A Vermont Certificate of Service is a legal document used to prove that someone was served with notice of a pending court action. It is typically issued by a sheriff's department in the state of Vermont. There are two types of Vermont Certificates of Service: in-person service and substituted service. In-person service requires that the sheriff or a deputy serve the notice to the defendant in person. Substituted service allows for service of notice to be made upon the defendant by another person, such as a family member, friend, or coworker. The Certificate of Service must be completed by the person who served the notice and must be filed with the court. The Certificate of Service serves as proof that the notice was properly served.