RTBA Online is a safe and secure system that allows you to complete bond transactions online in a quick and convenient way. Enter your bond details to: View your bond; Amend bond details; Arrange a bond refund; Transfer a bond.Obtain and retrieve I bond Application Forms to streamline your application submission procedure. Pick from a selection of different ready-made documents. Posting and Bonding Forms. Here are a variety of posting and bonding forms you may need to review and fill out.