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Avalara Definitions API

Query tax content definitions, rates, and jurisdictions

Avalara Definitions API is one of 73 APIs that Avalara publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include Definitions. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an AsyncAPI specification.

This API exposes 73 operations across 73 paths, and defines 2 schemas. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against 3 base URLs: https://rest.avatax.com, https://sandbox-rest.avatax.com, http://{{baseurl}}.

73 operations 73 paths 2 schemas 73 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Servers
https://rest.avatax.com
https://sandbox-rest.avatax.com
http://{{baseurl}}
Authentication
HTTP Basic, HTTP Bearer
Resource Areas
1

Authentication & Security 2

Avalara Definitions API declares 2 security schemes for authenticating requests. It accepts HTTP basic authentication (basicAuth). It accepts HTTP bearer tokens (bearerAuth).

  • basicAuth — Use your AvaTax username/password or accountId/licenseKey as basic auth credentials
  • bearerAuth — OAuth 2.0 bearer token

Paths & Operations 73

Across 73 paths, the API surfaces 73 operations — 73 GET. Each is listed below with its method, path, parameters, and response codes.

Definitions 73

Query tax content definitions, rates, and jurisdictions

GET
/api/v2/definitions/taxcodes
Avalara List All Tax Codes
listTaxCodes 3 params → 200
GET
/api/v2/definitions/nexus/{country}
Avalara List Nexus Options for a Country
listNexusByCountry 1 param → 200
GET
/api/v2/definitions/jurisdictions
Avalara List All Jurisdictions
listJurisdictions 3 params → 200
GET
/api/v2/definitions/countries
Avalara List All Countries Supported by AvaTax
listCountries 3 params → 200
GET
/api/v2/definitions/entityusecodes
Avalara List All Entity Use Codes
listEntityUseCodes 3 params → 200
GET
/api/v2/definitions/crossborder/{country}/{hsCode}/hierarchy
Avalara GetCrossBorderCode
3 params → 200
GET
/api/v2/definitions/filingcalendars/loginverifiers/{form}
Avalara GetLoginVerifierByForm
2 params → 200
GET
/api/v2/definitions/listallmarketplacelocations
Avalara ListAllMarketplaceLocations
1 param → 200
GET
/api/v2/definitions/avafileforms
Avalara ListAvaFileForms
1 param → 200
GET
/api/v2/definitions/certificateattributes
Avalara ListCertificateAttributes
1 param → 200
GET
/api/v2/definitions/certificateexemptreasons
Avalara ListCertificateExemptReasons
1 param → 200
GET
/api/v2/definitions/certificateexposurezones
Avalara ListCertificateExposureZones
1 param → 200
GET
/api/v2/definitions/classification/parametersusage
Avalara ListClassificationParametersUsage
1 param → 200
GET
/api/v2/definitions/communications/transactiontypes/{id}/servicetypes
Avalara ListCommunicationsServiceTypes
2 params → 200
GET
/api/v2/definitions/communications/tspairs
Avalara ListCommunicationsTSPairs
1 param → 200
GET
/api/v2/definitions/communications/transactiontypes
Avalara ListCommunicationsTransactionTypes
1 param → 200
GET
/api/v2/definitions/coverletters
Avalara ListCoverLetters
1 param → 200
GET
/api/v2/definitions/crossborder/{country}/{hsCode}
Avalara ListCrossBorderCodes
3 params → 200
GET
/api/v2/definitions/crossborder/sections
Avalara ListCrossBorderSections
1 param → 200
GET
/api/v2/definitions/currencies
Avalara ListCurrencies
1 param → 200
GET
/api/v2/definitions/filingfrequencies
Avalara ListFilingFrequencies
1 param → 200
GET
/api/v2/definitions/jurisdictionTypes/countries/{country}/taxtypes/{taxTypeId}/taxsubtypes/{taxSubTypeId}
Avalara ListJurisdictionTypesByRateTypeTaxTypeMapping
4 params → 200
GET
/api/v2/definitions/jurisdictionsnearaddress
Avalara ListJurisdictionsByAddress
1 param → 200
GET
/api/v2/definitions/jurisdictions/countries/{country}/taxtypes/{taxTypeId}/taxsubtypes/{taxSubTypeId}
Avalara ListJurisdictionsByRateTypeTaxTypeMapping
4 params → 200
GET
/api/v2/definitions/locationquestions
Avalara ListLocationQuestionsByAddress
1 param → 200
GET
/api/v2/definitions/filingcalendars/loginverifiers
Avalara ListLoginVerifiers
1 param → 200
GET
/api/v2/definitions/marketplacelocations
Avalara ListMarketplaceLocations
1 param → 200
GET
/api/v2/definitions/nexus
Avalara ListNexus
1 param → 200
GET
/api/v2/definitions/nexus/byaddress
Avalara ListNexusByAddress
1 param → 200
GET
/api/v2/definitions/nexus/{country}/{region}
Avalara ListNexusByCountryAndRegion
3 params → 200
GET
/api/v2/definitions/nexus/byform/{formCode}
Avalara ListNexusByFormCode
2 params → 200
GET
/api/v2/definitions/nexus/bytaxtypegroup/{taxTypeGroup}
Avalara ListNexusByTaxTypeGroup
2 params → 200
GET
/api/v2/definitions/nexustaxtypegroups
Avalara ListNexusTaxTypeGroups
1 param → 200
GET
/api/v2/definitions/noticecustomerfundingoptions
Avalara ListNoticeCustomerFundingOptions
1 param → 200
GET
/api/v2/definitions/noticecustomertypes
Avalara ListNoticeCustomerTypes
1 param → 200
GET
/api/v2/definitions/noticefilingtypes
Avalara ListNoticeFilingtypes
1 param → 200
GET
/api/v2/definitions/noticepriorities
Avalara ListNoticePriorities
1 param → 200
GET
/api/v2/definitions/noticereasons
Avalara ListNoticeReasons
1 param → 200
GET
/api/v2/definitions/noticeresponsibilities
Avalara ListNoticeResponsibilities
1 param → 200
GET
/api/v2/definitions/noticerootcauses
Avalara ListNoticeRootCauses
1 param → 200
GET
/api/v2/definitions/noticestatuses
Avalara ListNoticeStatuses
1 param → 200
GET
/api/v2/definitions/noticetypes
Avalara ListNoticeTypes
1 param → 200
GET
/api/v2/definitions/parameters
Avalara ListParameters
1 param → 200
GET
/api/v2/definitions/accounts/{accountId}/parameters
Avalara ListParametersByAccount
2 params → 200
GET
/api/v2/definitions/parameters/byitem/{companyCode}/{itemCode}
Avalara ListParametersByItem
3 params → 200
GET
/api/v2/definitions/parametersusage
Avalara ListParametersUsage
1 param → 200
GET
/api/v2/definitions/permissions
Avalara ListPermissions
1 param → 200
GET
/api/v2/definitions/postalcodes
Avalara ListPostalCodes
1 param → 200
GET
/api/v2/definitions/preferredprograms
Avalara ListPreferredPrograms
1 param → 200
GET
/api/v2/definitions/productclassificationsystems
Avalara ListProductClassificationSystems
1 param → 200
GET
/api/v2/definitions/productclassificationsystems/bycompany/{companyCode}
Avalara ListProductClassificationSystemsByCompany
2 params → 200
GET
/api/v2/definitions/countries/{country}/ratetypes
Avalara ListRateTypesByCountry
2 params → 200
GET
/api/v2/definitions/countries/{country}/taxtypes/{taxTypeId}/taxsubtypes/{taxSubTypeId}/ratetypes
Avalara ListRateTypesByCountryTaxTypeTaxSubType
4 params → 200
GET
/api/v2/definitions/regions
Avalara ListRegions
1 param → 200
GET
/api/v2/definitions/countries/{country}/regions
Avalara ListRegionsByCountry
2 params → 200
GET
/api/v2/definitions/companies/{companyId}/countries/{country}/regions/taxtypes/{taxTypeId}/taxsubtypes/{taxSubTypeId}/rateTypeId/{rateTypeId}/jurisdictionTypeId/{jurisdictionTypeId}
Avalara ListRegionsByCountryAndTaxTypeAndTaxSubTypeAndRateType
7 params → 200
GET
/api/v2/definitions/resourcefiletypes
Avalara ListResourceFileTypes
1 param → 200
GET
/api/v2/definitions/returns/parametersusage
Avalara ListReturnsParametersUsage
1 param → 200
GET
/api/v2/definitions/securityroles
Avalara ListSecurityRoles
1 param → 200
GET
/api/v2/definitions/subscriptiontypes
Avalara ListSubscriptionTypes
1 param → 200
GET
/api/v2/definitions/tags
Avalara ListTags
1 param → 200
GET
/api/v2/definitions/taxauthorities
Avalara ListTaxAuthorities
1 param → 200
GET
/api/v2/definitions/taxauthorityforms
Avalara ListTaxAuthorityForms
1 param → 200
GET
/api/v2/definitions/taxauthoritytypes
Avalara ListTaxAuthorityTypes
1 param → 200
GET
/api/v2/definitions/taxcodetypes
Avalara ListTaxCodeTypes
1 param → 200
GET
/api/v2/definitions/taxforms
Avalara ListTaxForms
1 param → 200
GET
/api/v2/definitions/taxsubtypes
Avalara ListTaxSubTypes
1 param → 200
GET
/api/v2/definitions/taxsubtypes/countries/{country}/taxtypes/{taxTypeId}
Avalara ListTaxSubTypesByCountryAndTaxType
3 params → 200
GET
/api/v2/definitions/taxsubtypes/{jurisdictionCode}/{region}
Avalara ListTaxSubTypesByJurisdictionAndRegion
3 params → 200
GET
/api/v2/definitions/taxtypegroups
Avalara ListTaxTypeGroups
1 param → 200
GET
/api/v2/definitions/taxtypes/countries/{country}
Avalara ListTaxTypesByNexusAndCountry
2 params → 200
GET
/api/v2/definitions/unitofbasis/countries/{country}/taxtypes/{taxTypeId}/taxsubtypes/{taxSubTypeId}
Avalara ListUnitOfBasisByCountryAndTaxTypeAndTaxSubTypeAndRateType
4 params → 200
GET
/api/v2/definitions/unitofmeasurements
Avalara ListUnitOfMeasurement
1 param → 200

Schemas 2

The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are TaxCodeModel (7 properties), FetchResult_TaxCodeModel (2 properties). Each schema is shown below with its type and property counts.

FetchResult_TaxCodeModel
object
2 properties
TaxCodeModel
object
7 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

avalara-definitions-api-openapi.yml Raw ↑

Other APIs Avalara publishes across the network.

AvaTax SOAP API
Avalara Tax Content for Retail Configuration API
Self-Serve Tariff Classification API
License Guidance Order API
Avalara 1099 Forms API
Avalara Accounts API
Avalara Addresses API
Avalara AdvancedRules API
Avalara Attributes API
Avalara Authentication API
Avalara AvaFileForms API
Where this information came from

This is an independent, third-party profile of Avalara Definitions API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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