A: Bail is the amount of money paid to the jail for the release of someone arrested or detained. It has to be paid to be released. A bond is a promise of money but may not necessarily be money paid instead, a promise to pay if the arrested person bailed out does not show up to court. Bail can be paid directly by the arrested, bond is normally paid by a bonding company. The bonding company is responsible for making sure their bailed client shows up in court and is on the hook for the amount of the bond.