Bid and performance bond cost in Canada

STA 0+120What each bond actually secures

A construction bond is not insurance for the contractor — it is a financial undertaking from a third-party surety to the project owner, backed by the contractor's own indemnity to the surety if a claim is paid. Three types cover most civil tenders:

• Bid bond. Assures the owner that if a contractor's bid is accepted, the contractor will sign the contract and provide the required performance and payment bonds. If the contractor walks away after winning, the bid bond compensates the owner, typically up to the difference between that bid and the next lowest compliant one.
• Performance bond. Assures the owner the contract will actually be completed. If the contractor defaults, the surety steps in to complete the work or compensate the owner, up to the bond's face amount.
• Labour and material payment bond. Backs payment to the contractor's subcontractors and suppliers. If they do not get paid, they can claim against this bond directly, rather than only relying on a builders' lien against the property.

The full conceptual detail, including bid bond versus an agreement to bond, is in the bid, performance and payment bonds guide. This page is specifically about what sets the price.

STA 0+240Why public owners require them

Bonding is a qualification mechanism as much as a financial safeguard: a surety underwriter will only issue a bond to a contractor it believes is financially and operationally capable of completing the work, which means a bonded bid has already passed a private risk review before the public owner ever sees it. On a program the scale of Ontario's Ministry of Transportation — 94 major capital tenders worth a combined $1,773 million in fiscal 2024-25 alone¹¹ — bonding is one of the few practical ways a public owner can screen bidder capacity across that many contracts without underwriting the risk itself. See bidding on public tenders for how bonding fits into a full tender submission.

STA 0+360How a bond premium is actually set

A bond premium — the fee a contractor pays the surety for that backing — is underwritten individually, not set by a published rate card. A surety typically reviews:

• The contractor's financial statements, working capital and overall balance sheet strength.
• Current work in progress and bonding capacity already committed to other projects.
• Track record: completed projects, claims history, and how long the company has operated.
• The specific project's size, duration, complexity and contract terms.

No public source, in Alberta or any other province, publishes a standard premium rate or percentage, and treating any figure you find elsewhere as an authoritative rate would be a mistake — premiums are risk-priced per contractor and can differ meaningfully between two companies bidding the same job. A contractor's bonding company or broker is the only source for an actual premium quote.

STA 0+480Holdback is not a bond — do not confuse the two costs

Statutory holdback and a performance or payment bond are frequently confused because both exist to protect an owner and subcontractors from non-payment, but they work completely differently. Holdback is money the owner withholds from the contractor's own payments, set by provincial lien legislation, usually 10%:

A bond, by contrast, is a fee paid to a third-party surety for that backing, and does not come out of contract payments the way holdback does. A contractor can be subject to both statutory holdback and a bonding requirement on the same contract, and neither one substitutes for the other.

STA 0+600What actually affects a contractor's bonding cost

Since there is no published rate, the factors that move an individual contractor's premium and available bonding capacity are worth understanding directly:

• Financial strength grows capacity. Stronger working capital and equity generally support a larger total bonding program, not just a lower rate on one bond.
• A clean claims history helps. A surety that has never had to pay a claim on a contractor's behalf views that contractor as lower risk than one with a claims history.
• Contract duration and size add exposure. A longer or larger contract ties up more of a contractor's total bonding capacity, which can affect what else that contractor can bid on at the same time.
• New contractors face a harder qualification, not necessarily a higher rate. A company without a track record may struggle to get bonded at all before it struggles with the price of being bonded.

STA 0+720Getting bonded

A contractor gets bonded through a licensed surety company or broker, not through a government office. To get a premium quote, expect to provide financial statements, a summary of current and completed projects, and the specific tender or contract documents that specify the required bond amounts and forms. Building a relationship with a surety before it is needed for a specific bid is generally faster than starting the process against a tender deadline.

A contractor bidding public civil work for the first time should expect the qualification conversation with a surety to take longer than the first premium quote itself, since the underwriter has no track record to lean on yet. Established contractors renewing an existing bonding relationship typically move through the same review faster, project by project, once the surety already understands their financial position.