The bail bond is the most popular form of bail. If the individual does not have enough money for the cash bail, he may use a bond company. In this case, the bond company will pay the bail, but charges a Premium for their service, usually 10%. The bail bond agency will also require collateral from a co-signer. Generally, the co-signer knows the defendant and is guaranteeing appearance to the court. The co-signer is reliable for paying the full amount back to the bail bond agency if the defendant happens to skip town and does not appear in court.