1. VAT and Taxation: Include when fees are subject to VAT or specific tax treatments

2. Currency and Exchange: Include for international payments or when multiple currencies are involved

3. Price Adjustment Mechanism: Include when fees may be adjusted over time based on specific factors

4. Security Deposit: Include when a security deposit is required to secure fee payments

5. Third-Party Payments: Include when payments may be made by or to third parties

6. Force Majeure: Include when payment obligations might be affected by extraordinary circumstances

7. Audit Rights: Include when one party needs the right to audit fee calculations or payment records

1. Fee Schedule: Detailed breakdown of all fees, rates, and charges

2. Payment Schedule: Timeline of payment dates and amounts for recurring payments

3. Bank Account Details: Banking information for both parties

4. Calculation Methodology: Detailed explanation of how variable fees are calculated

5. Service Level Requirements: If fees are linked to service levels, details of performance metrics

6. Form of Invoice: Template or required format for invoices

7. Authorized Representatives: List of persons authorized to approve or process payments