The penalty for the late filing of reimbursed mileage can vary depending on the specific policies and regulations of the organization or company providing the reimbursement. In some cases, there may be a specific timeline outlined for submitting mileage claims, and failure to meet this deadline could result in the loss of reimbursement for that particular period. Additionally, some organizations may have policies that penalize late filings by reducing the amount of reimbursement or imposing a fine. It is important to refer to the specific guidelines and policies of your employer or organization to determine the penalties for late filing of reimbursed mileage.