TaxJar Sales Tax API

openapi: 3.0.3
info:
  title: TaxJar Sales Tax API
  description: >-
    REST API for real-time sales tax calculation, rooftop-level rate lookups,
    tax category listing, transaction management (orders and refunds), customer
    exemption management, nexus region tracking, address validation, and VAT
    validation. Supports token-based authentication via Authorization header.
    TaxJar is a Stripe company providing sub-20ms response times and 99.999%
    historical uptime.
  version: '2.0'
  contact:
    name: TaxJar Developer Support
    url: https://support.taxjar.com/category/233-taxjar-api
  termsOfService: https://www.taxjar.com/terms/
  x-api-id: taxjar-sales-tax
servers:
  - url: https://api.taxjar.com/v2
    description: Production
  - url: https://api.sandbox.taxjar.com/v2
    description: Sandbox
security:
  - bearerAuth: []
tags:
  - name: Categories
    description: Product tax categories
  - name: Taxes
    description: Sales tax calculation
  - name: Rates
    description: Sales tax rate lookups
  - name: Transactions - Orders
    description: Order transaction management
  - name: Transactions - Refunds
    description: Refund transaction management
  - name: Customers
    description: Customer exemption management
  - name: Nexus
    description: Nexus region tracking
  - name: Validations
    description: Address and VAT validation
  - name: Summary Rates
    description: Summarized sales tax rates by region
paths:
  /categories:
    get:
      operationId: listCategories
      summary: List tax categories
      description: >-
        Returns all available product tax categories with associated product tax
        codes that can be used to identify products subject to special tax rates.
      tags:
        - Categories
      responses:
        '200':
          description: List of tax categories
          content:
            application/json:
              schema:
                type: object
                properties:
                  categories:
                    type: array
                    items:
                      $ref: '#/components/schemas/Category'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /taxes:
    post:
      operationId: calculateTaxForOrder
      summary: Calculate sales tax for an order
      description: >-
        Calculates the sales tax for a given order based on origin and
        destination addresses, line items, and other order attributes.
        Returns the amount of sales tax to collect along with a breakdown
        by jurisdiction.
      tags:
        - Taxes
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TaxRequest'
      responses:
        '200':
          description: Tax calculation result
          content:
            application/json:
              schema:
                type: object
                properties:
                  tax:
                    $ref: '#/components/schemas/Tax'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /rates/{zip}:
    get:
      operationId: getRatesForLocation
      summary: Show tax rates for a location
      description: >-
        Returns the sales tax rates for a given location by postal code.
        Supports US and international locations. For US lookups, returns
        state, county, city, and special district rates.
      tags:
        - Rates
      parameters:
        - name: zip
          in: path
          required: true
          description: Postal code for the location
          schema:
            type: string
          example: '90002'
        - name: country
          in: query
          description: Two-letter ISO country code
          schema:
            type: string
          example: US
        - name: state
          in: query
          description: Two-letter state/province code
          schema:
            type: string
        - name: city
          in: query
          description: City name
          schema:
            type: string
        - name: street
          in: query
          description: Street address
          schema:
            type: string
      responses:
        '200':
          description: Tax rates for the location
          content:
            application/json:
              schema:
                type: object
                properties:
                  rate:
                    $ref: '#/components/schemas/Rate'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /transactions/orders:
    get:
      operationId: listOrders
      summary: List order transactions
      description: >-
        Returns a list of order transaction IDs for the authenticated account.
        Supports filtering by date range and provider.
      tags:
        - Transactions - Orders
      parameters:
        - name: transaction_date
          in: query
          description: Filter orders by exact transaction date (YYYY-MM-DD)
          schema:
            type: string
            format: date
        - name: from_transaction_date
          in: query
          description: Start date filter (YYYY-MM-DD)
          schema:
            type: string
            format: date
        - name: to_transaction_date
          in: query
          description: End date filter (YYYY-MM-DD)
          schema:
            type: string
            format: date
        - name: provider
          in: query
          description: Filter by provider (e.g. api, shopify, woocommerce)
          schema:
            type: string
      responses:
        '200':
          description: List of order transaction IDs
          content:
            application/json:
              schema:
                type: object
                properties:
                  orders:
                    type: array
                    items:
                      type: string
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createOrder
      summary: Create an order transaction
      description: >-
        Creates a new order transaction for sales tax reporting and AutoFile
        purposes. Use this to record completed sales.
      tags:
        - Transactions - Orders
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/OrderRequest'
      responses:
        '201':
          description: Order transaction created
          content:
            application/json:
              schema:
                type: object
                properties:
                  order:
                    $ref: '#/components/schemas/Order'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /transactions/orders/{transaction_id}:
    get:
      operationId: showOrder
      summary: Show an order transaction
      description: Returns a single order transaction by transaction ID.
      tags:
        - Transactions - Orders
      parameters:
        - name: transaction_id
          in: path
          required: true
          description: Unique identifier for the order transaction
          schema:
            type: string
        - name: provider
          in: query
          description: Provider for the transaction (e.g. api, shopify)
          schema:
            type: string
      responses:
        '200':
          description: Order transaction details
          content:
            application/json:
              schema:
                type: object
                properties:
                  order:
                    $ref: '#/components/schemas/Order'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateOrder
      summary: Update an order transaction
      description: Updates an existing order transaction by transaction ID.
      tags:
        - Transactions - Orders
      parameters:
        - name: transaction_id
          in: path
          required: true
          description: Unique identifier for the order transaction
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/OrderRequest'
      responses:
        '200':
          description: Updated order transaction
          content:
            application/json:
              schema:
                type: object
                properties:
                  order:
                    $ref: '#/components/schemas/Order'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteOrder
      summary: Delete an order transaction
      description: Deletes an existing order transaction by transaction ID.
      tags:
        - Transactions - Orders
      parameters:
        - name: transaction_id
          in: path
          required: true
          description: Unique identifier for the order transaction
          schema:
            type: string
        - name: provider
          in: query
          description: Provider for the transaction
          schema:
            type: string
      responses:
        '200':
          description: Deleted order transaction
          content:
            application/json:
              schema:
                type: object
                properties:
                  order:
                    $ref: '#/components/schemas/Order'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /transactions/refunds:
    get:
      operationId: listRefunds
      summary: List refund transactions
      description: >-
        Returns a list of refund transaction IDs for the authenticated account.
        Supports filtering by date range and provider.
      tags:
        - Transactions - Refunds
      parameters:
        - name: transaction_date
          in: query
          description: Filter refunds by exact transaction date (YYYY-MM-DD)
          schema:
            type: string
            format: date
        - name: from_transaction_date
          in: query
          description: Start date filter (YYYY-MM-DD)
          schema:
            type: string
            format: date
        - name: to_transaction_date
          in: query
          description: End date filter (YYYY-MM-DD)
          schema:
            type: string
            format: date
        - name: provider
          in: query
          description: Filter by provider
          schema:
            type: string
      responses:
        '200':
          description: List of refund transaction IDs
          content:
            application/json:
              schema:
                type: object
                properties:
                  refunds:
                    type: array
                    items:
                      type: string
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createRefund
      summary: Create a refund transaction
      description: Creates a new refund transaction linked to an order transaction.
      tags:
        - Transactions - Refunds
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RefundRequest'
      responses:
        '201':
          description: Refund transaction created
          content:
            application/json:
              schema:
                type: object
                properties:
                  refund:
                    $ref: '#/components/schemas/Refund'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /transactions/refunds/{transaction_id}:
    get:
      operationId: showRefund
      summary: Show a refund transaction
      description: Returns a single refund transaction by transaction ID.
      tags:
        - Transactions - Refunds
      parameters:
        - name: transaction_id
          in: path
          required: true
          description: Unique identifier for the refund transaction
          schema:
            type: string
        - name: provider
          in: query
          description: Provider for the transaction
          schema:
            type: string
      responses:
        '200':
          description: Refund transaction details
          content:
            application/json:
              schema:
                type: object
                properties:
                  refund:
                    $ref: '#/components/schemas/Refund'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateRefund
      summary: Update a refund transaction
      description: Updates an existing refund transaction by transaction ID.
      tags:
        - Transactions - Refunds
      parameters:
        - name: transaction_id
          in: path
          required: true
          description: Unique identifier for the refund transaction
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RefundRequest'
      responses:
        '200':
          description: Updated refund transaction
          content:
            application/json:
              schema:
                type: object
                properties:
                  refund:
                    $ref: '#/components/schemas/Refund'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteRefund
      summary: Delete a refund transaction
      description: Deletes an existing refund transaction by transaction ID.
      tags:
        - Transactions - Refunds
      parameters:
        - name: transaction_id
          in: path
          required: true
          description: Unique identifier for the refund transaction
          schema:
            type: string
        - name: provider
          in: query
          description: Provider for the transaction
          schema:
            type: string
      responses:
        '200':
          description: Deleted refund transaction
          content:
            application/json:
              schema:
                type: object
                properties:
                  refund:
                    $ref: '#/components/schemas/Refund'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /customers:
    get:
      operationId: listCustomers
      summary: List customers
      description: >-
        Returns a list of customer IDs for exempt customers associated with the
        authenticated account.
      tags:
        - Customers
      responses:
        '200':
          description: List of customer IDs
          content:
            application/json:
              schema:
                type: object
                properties:
                  customers:
                    type: array
                    items:
                      type: string
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createCustomer
      summary: Create a customer
      description: >-
        Creates a new exempt customer record for sales tax exemption management.
      tags:
        - Customers
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomerRequest'
      responses:
        '201':
          description: Customer created
          content:
            application/json:
              schema:
                type: object
                properties:
                  customer:
                    $ref: '#/components/schemas/Customer'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /customers/{customer_id}:
    get:
      operationId: showCustomer
      summary: Show a customer
      description: Returns a single exempt customer by customer ID.
      tags:
        - Customers
      parameters:
        - name: customer_id
          in: path
          required: true
          description: Unique identifier for the customer
          schema:
            type: string
      responses:
        '200':
          description: Customer details
          content:
            application/json:
              schema:
                type: object
                properties:
                  customer:
                    $ref: '#/components/schemas/Customer'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateCustomer
      summary: Update a customer
      description: Updates an existing exempt customer record.
      tags:
        - Customers
      parameters:
        - name: customer_id
          in: path
          required: true
          description: Unique identifier for the customer
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomerRequest'
      responses:
        '200':
          description: Updated customer
          content:
            application/json:
              schema:
                type: object
                properties:
                  customer:
                    $ref: '#/components/schemas/Customer'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteCustomer
      summary: Delete a customer
      description: Deletes an existing exempt customer record.
      tags:
        - Customers
      parameters:
        - name: customer_id
          in: path
          required: true
          description: Unique identifier for the customer
          schema:
            type: string
      responses:
        '200':
          description: Deleted customer
          content:
            application/json:
              schema:
                type: object
                properties:
                  customer:
                    $ref: '#/components/schemas/Customer'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /nexus/regions:
    get:
      operationId: listNexusRegions
      summary: List nexus regions
      description: >-
        Returns a list of nexus regions (states/countries where you have tax
        nexus) for the authenticated account.
      tags:
        - Nexus
      responses:
        '200':
          description: List of nexus regions
          content:
            application/json:
              schema:
                type: object
                properties:
                  regions:
                    type: array
                    items:
                      $ref: '#/components/schemas/NexusRegion'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /addresses/validate:
    post:
      operationId: validateAddress
      summary: Validate an address
      description: >-
        Validates a US address and returns standardized address components.
        Returns up to 4 suggestions for an incomplete address.
      tags:
        - Validations
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AddressRequest'
      responses:
        '200':
          description: Validated address suggestions
          content:
            application/json:
              schema:
                type: object
                properties:
                  addresses:
                    type: array
                    items:
                      $ref: '#/components/schemas/Address'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /validation:
    get:
      operationId: validateVAT
      summary: Validate a VAT number
      description: >-
        Validates a VAT identification number using the VIES service and
        returns validity status along with registered business information.
      tags:
        - Validations
      parameters:
        - name: vat
          in: query
          required: true
          description: VAT number to validate (e.g. FR40303265045)
          schema:
            type: string
          example: FR40303265045
      responses:
        '200':
          description: VAT validation result
          content:
            application/json:
              schema:
                type: object
                properties:
                  validation:
                    $ref: '#/components/schemas/Validation'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /summary_rates:
    get:
      operationId: listSummaryRates
      summary: Summarize tax rates for all regions
      description: >-
        Returns a summarized list of expected sales tax rates for a given
        region. This is useful for showing customers an estimated tax rate
        before checkout.
      tags:
        - Summary Rates
      responses:
        '200':
          description: Summary rates by region
          content:
            application/json:
              schema:
                type: object
                properties:
                  summary_rates:
                    type: array
                    items:
                      $ref: '#/components/schemas/SummaryRate'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        Use your TaxJar API token. Format: "Bearer [token]" or
        "Token token=[token]"
  responses:
    BadRequest:
      description: Bad request - invalid parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Unauthorized - invalid or missing API token
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: Not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    UnprocessableEntity:
      description: Unprocessable entity - validation error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error type
        detail:
          type: string
          description: Human-readable error detail
        status:
          type: integer
          description: HTTP status code
    Category:
      type: object
      properties:
        name:
          type: string
          description: Name of the tax category
          example: Clothing
        product_tax_code:
          type: string
          description: Product tax code for use in tax calculations
          example: 20010
        description:
          type: string
          description: Description of the tax category
          example: All clothing products
    Rate:
      type: object
      properties:
        zip:
          type: string
          description: Postal code
          example: '90002'
        state:
          type: string
          description: Two-letter state code
          example: CA
        state_rate:
          type: number
          format: float
          description: State sales tax rate
          example: 0.065
        county:
          type: string
          description: County name
          example: LOS ANGELES
        county_rate:
          type: number
          format: float
          description: County sales tax rate
          example: 0.01
        city:
          type: string
          description: City name
          example: WATTS
        city_rate:
          type: number
          format: float
          description: City sales tax rate
          example: 0.0
        combined_district_rate:
          type: number
          format: float
          description: Combined special district rate
          example: 0.025
        combined_rate:
          type: number
          format: float
          description: Total combined sales tax rate
          example: 0.1
        freight_taxable:
          type: boolean
          description: Whether shipping is taxable in this location
          example: false
        country:
          type: string
          description: Two-letter country code (international)
        name:
          type: string
          description: Region name (international)
        country_rate:
          type: number
          format: float
          description: Country tax rate (Australia and SST states)
        standard_rate:
          type: number
          format: float
          description: Standard VAT rate (EU)
        reduced_rate:
          type: number
          format: float
          description: Reduced VAT rate (EU)
        super_reduced_rate:
          type: number
          format: float
          description: Super-reduced VAT rate (EU)
        parking_rate:
          type: number
          format: float
          description: Parking VAT rate (EU)
        distance_sale_threshold:
          type: number
          format: float
          description: Distance sale threshold (EU)
    TaxRequest:
      type: object
      required:
        - to_country
        - to_zip
        - to_state
        - amount
        - shipping
      properties:
        from_country:
          type: string
          description: Two-letter ISO country code of origin
          example: US
        from_zip:
          type: string
          description: Postal code of origin
          example: '94025'
        from_state:
          type: string
          description: Two-letter state code of origin
          example: CA
        from_city:
          type: string
          description: City of origin
          example: Menlo Park
        from_street:
          type: string
          description: Street address of origin
        to_country:
          type: string
          description: Two-letter ISO country code of destination
          example: US
        to_zip:
          type: string
          description: Postal code of destination
          example: '90002'
        to_state:
          type: string
          description: Two-letter state code of destination
          example: CA
        to_city:
          type: string
          description: City of destination
          example: Los Angeles
        to_street:
          type: string
          description: Street address of destination
        amount:
          type: number
          format: float
          description: Total amount of the order (excluding shipping)
          example: 15.0
        shipping:
          type: number
          format: float
          description: Total shipping cost
          example: 1.5
        customer_id:
          type: string
          description: Unique identifier of the customer for exemption lookup
        exemption_type:
          type: string
          description: Type of exemption (wholesale, government, other, non_exempt)
          enum:
            - wholesale
            - government
            - other
            - non_exempt
        line_items:
          type: array
          description: List of line items in the order
          items:
            $ref: '#/components/schemas/LineItemRequest'
    Tax:
      type: object
      properties:
        order_total_amount:
          type: number
          format: float
          description: Total order amount
          example: 16.5
        shipping:
          type: number
          format: float
          description: Shipping amount
          example: 1.5
        taxable_amount:
          type: number
          format: float
          description: Amount subject to tax
          example: 15.0
        amount_to_collect:
          type: number
          format: float
          description: Total tax amount to collect
          example: 1.35
        rate:
          type: number
          format: float
          description: Overall tax rate
          example: 0.09
        has_nexus:
          type: boolean
          description: Whether seller has nexus in the destination
          example: true
        freight_taxable:
          type: boolean
          description: Whether shipping is taxable
          example: false
        tax_source:
          type: string
          description: Tax sourcing rule applied (origin or destination)
          example: destination
        exemption_type:
          type: string
          description: Exemption type applied
        jurisdictions:
          $ref: '#/components/schemas/Jurisdictions'
        breakdown:
          $ref: '#/components/schemas/Breakdown'
    Jurisdictions:
      type: object
      properties:
        country:
          type: string
          description: Country code
          example: US
        state:
          type: string
          description: State code
          example: CA
        county:
          type: string
          description: County name
          example: LOS ANGELES
        city:
          type: string
          description: City name
          example: LOS ANGELES
    Breakdown:
      type: object
      properties:
        taxable_amount:
          type: number
          format: float
        tax_collectable:
          type: number
          format: float
        combined_tax_rate:
          type: number
          format: float
        state_taxable_amount:
          type: number
          format: float
        state_tax_rate:
          type: number
          format: float
        state_tax_collectable:
          type: number
          format: float
        county_taxable_amount:
          type: number
          format: float
        county_tax_rate:
          type: number
          format: float
        county_tax_collectable:
          type: number
          format: float
        city_taxable_amount:
          type: number
          format: float
        city_tax_rate:
          type: number
          format: float
        city_tax_collectable:
          type: number
          format: float
        special_district_taxable_amount:
          type: number
          format: float
        special_tax_rate:
          type: number
          format: float
        special_district_tax_collectable:
          type: number
          format: float
        line_items:
          type: array
          items:
            $ref: '#/components/schemas/BreakdownLineItem'
    BreakdownLineItem:
      type: object
      properties:
        id:
          type: string
        taxable_amount:
          type: number
          format: float
        tax_collectable:
          type: number
          format: float
        combined_tax_rate:
          type: number
          format: float
        state_taxable_amount:
          type: number
          format: float
        state_sales_tax_rate:
          type: number
          format: float
        state_amount:
          type: number
          format: float
        county_taxable_amount:
          type: number
          form

# --- truncated at 32 KB (46 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/taxjar/refs/heads/main/openapi/taxjar-sales-tax-openapi.yml