A day count is only useful when the starting fact is reliable.
Construction payment timelines are not one universal clock. Before calculating anything, identify the project regime, payment tier, actual Proper Invoice receipt date, related upstream invoice and payment facts, last physical work or materials date, known notices, and any dispute.
Rate records those as customer-supplied facts and shows system-calculated awareness dates. The customer and qualified counsel remain responsible for legal decisions.
The numbers teams often need to operationalize.
General owner dispute-notice awareness
The owner's general written notice of dispute window after receiving a Proper Invoice. The actual notice, invoice, contract, and facts require review.
General owner payment awareness
The common owner-to-contractor payment clock after receipt of a Proper Invoice on an ordinary private construction project.
General paid-chain flow-down awareness
A common contractor-to-subcontractor payment period after the contractor receives the related upstream payment.
Unpaid-chain awareness by tier
Common contractor and lower-tier operating checkpoints when upstream payment has not flowed down, subject to notices and the actual payment chain.
General lien-registration awareness
Common Alberta lien periods for general work and certain concrete or oil-and-gas contexts. The anchor is not simply the invoice date.
Make the timeline auditable.
- Private construction or a separate public-works framework
- Contractor, subcontractor, or lower-tier role
- Payer receipt date for the controlling Proper Invoice
- Known upstream payment and notice facts
- Last physical work or materials supplied—not just paperwork
- Concrete, oil-and-gas, road, reserve, federal, security, or notice exceptions
Public works and unusual project facts need a separate path.
Alberta public-works contracts can use a separate prompt-payment and claim framework. Road and highway projects can require special review. Reserve or federal land, security posted for a lien, a notice to commence, partial payment, or an existing dispute can also change what matters next.
Do not force an exception through an ordinary private-project calculator. Flag the uncertainty, preserve the source documents, and obtain qualified review.
Turn known dates into an initial awareness view.
The payment-timeline calculator runs in the browser and does not save invoice data. It provides general awareness based on the dates entered; it does not determine legal validity or filing rights.
Open the Alberta invoice date checkAlberta construction payment timeline FAQ
Does every construction invoice have a 28-day payment date?
No. The general owner-to-contractor clock depends on a Proper Invoice and the actual project facts. Subcontractor flow-down, public works, notices, disputes, and contract context can change the operating timeline.
Does the lien-awareness period run from the invoice date?
Not generally. The relevant anchor can depend on work, supply, abandonment, completion, or other statutory events. Preserve the last physical work or supply facts and confirm the applicable anchor with qualified Alberta counsel.
Can Rate Automation confirm a filing deadline?
No. Rate records customer-supplied facts and system-calculated awareness dates. A qualified Alberta construction lawyer confirms legal deadlines, notices, filings, and enforcement.
Official sources: Alberta prompt-payment rules, the Prompt Payment and Construction Lien Act, and Alberta construction lien guidance.