# Symmetry Docs

## Docs

- [Available calculators](https://docs-test.symmetry.com/cbs/overview/available-calculators.md): Every calculator offered by Calculators by Symmetry (CBS), with a one-line description and the integration paths that support it.
- [Widgets vs. API](https://docs-test.symmetry.com/cbs/overview/choose-path.md): Decide between Calculators by Symmetry (CBS) widgets and the calculators API based on what you're trying to build.
- [What is Calculators by Symmetry (CBS)?](https://docs-test.symmetry.com/cbs/overview/what-is-calculators-by-symmetry.md): An introduction to Calculators by Symmetry (CBS) and the paycheck calculators you can embed in your site or application.
- [Introduction to Symmetry Guides](https://docs-test.symmetry.com/guides/getting-started/symmetry-guides-overview.md): Symmetry Guides is a proactive, real-time compliance intelligence hub built on the same trusted tax research database that powers Symmetry’s payroll tax products.
- [Form I-9 Overview](https://docs-test.symmetry.com/i9/overview/form-i-9-overview.md): Form I-9, officially known as the Employment Eligibility Verification form, is a federal requirement issued by U.S.
- [Supplement A Overview](https://docs-test.symmetry.com/i9/overview/supplement-a-overview.md): Supplement A is required when a preparer or translator helps an employee complete section 1 of Form I-9.
- [Supplement B Overview](https://docs-test.symmetry.com/i9/overview/supplement-b-overview.md): Supplement B of Form I-9 is used for rehiring employees or addressing issues related to reverification of work authorization.
- [Symmetry I-9 Overview](https://docs-test.symmetry.com/i9/overview/symmetry-i-9-overview.md): Symmetry I 9 powered by Workbright is a seamless, embeddable solution designed to streamline employment verification for both service providers and employers.
- [Introduction to Symmetry Minimum Wage Finder](https://docs-test.symmetry.com/mwf/overview/introduction-to-symmetry-minimum-wage-finder.md)
- [Introduction to Payroll Point](https://docs-test.symmetry.com/prp/overview/introduction-to-payroll-point.md): What Payroll Point is, what it does, and how to find your starting point.
- [Introduction to Symmetry Payroll Forms](https://docs-test.symmetry.com/spf/overview/introduction-to-symmetry-payroll-forms.md): What SPF is, what it does, and how to find your starting point.
- [Retrieve account information](https://docs-test.symmetry.com/ste/api-reference/account-information-and-schema/retrieve-account-information.md): Returns account information and transaction count between two dates (passed as parameters in a GET request).
- [Retrieve account information](https://docs-test.symmetry.com/ste/api-reference/account-information-and-schema/retrieve-account-information-1.md): Returns account information and transaction count between two dates (passed as a POST request).
- [Retrieve API schema](https://docs-test.symmetry.com/ste/api-reference/account-information-and-schema/retrieve-api-schema.md): Retrieve the schema required by the STE Web API.
- [schemaFile operation](https://docs-test.symmetry.com/ste/api-reference/account-information-and-schema/schemafile-operation.md)
- [schemaFileV1 operation](https://docs-test.symmetry.com/ste/api-reference/account-information-and-schema/schemafilev1-operation.md)
- [Check taxability of benefit contributions](https://docs-test.symmetry.com/ste/api-reference/benefits/check-taxability-of-benefit-contributions.md): Retrieve the taxability status of different benefit contributions by employees and employers. This is purely informational and is not required to run before computing payroll calculations.
- [Retrieve benefit information](https://docs-test.symmetry.com/ste/api-reference/benefits/retrieve-benefit-information.md): Retrieve information regarding benefit limits. This is purely informational and is not required to run before computing payroll calculations.
- [Retrieve miscellaneous parameter definitions for benefit types](https://docs-test.symmetry.com/ste/api-reference/benefits/retrieve-miscellaneous-parameter-definitions-for-benefit-types.md): Given one or more benefit types and a pay date, returns the date-effective miscellaneous parameter definitions for each type — including name, data type, default value, validation pattern, pick-list values, and help text. This is the benefit analog of /v1/jurisdictionData and is purely informational…
- [Get OpenAPI Specification](https://docs-test.symmetry.com/ste/api-reference/documentation/get-openapi-specification.md): Returns the OpenAPI 3.0 specification for this API in YAML format.
- [Translate an address to a location code](https://docs-test.symmetry.com/ste/api-reference/location-code/translate-an-address-to-a-location-code.md): Determine a location code based on a submitted home or work address. Location codes are used by the Symmetry Tax Engine to identify which state, county, and jurisdiction boundaries contain a given address.
- [Retrieve potentially applicable taxes for a location](https://docs-test.symmetry.com/ste/api-reference/location-tax-information/retrieve-potentially-applicable-taxes-for-a-location.md): Retrieve potentially applicable taxes using the legacy location code
- [Retrieve taxes for a location](https://docs-test.symmetry.com/ste/api-reference/location-tax-information/retrieve-taxes-for-a-location.md): Retrieve potentially applicable taxes for a location
- [Retrieve unique parameters for specific taxes](https://docs-test.symmetry.com/ste/api-reference/location-tax-information/retrieve-unique-parameters-for-specific-taxes.md): Retrieve list of unique miscellanous parameters needed to compute specified taxes. Please note that this information is also returned by the `/taxIdList` and `/setTaxList` endpoints.
- [Hosted API overview](https://docs-test.symmetry.com/ste/api-reference/overview.md): Base URLs, authentication, and the tools — live Swagger and a Postman collection — for working with the hosted STE web API.
- [Calculate a gross-up payment](https://docs-test.symmetry.com/ste/api-reference/payroll-calculations/calculate-a-gross-up-payment.md): Compute the gross wages required for desired net pay amount.
- [Compute gross-to-net tax withholding](https://docs-test.symmetry.com/ste/api-reference/payroll-calculations/compute-gross-to-net-tax-withholding.md): Compute payroll taxes based on an employee's gross wages, benefit contributions, and imputed income.
- [Postman collection & environment](https://docs-test.symmetry.com/ste/api-reference/postman-collection.md): Test the hosted STE API with a ready-made Postman collection and environment, including payCalcRequest examples for federal, state, city, county, and multi-state scenarios.
- [List installed STE database versions](https://docs-test.symmetry.com/ste/api-reference/steversions/list-installed-ste-database-versions.md): Returns the STE database versions available in STE_HOME. Any value in the returned list may be supplied as the version query parameter or version header on /v1/payCalc to calculate against that specific database version.
- [STL API overview](https://docs-test.symmetry.com/ste/api-reference/stl-overview.md): Base URL, authentication, and endpoints for the Symmetry Tax Logic (STL) API — the service that turns a payroll calculation into a plain-language explanation.
- [Compare two paychecks and explain the differences](https://docs-test.symmetry.com/ste/api-reference/symmetry-tax-logic/compare-two-paychecks-and-explain-the-differences.md): Accepts two PayCalc contexts. Runs both through STE, computes a structured diff, and returns a single AI-generated narrative explaining only the meaningful differences.
- [Generate AI-powered tax calculation explanations](https://docs-test.symmetry.com/ste/api-reference/symmetry-tax-logic/generate-ai-powered-tax-calculation-explanations.md): Accepts 1-10 tax IDs with a PayCalc context or STE session and returns employee-friendly explanations
- [Get API version information](https://docs-test.symmetry.com/ste/api-reference/symmetry-tax-logic/get-api-version-information.md): Returns current version including major, minor, and revision numbers
- [Retrieve unique tax IDs](https://docs-test.symmetry.com/ste/api-reference/tax-information/retrieve-unique-tax-ids.md): Retrieve a list of taxes using a search string (along with their respective rates, wage bases, credit limits, and more).
- [Benefit Taxability](https://docs-test.symmetry.com/ste/core-concepts/benefit-taxability.md): How employee and employer benefits affect taxable wages in the STE, and how to override the defaults.
- [Configure, Then Calculate](https://docs-test.symmetry.com/ste/core-concepts/configure-then-calculate.md): The setup-then-run workflow the STE uses, and how to send configured JSON payloads to the on-premise SDK.
- [How the STE Works](https://docs-test.symmetry.com/ste/core-concepts/how-the-ste-works.md): The STE calculation model from address to withholding, end to end.
- [Wage Types](https://docs-test.symmetry.com/ste/core-concepts/wage-types.md): The categories of wages the STE recognizes and why they matter.
- [Tax Coverage](https://docs-test.symmetry.com/ste/overview/coverage.md): The jurisdictions and tax types the Symmetry Tax Engine covers across the U.S. and Canada.
- [Hosted API vs. On-Premise SDK](https://docs-test.symmetry.com/ste/overview/hosted-vs-on-premise.md): Choosing between the hosted STE Web API and the locally installed On-Premise SDK.
- [Licensing](https://docs-test.symmetry.com/ste/overview/licensing.md): How STE licensing and authentication work across the hosted Web API, On-Premise SDK, and AI interfaces.
- [Platform and Language Support](https://docs-test.symmetry.com/ste/overview/platform-and-language-support.md): Supported operating systems, architectures, languages, and sizing guidance for the On-Premise STE.
- [Ways to Use the STE](https://docs-test.symmetry.com/ste/overview/ways-to-use-the-ste.md): The five interfaces available for accessing the Symmetry Tax Engine.
- [What Is the Symmetry Tax Engine?](https://docs-test.symmetry.com/ste/overview/what-is-the-ste.md): Precise federal, state, and local payroll tax calculations for the U.S. and Canada.
- [C SDK quickstart](https://docs-test.symmetry.com/ste/quickstarts/c-sdk-quickstart.md): Link the native STE library and calculate withholding for one employee with the C API.
- [.NET SDK quickstart](https://docs-test.symmetry.com/ste/quickstarts/dotnet-sdk-quickstart.md): Embed the STE native library and calculate withholding for one employee with the .NET SDK.
- [Hosted API quickstart](https://docs-test.symmetry.com/ste/quickstarts/hosted-api-quickstart.md): Calculate withholding for one employee with a single JSON request to the hosted STE web service.
- [Java SDK quickstart](https://docs-test.symmetry.com/ste/quickstarts/java-sdk-quickstart.md): Embed the STE native library and calculate withholding for one employee with the Java SDK.
- [U.S. Federal Taxes Overview](https://docs-test.symmetry.com/ste/taxes/federal/federal-taxes-overview.md): Overview of the U.S. federal taxes calculated by the Symmetry Tax Engine, including FIT, FICA, FUTA, railroad taxes, and pension withholding.
- [State Income Tax Overview](https://docs-test.symmetry.com/ste/taxes/state/state-income-tax-overview.md): Overview of state income tax (SIT) support in the Symmetry Tax Engine, covering all 50 states, five U.S. territories, and multi-state withholding.