Public procurement glossary
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Bid bond (Bid guarantee)

Bid bond (Bid guarantee)

A bid bond, also known as a bid guarantee, is a form of financial security that a bidder must often submit when responding to a tender, especially in high-stakes or complex public procurement processes. It usually takes the form of a cash deposit, surety bond, or bank guarantee. The bid bond serves to protect the contracting authority by ensuring that the bidder will not withdraw their proposal or refuse to sign the contract if awarded.

Should the successful bidder fail to honor these conditions, either by backing out after being selected or refusing to execute the contract, the authority can claim the bid bond as compensation, typically covering the additional cost to engage the next qualified bidder. This mechanism reinforces bidder commitment and mitigates the financial risk and disruption that a withdrawing contractor might cause.

The bid bond amount is often set as a percentage of the bid (commonly between 5% to 10%)and the bond remains enforceable for a defined bid validity period. By obligating bidders to back their submissions financially, bid bonds help ensure that only serious and capable contenders enter the tendering process, enhancing fairness and reliability in procurement.

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