> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://avalara.ferndocs.com/_mcp/server.

# Public reference

> API solutions for end-to-end tax compliance.


## API Docs

- Public reference [List Local Exempt Jurisdictions](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-local-exempt-jurisdictions.md)
- Public reference [Get All Customers And Suppliers With Country Params](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-all-customers-and-suppliers-with-country-params.md)
- Public reference [Query Juris Names](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/query-juris-names.md)
- Public reference [Query Rate Options](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/query-rate-options.md)
- Public reference [Query State Reporting Codes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/query-state-reporting-codes.md)
- Public reference [Query Tax Type Mappings](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/query-tax-type-mappings.md)
- Public reference [List Valid Certificates For Customer](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-valid-certificates-for-customer.md)
- Public reference [List Ava File Forms](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-ava-file-forms.md)
- Public reference [List Certificate Attributes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-certificate-attributes.md)
- Public reference [List Certificate Exempt Reasons](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-certificate-exempt-reasons.md)
- Public reference [List Certificate Exposure Zones](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-certificate-exposure-zones.md)
- Public reference [List Classification Parameters Usage](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-classification-parameters-usage.md)
- Public reference [List Communications Transaction Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-communications-transaction-types.md)
- Public reference [List Communications Service Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-communications-service-types.md)
- Public reference [List Communications TS Pairs](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-communications-ts-pairs.md)
- Public reference [List Regions By Country And Tax Type And Tax Sub Type And Rate Type](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-regions-by-country-and-tax-type-and-tax-sub-type-and-rate-type.md)
- Public reference [List Countries](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-countries.md)
- Public reference [List Rate Types By Country](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-rate-types-by-country.md)
- Public reference [List Regions By Country](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-regions-by-country.md)
- Public reference [List Rate Types By Country Tax Type Tax Sub Type](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-rate-types-by-country-tax-type-tax-sub-type.md)
- Public reference [List Cover Letters](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-cover-letters.md)
- Public reference [List Cross Border Codes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-cross-border-codes.md)
- Public reference [Get Cross Border Code](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-cross-border-code.md)
- Public reference [List Cross Border Sections](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-cross-border-sections.md)
- Public reference [List Currencies](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-currencies.md)
- Public reference [List Entity Use Codes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-entity-use-codes.md)
- Public reference [List Filing Frequencies](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-filing-frequencies.md)
- Public reference [List Item Reverse Sync Events](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-item-reverse-sync-events.md)
- Public reference [List Item HS Code Classification Status](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-item-hs-code-classification-status.md)
- Public reference [List Items Recommendations Status](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-items-recommendations-status.md)
- Public reference [List Items Status](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-items-status.md)
- Public reference [List Jurisdictions](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-jurisdictions.md)
- Public reference [List Jurisdiction Tax Types And Sub Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-jurisdiction-tax-types-and-sub-types.md)
- Public reference [List Jurisdictions By Rate Type Tax Type Mapping](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-jurisdictions-by-rate-type-tax-type-mapping.md)
- Public reference [List Jurisdictions Hierarchy](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-jurisdictions-hierarchy.md)
- Public reference [List Jurisdictions By Address](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-jurisdictions-by-address.md)
- Public reference [List Jurisdiction Types By Rate Type Tax Type Mapping](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-jurisdiction-types-by-rate-type-tax-type-mapping.md)
- Public reference [List All Marketplace Locations](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-all-marketplace-locations.md)
- Public reference [List Location Questions By Address](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-location-questions-by-address.md)
- Public reference [List Marketplace Locations](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-marketplace-locations.md)
- Public reference [List Nexus](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-nexus.md)
- Public reference [List Nexus By Country](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-nexus-by-country.md)
- Public reference [List Nexus By Country And Region](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-nexus-by-country-and-region.md)
- Public reference [List Nexus By Address](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-nexus-by-address.md)
- Public reference [List Nexus By Form Code](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-nexus-by-form-code.md)
- Public reference [List Nexus By Tax Type Group](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-nexus-by-tax-type-group.md)
- Public reference [List Nexus Tax Type Groups](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-nexus-tax-type-groups.md)
- Public reference [List Notice Customer Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-customer-types.md)
- Public reference [List Notice Filingtypes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-filingtypes.md)
- Public reference [List Notice Priorities](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-priorities.md)
- Public reference [List Notice Reasons](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-reasons.md)
- Public reference [List Notice Responsibilities](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-responsibilities.md)
- Public reference [List Notice Root Causes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-root-causes.md)
- Public reference [List Notice Statuses](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-statuses.md)
- Public reference [List Notice Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-notice-types.md)
- Public reference [List Parameters](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-parameters.md)
- Public reference [List Parameters By Item](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-parameters-by-item.md)
- Public reference [List Parameters Usage](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-parameters-usage.md)
- Public reference [List Postal Codes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-postal-codes.md)
- Public reference [List Preferred Programs](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-preferred-programs.md)
- Public reference [List Product Classification Systems](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-product-classification-systems.md)
- Public reference [List Product Classification Systems By Company](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-product-classification-systems-by-company.md)
- Public reference [List Regions](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-regions.md)
- Public reference [List Returns Parameters Usage](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-returns-parameters-usage.md)
- Public reference [List Tags](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tags.md)
- Public reference [List Tax Authorities](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-authorities.md)
- Public reference [List Tax Authority Forms](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-authority-forms.md)
- Public reference [List Tax Authority Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-authority-types.md)
- Public reference [List Tax Codes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-codes.md)
- Public reference [List Tax Code Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-code-types.md)
- Public reference [List Tax Forms](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-forms.md)
- Public reference [List Tax Sub Types](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-sub-types.md)
- Public reference [List Tax Sub Types By Jurisdiction And Region](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-sub-types-by-jurisdiction-and-region.md)
- Public reference [List Tax Sub Types By Country And Tax Type](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-sub-types-by-country-and-tax-type.md)
- Public reference [List Tax Type Groups](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-type-groups.md)
- Public reference [List Tax Types By Nexus And Country](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-types-by-nexus-and-country.md)
- Public reference [List All Unit Of Basis](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-all-unit-of-basis.md)
- Public reference [List Unit Of Basis By Country And Tax Type And Tax Sub Type And Rate Type](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-unit-of-basis-by-country-and-tax-type-and-tax-sub-type-and-rate-type.md)
- Public reference [List Unit Of Measurement](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-unit-of-measurement.md)
- Public reference [Resolve Form Type Task](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/resolve-form-type-task.md)
- Public reference [Get Premium Classification](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-premium-classification.md)
- Public reference [List Import Restrictions](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-import-restrictions.md)
- Public reference [Get Item Tax Code Recommendations](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-item-tax-code-recommendations.md)
- Public reference [Get HS Code Classification SLA](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-hs-code-classification-sla.md)
- Public reference [Get Batch Tax Code Recommendations](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-batch-tax-code-recommendations.md)
- Public reference [List Recommended Parameter By Company Id And Item Id](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-recommended-parameter-by-company-id-and-item-id.md)
- Public reference [Query Jurisdiction Overrides](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/query-jurisdiction-overrides.md)
- Public reference [List Tax Codes By Company](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-tax-codes-by-company.md)
- Public reference [Get Tax Code](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-tax-code.md)
- Public reference [Query Tax Codes](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/query-tax-codes.md)
- Public reference [Get VAT Rates By Country](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/get-vat-rates-by-country.md)
- Public reference [Tax Rates By Postal Code](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/tax-rates-by-postal-code.md)
- Public reference [List Country Coefficients](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/list-country-coefficients.md)
- Public reference [Ping](https://avalara.ferndocs.com/api-reference/calculations/ava-tax/public-reference/ping.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://avalara.ferndocs.com/openapi.json)
- [OpenAPI YAML](https://avalara.ferndocs.com/openapi.yaml)