California Sales and Use Tax Rate SOAP API

The Tax Rate API is used by Find a Sales and Use Tax rate and other web applications to determine the tax rate or rates. 

When a California address or coordinate is sent in a request to the API, this returns the tax rate and other codes, based on a GIS map in a response.

The API does not validate addresses. Always enter a valid address or use an address validator before sending the address to the API.  

https://services.gis.boe.ca.gov/api/taxrates/Rates.svc

See also REST API https://services.maps.cdtfa.ca.gov/

Terms of Us https://www.cdtfa.ca.gov/use.htm