TrustFile API


How does the API work?

The API extracts sales/refund transactions from any platform and processes it into prepared / file-able sales tax returns.

Get started learning about and using this API


Check out the documentation

The Core API allows a developer to interact with transactions in TrustFile.

The Provisioning API allows a partner to provide signup and provisioning to mutual clients.


Sign up for the service to get an API key

To access the Avalara TrustFile service and obtain an API key, contact your Avalara account manager or email us please.