Welcome to OpenZac

OpenZac is a free and open database of certain public data that is utilized in ZacTax. Please note that this is designed for our needs and may not be suitable for yours. We're unlikely to consider feature requests. But if it works for you, feel free!

Though the API is functional, this site is still a work-in-progress. Bear with us as we get it up and running.

Getting started

To get started, create an account or log in and then create an API token.

Guides

Authentication

Learn how to authenticate your API requests.

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Pagination

Understand how to work with paginated responses.

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Errors

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

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Explore

Dig around in the data to become more familiar with it.

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Resources

Jurisdictions

Learn about the jurisdiction model.

California

Learn how to fetch California sales tax data.

Texas

Learn how to fetch Texas sales tax data.