get https://content.cert.ceretax.net/taxrates/download
This API endpoint offers a convenient way to download a file containing tax rates by state and postal code. By making a GET request to this endpoint, you can retrieve a downloadable file that provides comprehensive tax rate information organized by state and postal code combinations.
A separate CereTax usage plan is required to access the Content API. If you would like access to the Content API, please reach out to [email protected].