The posting of a bail bond is a contractual undertaking guaranteed by a bail agent and an individual posting bail. This bail agent provides a guarantee to the court that the defendant will appear in court each and every time he or she is summoned by the judge.

A relative or a family friend contacts the bail agent, before the defendant is released, to arrange for the posting of a bail. The bail agent gets a percentage of the amount decided by the judge for that particular defendant. By signing the agreement with the bail agent regarding posting the bail, the defendant or the co-signer, who might be a relative or a family friend, must provide a guarantee that the bail amount will definitely be paid in full if the defendant fails to appear at the summons. After an agreement is signed, the bail agent posts a bond for the amount of the bail, to guarantee the defendant