An Ontario proper invoice starts the prompt-payment workflow when it satisfies the Construction Act and the contract. Contractors should organize invoice details, approved change orders, payment terms, holdback, supporting documents, and delivery proof before sending it.
Contractor checklist
- Contract and project identification
- Invoice date and billing period
- Description of services or materials
- Amount payable and taxes
- Approved change orders included in the claim
- Holdback or retainage shown clearly when applicable
- Supporting photos, timesheets, delivery slips, or payment applications
- Delivery record showing when the invoice was submitted
Not legal advice. Use this page as an operational checklist and verify the current statute, contract, and project rules.