The Open Source Invoice is a specialized invoicing document designed for use in Belgium when billing for open source software, components, services, or related consultancy work. It combines standard Belgian invoicing requirements (including VAT regulations and mandatory invoice elements) with specific provisions for open source licensing and attribution. This document is particularly useful when providing open source solutions, whether as standalone products or as part of larger technology implementations. It ensures compliance with both Belgian commercial law and open source licensing requirements while maintaining transparency about the open source nature of the products or services being billed. The document is structured to accommodate various transaction types, from simple software component delivery to complex implementation projects.
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1. Invoice Header: Contains mandatory invoice elements: unique invoice number, date, and document identification
2. Seller Information: Legal business name, address, VAT number, registration numbers, and contact details of the invoice issuer
3. Buyer Information: Legal name, address, VAT number (if applicable), and contact details of the invoice recipient
4. Service/Product Details: Detailed description of products/services provided, including any open source components or licenses
5. Financial Information: Prices, quantities, VAT rates, subtotals, and total amount due in EUR
6. Payment Terms: Payment deadline, accepted payment methods, and banking details
7. Legal Notices: Mandatory legal notices including late payment terms as required by Belgian law
1. Purchase Order Reference: Include when the invoice relates to a specific purchase order or contract
2. Delivery Information: Add for physical goods to specify delivery address and terms
3. Open Source License Details: Extended section for complex open source licensing terms when multiple components are involved
4. Discount Information: Include when special discounts or promotional rates apply
5. VAT Reverse Charge: Include for cross-border EU transactions where VAT reverse charge applies
1. Schedule A - Itemized List: Detailed breakdown of products/services when the main invoice body is insufficient
2. Schedule B - Open Source Licenses: Full text of applicable open source licenses
3. Appendix 1 - Terms and Conditions: Standard terms and conditions including open source provisions
4. Appendix 2 - Supporting Documentation: Any relevant supporting documents such as timesheets or delivery receipts
Relevant legal definitions
Clauses
Relevant Industries
Information Technology
Software Development
Consulting Services
Digital Services
E-commerce
Financial Services
Healthcare Technology
Educational Technology
Manufacturing
Telecommunications
Relevant Teams
Finance
Legal
Software Development
Accounts Receivable
Procurement
Compliance
Commercial Operations
Technology
Billing
Project Management
Relevant Roles
Software Developer
Finance Manager
Accounts Receivable Specialist
Legal Counsel
Open Source Compliance Officer
Project Manager
Chief Technology Officer
Billing Administrator
Commercial Director
Procurement Manager
Solutions Architect
Financial Controller
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