# Sales Tax Groups Sales Tax Groups is used to view and edit all existing sales tax groups that you have entered. Sales Tax Groups combines multiple sales taxes into a tax group and enables you to apply them to an invoice, bill or credit all at one time. You can also setup a default sales tax group for your customers and vendors that will default during transaction entry. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://infinisuite.gitbook.io/erp/setup/sales-tax-groups.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.