Indiana Invoice is an official document issued by the State of Indiana that outlines taxable goods and services, the total amount due, and payment information. It is used by businesses to track the sale of goods and services, and the payment of taxes due to the state. It is also used to record sales and use taxes for the State of Indiana. There are two types of Indiana Invoice: a Sales Tax Invoice and a Use Tax Invoice. The Sales Tax Invoice is used to record taxable sales to customers, and the Use Tax Invoice is used to record taxable purchases from vendors. Both invoices must be completed accurately and submitted to the Indiana Department of Revenue prior to the due date.