Ontario Notice of Non-Payment Deadline

Ontario prompt-payment workflows make timing important. Contractors should track when a proper invoice was given, when payment is due, whether a notice of non-payment was delivered, and what evidence supports the invoice.

What to track

Proper invoice delivery date
Owner response or notice date
Payment due date
Subcontractor payment obligations
Open change orders, deficiencies, or set-off claims
Documents needed for adjudication or collections

Holdback calculator

Estimate the holdback and invoice clock.

Use this as a planning calculator only. Construction payment, lien, holdback, and notice rules depend on jurisdiction, contract terms, project type, and timing.

Contract or invoice amount Holdback percent Proper invoice date Owner payment period

Holdback$10,000.00

Net payable before holdback release$90,000.00

Estimated payment dueChoose invoice date

Ontario non-payment notice checkpointChoose invoice date