A Service Invoice is a critical business document used in Hong Kong's commercial environment to formally request payment for services provided. It serves multiple purposes: as a payment demand, a record of services rendered, and a tax document that complies with Hong Kong's regulatory requirements. The document should be used whenever a business or individual provides professional services and needs to request payment, forming part of the official business records required by Hong Kong authorities. A properly structured Service Invoice must include the service provider's business details, client information, clear service descriptions, payment terms, and any applicable tax considerations. It's essential for maintaining proper financial records and ensuring compliance with Hong Kong's Business Registration Ordinance and Inland Revenue Ordinance.

1. Invoice Header: Company logo, 'Invoice' title, and invoice number

2. Service Provider Details: Legal business name, address, BR number, contact information

3. Client Details: Client's name, billing address, and contact information

4. Invoice Information: Invoice date, due date, payment terms, reference numbers

5. Service Description: Detailed breakdown of services provided with descriptions

6. Pricing Details: Unit prices, quantities, subtotals for each service

7. Total Amount: Subtotal, any applicable taxes, and total amount due

8. Payment Instructions: Bank details or other payment methods accepted

9. Terms and Conditions: Basic terms including payment terms and late payment policies