This Application Programming Interface (API) document defines the structures and methods that are used in the CCH SureTax tax rating and calculation system. The CCH SureTax system can be used for energy (utilities) services on a “real-time” basis by submitting web request/response messages via Internet services using HTTPS POST or SOAP.
For web requests submitted via HTTPS POST, the data should be formatted using either JSON or XML format. The response format type is the same as the request format.
For requests submitted via SOAP, responses are provided in same XML format as the request.
Please note that the current implementation is synchronous, where a response is provided for each request submitted.
Each request can contain one-to-many items (transaction records) which can correlate multiple customers and/or invoices.
Should you have any questions about this API documentation, please contact the CCH Support team at 800-739-9998, Chat at http://support.cch.com/chat/corpsystemsalestax, or raise a web ticket at https://support.cch.com/ticket/