The Wyoming Verified Claim Form for Overpayment on an Annual Report is a form that businesses must complete and submit to the Wyoming Department of Revenue in order to request that an overpayment of taxes on their Annual Report be refunded or credited to an upcoming report. This form is available for both corporate and individual taxpayers. There are two types of Wyoming Verified Claim Form: Form WY/C-20, which is used to request a refund of an overpayment, and Form WY/C-21, which is used to request a credit for an overpayment. Both forms must be completed and signed by the taxpayer and the appropriate authorized representative. The form must include detailed information about the taxpayer, the overpayment, and the annual report for which the overpayment was made. The form must also include supporting documentation of the overpayment, such as a copy of the annual report or a calculation of the overpayment. Once completed, the form must be submitted to the Wyoming Department of Revenue for processing.