A Comprehensive Guide to Bid Bonds

By Joseph
October 20, 2022


If you are into the construction and real estate industry, you must have run across the word’ bid bond.’ But what does this term mean? Bid bonds assist in guaranteeing that the contractor shall comply with the terms and conditions of the contract. In contrary conditions, the project owner shall be compensated. 

A bid bond is especially applicable in large-scale construction projects and has become a key element in construction projects in the past few years. Further, Ontario was the first province to introduce it as a mandatory component for large-scale civil construction projects worth over $500,000. Numerous reliable and trustworthy insurance providers in Canada offer such surety bonds. 


The contractor generally offers a bid bond during the bidding process. It guarantees the project owner that the successful bidder will abide by the contract terms and will pay the owner back if he doesn’t. Civil, general, road-paving, or mechanical contractors require these bonds.  

What is a Bid Bond?

It is a construction bond that secures the project owner during the bidding procedure. Banks or insurance companies will issue bid bonds to assure that the successful bidder will adhere to the contract’s provisions put forth by the project owner or developer. Further, surety bonds make it mandatory to compensate the project owner if the bonded contractor breaches the contract. 

The project owners who generally require a bid bond are hospitals, municipal owners, school boards, and public work boards in Canada. Moreover, in Canada, specifically Ontario, it is compulsory for the bidder to present a bid bond during the bidding procedure for projects that cost over $500,000. 

Working of a Bid Bond

It is a three-party surety that includes the project owner, i.e., the obligee, the contractor, and a third-party guarantor. This is a written guarantee issued by the guarantor to the project developer. Not to forget, it assures that the winning bidder has enough funds to carry out the project. In addition, the contractor must deposit a fund to the project owner as a bid. It also assures the project owner that it will be executed effectively per the contract clauses within a given budget and time. 

Cost of a Bond

The amount paid by the contractor to the surety for obtaining a bid bond depends on variable factors. The cost depends on the bidding cost as well as the location of the project. Additionally, the premium also depends on the contractor’s history. The premium is relatively lower for smaller projects. The premium might cost as low as $100. On the other hand, the premium of large-scale projects is generally 5 percent to 10 percent of the total project cost.  

Importance of a Bid Bond

The benefits associated with a bid bond are numerous, such as it offers a top-notch guarantee that the task will be completed. Additionally, these are comparatively cost-effective solutions as performance bonds, and in comparison to a performance bond, a bid bond offers a more secure solution.


In essence, a bid bond guarantees that the winning bidder has the proper finance to carry out the project effectively. Obtaining this bond is extremely important for the project owner and is issued by a surety agency. Several reliable insurance agencies in Ontario, Canada, serve the purpose of issuing the bid bond.

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