TLDR: Prompt payment legislation is now active in Ontario, Alberta, Saskatchewan, and Nova Scotia, with British Columbia and federal projects catching up. If you’re an owner, contractor, or subcontractor working across provincial lines, the payment clock and dispute rules aren’t the same everywhere, and that gap is starting to matter.
Why Prompt Payment Laws Exist in the First Place
Construction has always had a cash flow problem. Owners pay contractors late, contractors pay subcontractors even later, and by the time money trickles down to the trades on site, months have passed. Prompt payment legislation was built to fix that by forcing strict deadlines and giving unpaid parties a fast way to get a ruling instead of waiting years for a court date.
Ontario got there first. Its Construction Act brought in prompt payment and adjudication rules back in October 2019, and the province has kept tweaking the framework since, with another round of amendments taking effect January 1, 2026. That head start made Ontario the template every other province has copied, more or less.
The Basic Formula Most Provinces Use
Strip away the local wording and most regimes follow the same shape. Once a contractor sends a proper invoice, the owner has 28 days to pay. The contractor then has 7 days to pay the subcontractor after receiving that payment, and the subcontractor has another 7 days to pay whoever is below them. Miss the deadline and the unpaid party can trigger adjudication, a quicker alternative to litigation meant to resolve disputes in weeks rather than years.
Where Each Province Actually Stands
Here’s the real patchwork, province by province, as it looks heading into 2026.
Ontario’s regime is fully in force and the most mature in the country. Alberta followed with its Prompt Payment and Construction Lien Act, which came into effect August 29, 2022, alongside its own adjudication regulations. Saskatchewan passed the Builders’ Lien (Prompt Payment) Amendment Act in 2019 and has it running now too, leaning on the ADR Institute of Saskatchewan to handle adjudication cases.
Nova Scotia has gone through its own transformation, renaming its existing lien statute the Builders’ Lien and Prompt Payment Act to bring in a regime that largely mirrors Ontario’s. New Brunswick has prompt payment provisions in motion as well, and federally funded construction work now falls under the Prompt Payment for Construction Work Act, passed in 2019.
British Columbia Is Still Catching Up
BC is the interesting one to watch right now. The province introduced its Construction Prompt Payment Act in late 2025 after years of consultation, including town hall sessions held back in 2021 to build industry buy-in. Once it’s fully in force, BC’s rules will largely match Alberta and Ontario on invoice requirements, payment timelines, and adjudication, though notably it won’t extend prompt payment protection to architects and engineers the way Ontario does.
The Provinces With No Regime Yet
Not every province has joined in. Quebec, Manitoba, and the Atlantic provinces outside Nova Scotia and New Brunswick still don’t have dedicated prompt payment statutes in force. For now, parties working in those jurisdictions are stuck relying on whatever payment terms sit in their contracts and the slower, traditional lien and litigation process if something goes wrong.
What This Patchwork Means for Multi-Province Projects
If your company works in more than one province, this unevenness isn’t just a legal curiosity, it’s an operational headache. A subcontractor on a project spanning Alberta and Saskatchewan needs to track two separate payment clocks and two separate adjudication bodies. Add a Quebec leg to the same project and suddenly there’s no prompt payment protection at all for that portion of the work.
Proper Invoices Matter More Than People Think
One detail that trips up a lot of contractors is the definition of a proper invoice. The payment clock doesn’t start the moment you send a bill, it starts the moment your invoice meets the specific content requirements laid out in that province’s legislation. Get the format wrong and you can unknowingly delay your own payment deadline by weeks.
Where This Is Headed
The direction is pretty clear even if the pace isn’t consistent. More provinces are moving toward prompt payment and adjudication frameworks, and the ones already in force keep getting refined rather than left alone, as Ontario’s 2026 amendments show. For owners and contractors working across provincial borders, the smart move right now is building payment terms into contracts that account for whichever regime actually applies to each project, instead of assuming one set of rules covers the whole job.