1. Interest Calculation: Detailed breakdown of interest calculations when claiming default interest - use when significant time has passed since due date

2. Collection Costs: Statement of additional costs incurred in collecting the debt - include when applicable collection fees have been incurred

3. Previous Communication Reference: Detailed reference to previous communications - include when multiple reminders have been sent

4. Settlement Offer: Proposed payment plan or settlement terms - include when willing to negotiate payment terms

5. Business Relationship Statement: Statement about the value of the business relationship and desire to resolve matters amicably - include for long-term business partners

1. Copy of Original Invoice(s): Copies of all relevant unpaid invoices

2. Payment History Log: Chronological list of all relevant communications and payment attempts

3. Interest Calculation Sheet: Detailed breakdown of interest calculations if claiming default interest

4. Previous Correspondence: Copies of previous payment reminders and relevant correspondence