona, United States · founded 1984
Plans and prices
Symmetry Tax Engine
Priced on request
Tailored pricing based on product needs and usage; tax updates, implementation, and support included
Read 10 Oct 2026 · symmetry.com
On the record
- AI tools
- The product page describes an MCP interface for querying the production tax engine from Claude, Cursor, Copilot, and ChatGPT; it is read-only by design.symmetry.com · read 10 Oct 2026
- API access
- Yessymmetry.com · read 20 Sep 2026
- API security and data
- The product page says API communications are encrypted in transit and the engine does not store personal data; it stores anonymized usage metrics.symmetry.com · read 10 Oct 2026
- Deployment
- The engine is available as a hosted Web API or an on-premise SDK installed in the customer's local environment.symmetry.com · read 10 Oct 2026
- Integrations
- The Web API supports secure HTTPS with JSON and XML, while the SDK offers interfaces including C/C++, Java, .NET, .NET Core, and Delphi.symmetry.com · read 10 Oct 2026
- Intended users
- Symmetry lists software developers, payroll or HR service providers, large employers, payroll managers, entrepreneurs, and payment companies as potential users.symmetry.com · read 10 Oct 2026
- Interfaces and operating systems
- Its technical information lists JSON and XML for the Web API and SDK, plus SDK support for Windows, Linux, and macOS.symmetry.com · read 10 Oct 2026
- Jurisdictions covered
- 7000symmetry.com · read 20 Sep 2026
- Performance and uptime
- The product page reports an average calculation time of 3.32 milliseconds and 99.99% uptime.symmetry.com · read 10 Oct 2026
- Purpose
- Symmetry Tax Engine is a gross-to-net payroll tax calculation engine for building, embedding, and scaling payroll platforms.symmetry.com · read 10 Oct 2026
- Security compliance
- Symmetry says it is SOC 2 Type 2 compliant and lists TLS 1.3 for data in transit and AES-256 encryption at rest in AWS.symmetry.com · read 10 Oct 2026
- Support
- Symmetry says support includes help with tax accuracy, jurisdiction questions, API and SDK integrations, onboarding, and filing guidance.symmetry.com · read 10 Oct 2026
- Supported tax types
- Federal withholding; FICA; paid family and medical leave; SDI/VDI/employee SUI; courtesy withholding; FUTA; SUTA; benefits and pre-tax benefit rules; city; county; school district; municipality; earned income; privilege; local services; JEDDs/JEDZsymmetry.com · read 20 Sep 2026
- Tax coverage
- It covers federal, state, local, and employer taxes across all 50 U.S. states, U.S. territories including Puerto Rico, and Canada.symmetry.com · read 10 Oct 2026
- Tax jurisdictions
- The product calculates taxes for over 7,000 taxing jurisdictions.symmetry.com · read 10 Oct 2026
- Trial
- The product FAQ invites prospective customers to contact Symmetry to learn about its free trial; it does not state a trial duration.symmetry.com · read 10 Oct 2026
- Updates
- The on-premise SDK is released monthly with interim releases when tax changes are more frequent, and Web API updates are released more frequently.symmetry.com · read 10 Oct 2026
