Client Engagement Letter Template for Switzerland

When establishing a professional service relationship in Switzerland, a Client Engagement Letter serves as the foundation for clear communication and legal protection. This formal document outlines the terms of your professional engagement while ensuring compliance with Swiss law, particularly the Swiss Code of Obligations and relevant regulatory frameworks.

When do you need this document?

You need a Client Engagement Letter whenever you begin providing professional services to a client in Switzerland. This includes situations such as starting a new consulting project, commencing legal representation, beginning financial advisory services, or initiating any mandate relationship covered by Articles 394-406 of the Swiss Code of Obligations. The document is particularly crucial in regulated industries where specific disclosure requirements must be met under laws like the Federal Act on Financial Services (FinSA) or when handling personal data subject to the Federal Act on Data Protection (FADP). Professional firms are also required to use engagement letters to establish clear boundaries and expectations, protecting both parties from potential misunderstandings or disputes.

Key legal considerations

Your Client Engagement Letter must clearly define the scope of services to avoid potential liability issues under Swiss mandate law. Include specific limitations and exclusions to prevent scope creep and establish clear boundaries of responsibility. Fee arrangements should be transparent and comply with professional standards, including any retainer requirements and billing procedures. The document should address confidentiality obligations, data protection measures, and conflict of interest procedures. Include termination clauses that specify how either party can end the engagement and what happens to work in progress. Professional liability and insurance disclosures may be required depending on your industry, and you must ensure compliance with good faith principles fundamental to Swiss contract law.

Legal requirements in Switzerland

Under Swiss law, engagement letters must comply with the Swiss Code of Obligations, particularly the provisions governing mandate agreements. If you're providing financial services, you must include client classification disclosures and risk warnings required by FinSA. Data protection clauses must align with FADP requirements, specifying how client information will be collected, processed, and stored. Professional service providers in regulated industries must include specific regulatory disclosures and ensure the letter meets industry-specific requirements. The document should be written in one of Switzerland's official languages and clearly identify all parties, their roles, and contact information. Include provisions for dispute resolution, preferably specifying Swiss jurisdiction and applicable law to avoid complications in cross-border engagements.