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Testing in the Sandbox #

Sandbox environment overview #

The Sandbox environment is a complete replica of the Dwolla production environment, supporting all of the same API endpoints. Applications should be tested against the Sandbox environment before being used in production.

Differences from production environment #

  • The Sandbox contains only test data and is completely separate from your production account.
  • All API endpoints have a base URL of instead of
  • Actual money is not sent or received as part of test transactions.

Transfer behavior in the Sandbox #

Unlike transfers that are sourced from a Dwolla balance, which are processed instantaneously, bank-sourced transfers exist in the pending state for a few business days until they are processed, failed, or cancelled.

The Sandbox environment does not replicate any ACH processes, so a pending transfer will not clear or fail automatically after a few business days as it would in production. It will simply remain in the pending state indefinitely. Reference the testing transfers section for more information on how to simulate bank transfer processing in the Sandbox environment.

Sandbox account setup #

To set up your Sandbox account, all you will need is a valid email address. Once you agree to the Dwolla Developer Terms and Service, you will receive an email asking to verify your email address.

After email verification, your Sandbox account will be created and you'll be redirected to our Sandbox Dashboard at Here you can view your API key and secret and generate an OAuth access token. Dwolla will also create an application for your account, associate a funding source named 'Superhero Savings Bank', and add $5000 to the account balance for testing.

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Use sandbox environment to test API requests.
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Financial institutions play an important role in our network.

All funds transfers made using the Dwolla Platform are performed by a financial institution partner, and any funds held in a Dwolla Balance are held by a financial institution partner. Learn more about our financial institution partners.