Surety is the act of a person or corporation making themselves liable for another's debts, defaults or obligations, etc.. In other words, it is acting as a co-signer or guarantor for a specific deposit, performance or contract. A performance bond is a non-cancelable commitment issued by the surety to the owner of the project (obligee) guaranteeing that the contractor will complete the referenced contract within its set terms and conditions. In other words, the surety is in effect co-signing the contract. A payment bond guarantees that all sub contractors, labor and material suppliers will be paid leaving the project lien free. required to post a bond in case of any losses incurred as a result of their work or failure to complete work on the contract for the project. The bond serves as an insurance policy to the property owner or other party who may incur such loss.