The Michigan 3891 form is an essential tool for businesses seeking to recover prepaid sales tax on gasoline. This form, issued by the Michigan Department of Treasury, allows eligible businesses to request a refund for any overpayment of sales tax. It is important to note that filing this form is voluntary, providing businesses with the option to reclaim funds that may have been mistakenly paid. The form requires basic information such as the business name, Federal Employee Identification Number (FEIN), and contact details. Additionally, businesses must detail the tax reporting period and the amount overpaid, culminating in a total overpayment figure. To ensure accuracy and compliance, the form includes a certification section where the authorized representative must attest to the truthfulness of the information provided. Once completed, the form can be submitted via fax or mail to the appropriate department. For any inquiries, businesses can reach out to the Customer Contact Division for assistance. Understanding the Michigan 3891 form can help businesses navigate the refund process effectively, allowing them to reclaim funds and maintain financial health.