Wisconsin AO 213 Form — Attorney Billing Information is a document used by attorneys in Wisconsin to document their services and fees. It is required by the Wisconsin State Bar Association for attorneys to submit for payment of their services. The form consists of four sections: Client Information, Services Rendered, Billable Time, and Amount Due. It is important for attorneys to accurately and thoroughly complete the form in order to receive timely payment. There are different types of Wisconsin AO 213 Form — Attorney Billing Information, including: Standard Form, Private Retainer Form, Limited Representation Form, and Multi-Party Representation Form.