The benefit estimate calculator provides an unofficial estimate of the monthly benefit you may receive at retirement. If you are a member of one of the defined benefit plans PEBA administers, you can access the calculator through Member Access.   The calculator provides an estimate only and is subject to change. The estimate does not include credit for unused annual or sick leave and is not a guarantee that you will receive any benefit calculated by its use. You may also request a retirement benefit estimate by calling our Customer Service department.