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.

Guides

Authentication

Learn how to authenticate your API requests with Zamp.

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Pagination

Understand how to work with paginated responses.

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Tax Codes

Find the right taxability rules to apply to your products.

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Errors

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

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Resources

Calculations

Learn about calculating tax liability on transactions in real-time.

Transactions

Learn about accessing and persisting transactions for filing.

Addresses

Learn about validating addresses for more accurate tax calculations.

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