The Letter of Complaint for Non-Payment is a critical business document used when payment obligations remain unfulfilled despite previous informal attempts at collection. This document is particularly relevant in Canadian business contexts, where it must comply with federal and provincial regulations regarding debt collection practices. It typically follows after informal reminders or standard invoicing processes have failed to secure payment. The letter serves multiple purposes: it formally documents the outstanding debt, demonstrates the creditor's attempts to collect, and provides the debtor with clear information about the consequences of continued non-payment. The document should include specific details about the debt, reference any relevant contracts or agreements, and clearly state the expected resolution timeline. This type of letter often represents a crucial step in the escalation process before pursuing legal action and may be referenced in subsequent legal proceedings if payment remains outstanding.

1. Sender's Details: Full name, address, and contact information of the creditor or their representative

2. Date: Current date of the letter

3. Recipient's Details: Full name, address, and contact information of the debtor

4. Subject Line: Clear indication that this is a formal complaint regarding non-payment

5. Reference Numbers: Any relevant invoice numbers, account numbers, or contract references

6. Outstanding Amount: Clear statement of the total amount owed, including any interest or late fees

7. Payment History: Summary of original payment terms and any payments received to date

8. Previous Communications: Reference to previous attempts to collect the debt

9. Demand for Payment: Clear statement of payment expectations and deadline

10. Consequences: Statement of intended actions if payment is not received by the deadline

11. Closing: Professional closing statement with contact information for response