Software Developer Invoice Template (EU)
Invoice template for software developers in the EU covering cross-border VAT, reverse charge rules, and digital service billing.
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When to Use This Template
This template is for software developers, programmers, and IT contractors based in the European Union who need to bill clients for development work. Whether you build web applications, mobile apps, APIs, or provide DevOps services, this template covers the invoicing essentials specific to the EU regulatory environment.
Software development is classified as an electronically supplied service under EU VAT rules, and the place of supply for B2B transactions is where the client is established. This means that if you are a developer in Germany billing a company in France, the French company handles the VAT under the reverse charge mechanism. You still need to include specific references on your invoice for this to work correctly, including both parties’ VAT identification numbers and a clear note that the reverse charge applies.
For B2C sales (selling directly to consumers), the rules are different. The MOSS or OSS (One Stop Shop) scheme may apply, and you would charge VAT at the rate of the customer’s country. However, most software development work is B2B, so the reverse charge scenario is far more common. If you work with clients both inside and outside the EU, keep your invoicing consistent but adapt the VAT treatment per transaction.
Key Fields to Include
- Your business name, address, and EU VAT identification number
- Client’s name, address, and VAT identification number
- Sequential invoice number following your national format
- Invoice date and service delivery period
- Detailed description of development work (feature, sprint, module)
- Hourly rate or milestone price with quantity
- Net amount in the agreed currency (EUR common for cross-border)
- VAT line: either the applicable rate or “Reverse charge - Article 196 Council Directive 2006/112/EC”
- Total amount due
- Payment details (IBAN and BIC for SEPA transfers)
- Payment terms
Tips
- Validate your client’s VAT number using the EU VIES system before applying the reverse charge. If the number is invalid, you must charge your local VAT rate.
- When invoicing in a currency other than your home currency, record the ECB exchange rate on the invoice date for your VAT return.
- Break down development work into clear line items (e.g., “Frontend development - user dashboard, 40 hours”) so clients can allocate costs internally.
- SEPA bank transfers are the standard payment method within the EU. Include your IBAN and BIC to avoid delays.
- Store invoices for the retention period required by your country, typically 7 to 10 years for EU member states.
Frequently Asked Questions
How does VAT work when I develop software for a client in another EU country?
When you supply B2B services to a client in another EU member state, the reverse charge mechanism applies. You invoice without VAT, and the client accounts for VAT in their own country. You must include both VAT IDs and a note referencing the reverse charge.
Do I need to issue invoices in a specific language?
Most EU countries require invoices to be in the local language or an accepted language (often English). In practice, English invoices are widely accepted for cross-border B2B transactions, but check the specific requirements of your client's country.
Should I invoice per milestone or per hour for software projects?
Either approach works. Milestone-based invoicing is common for fixed-price projects and makes it easier for clients to match payments to deliverables. Hourly invoicing suits ongoing development and maintenance work. Specify the method in your contract.