API Documentation

Use the Zamp API to calculate taxes on transactions and commit them for filing.

Getting started

Your account is pre-configured to calculate taxes based your specific sales tax situation. To get a Zamp API token, please send us a note here.

Learn how to authenticate your API requests with Zamp.

Understand how to work with paginated responses.

Find the right taxability rules to apply to your products.

Read about the different types of errors returned by the API.

Learn about how to calculate your tax liability on transactions in real-time.

Learn about the transaction model and how to create, retrieve, update, delete, and list transactions.