Construction holdback rules by province

STA 0+120What a holdback is for

Every province's lien legislation works the same way in outline: each payer on a contract where a lien could arise must retain a percentage of the value of the work and materials actually supplied, and keep it retained until the lien rights of everyone below that payer have expired or been satisfied. It is not the payer's money to spend in the meantime, and it is separate from any deficiency holdback the contract itself might set for incomplete work. The holdback exists so a subcontractor or supplier who does not get paid still has a specific fund to register a lien against, rather than chasing a contractor who has already spent the job's cash.

The obligation runs down the whole contracting chain, not just from owner to prime contractor. An owner retains holdback from the contractor, the contractor retains the same percentage from each subcontractor, and a subcontractor retains it from its own sub-subcontractors and suppliers in turn. Every link in that chain is both a holder of someone else's holdback and subject to having its own payment held back one level up, which is why the release date matters just as much to a mid-tier subcontractor as it does to the general contractor.

STA 0+240Who actually holds the money

"Holdback" describes an obligation, not a separate bank account. In most provinces the payer is not required to segregate the holdback into a dedicated trust account; it simply cannot be paid out until the statutory conditions are met, and the payer remains liable for it regardless of what happens to its own cash flow in the meantime. That distinction matters on a project where the owner or a mid-tier contractor runs into financial trouble: the holdback obligation does not disappear, but collecting on it can turn into a lien claim and, in a worst case, a fight with other creditors rather than a straightforward payment.

This is also why the certificate of substantial performance or completion is worth tracking carefully. It is usually published (posted at the site, in a local trade paper, or through a public notice, depending on the province) specifically so subcontractors and suppliers know their lien deadline has started running, and by extension when they should expect their share of the holdback to become payable.

STA 0+360Holdback rate and release by province

Quebec, New Brunswick, Prince Edward Island and Newfoundland and Labrador each have their own lien or holdback regime; this research did not extract a confirmed current rate and release timing for them, so they are left out of the table rather than guessed at.

STA 0+480Ontario’s mandatory annual holdback release

Ontario changed how holdback works on long contracts. Following each contract anniversary, the owner has to publish a notice of annual release no later than 14 days after the anniversary, and then pay the accrued holdback at least 60 but not later than 74 days after that notice, unless a lien has been preserved against it². That is a meaningful shift from the older model, where holdback typically sat untouched until the very end of a multi-year project: on an eligible contract, a subcontractor working in year one can now expect its share of that year's holdback released well before the project finishes, not held hostage to the whole job's completion.

STA 0+600What triggers the release clock

The clock almost always starts at substantial performance or completion, not at the invoice date or the last day worked. Substantial performance has its own legal test in each province — Nova Scotia, which also uses the standard 10% holdback rate, treats a contract as substantially performed once the cost of the work remaining does not exceed 2.5% of the contract price⁶ — and getting that date right matters, because it is also usually the date that starts the clock on when a lien has to be registered. A contractor or subcontractor who is unsure when substantial performance was certified should ask for the certificate directly rather than estimating from the schedule.

STA 0+720What holdback means for cash flow

Holdback is money a contractor and its subtrades have genuinely earned but cannot collect on the normal progress-payment schedule. On a $1,000,000 subcontract at the standard 10% rate, that is $100,000 sitting with the payer until the release conditions are met — real money for financing equipment, payroll and material purchases in the meantime. This is a different problem from a late progress payment, which is what prompt payment and adjudication covers: prompt payment legislation sets the clock for paying invoiced amounts other than the holdback itself. A contractor bidding public work should plan financing around both — the invoice-payment clock and the separate holdback release date — rather than treating "payment" as one single event. See bidding on public tenders and bid, performance and payment bonds for the other financial-security pieces of a tendered contract.