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Rate Limits #

Dwolla imposes a rate limit for any applications that make requests to our API. Currently, we have the following rate limit defined:

  • Volume-based: If the rate limit is reached for an endpoint, subsequent requests will result in an HTTP 429 Too Many Requests status code, which will persist for 5 minutes. At this time, these thresholds are defined as outside the range of what we consider normal API usage.

Dwolla recommends building a mechanism into your application to handle 429 Too Many Requests responses, which would retry the request following an exponential backoff schedule to reduce request volume, and utilizes idempotency keys, where applicable. This ensures actions only perform once and prevents creation of duplicate records.

If you believe that your application will require a high rate of API calls, please contact for further assistance.

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