Self Employed Consultant Invoice Template for Switzerland

When you're operating as a self-employed consultant in Switzerland, creating proper invoices isn't just good business practice—it's a legal requirement under Swiss law. Your invoice serves as both a formal payment request and essential documentation for tax and accounting purposes, ensuring compliance with the Swiss Code of Obligations and federal regulations.

When do you need this document?

You'll need to issue a self-employed consultant invoice whenever you complete services for a client and need to request payment. This includes situations like completing a project milestone, finishing monthly consulting work, delivering training sessions, or providing expert advisory services. The invoice becomes particularly crucial when working with corporate clients who require detailed documentation for their accounts payable processes. You'll also need proper invoices to maintain accurate records for your annual tax filing and to comply with Swiss accounting requirements. If your annual turnover exceeds CHF 100,000, proper invoicing becomes even more critical as you'll need to register for VAT and include VAT calculations on your invoices.

Key legal considerations

Your invoice must include specific mandatory elements under Swiss law to be legally valid. The document must clearly identify both parties, include a unique invoice number, specify the services provided with dates of delivery, and state clear payment terms. Under the Swiss Code of Obligations, you have the right to charge interest on overdue payments, but this must be clearly stated in your terms. Payment terms should be reasonable—typically 30 days is standard, though you can specify shorter periods. Be careful about VAT obligations: if you're not VAT-registered, you cannot charge VAT, but if you are registered, you must include the correct VAT rate (currently 7.7% for most services). Your invoice also serves as crucial documentation for potential debt collection proceedings under the Federal Act on Debt Enforcement and Bankruptcy if payment disputes arise.

Legal requirements in Switzerland

Swiss federal law mandates specific requirements for consultant invoices that you must follow to ensure legal compliance. Under the Federal Act on Accounting, you must retain all invoices for 10 years, so maintain both digital and physical copies. Your invoice must be issued in one of Switzerland's official languages (German, French, or Italian) depending on your canton, though English is often accepted for international clients. If you're VAT-registered, your invoice must include your VAT number and show VAT calculations separately. The Swiss Code of Obligations requires that your invoice clearly specify what services were provided and when, creating a legal trail that protects both parties. For social insurance purposes under the Federal Law on Social Insurance, proper invoicing helps establish your self-employed status and ensures correct contribution calculations. Bank details must be accurate and complete, as incorrect payment information can delay payment and potentially void your legal claim to timely settlement.