specification: API Commons Rate Limits
specificationVersion: '0.1'
provider: TaxJar
providerId: taxjar
created: '2026-06-12'
modified: '2026-06-12'
url: https://support.taxjar.com/article/639-what-is-my-rate-limit-for-the-taxjar-api
retryAfter:
  header: Retry-After
  description: >-
    TaxJar support documentation does not explicitly document a Retry-After
    header but recommends contacting support for higher limits. Standard HTTP
    429 response indicates rate limit exceeded; clients should implement
    exponential backoff.
throttled:
  httpStatus: 429
  description: >-
    HTTP 429 Too Many Requests is returned when the API call rate limit is
    exceeded. Clients should back off and retry after a short delay.
limits:
  - scope: account
    plan: Professional
    metric: api_calls
    limit: 10000
    timeFrame: minute
    description: >-
      Professional plan subscribers are allowed up to 10,000 API calls per
      minute. This limit applies account-wide across all API endpoints.
    contactForHigher: true
    contactEmail: support@taxjar.com
strategies:
  - name: Restrict by Nexus
    description: >-
      Restrict tax calculations to jurisdictions where you have established
      sales tax obligations (nexus) rather than calculating for all orders.
  - name: Cache Responses
    description: >-
      Cache previous API responses for identical orders to reduce redundant
      calls. Reuse cached calculations when order details have not changed.
  - name: Summarized Rates Fallback
    description: >-
      Use the summarized rates endpoint as a backup method for non-real-time
      scenarios where exact rooftop accuracy is not required.
endpoints:
  - name: Calculate Sales Tax
    path: /v2/taxes
    method: POST
    description: Real-time sales tax calculation for an order
  - name: List Tax Rates
    path: /v2/rates/{location}
    method: GET
    description: Tax rate lookup by location (address, zip code)
  - name: List Tax Categories
    path: /v2/categories
    method: GET
    description: List all product tax categories
  - name: Create Transaction (Order)
    path: /v2/transactions/orders
    method: POST
    description: Record a completed order transaction
  - name: Summarized Tax Rates
    path: /v2/summary_rates
    method: GET
    description: Summarized tax rates by region (useful for caching)