By July 2025, the Swiss Arbitration Centre will formally implement the Supplemental Swiss Rules for Trust, Estate and Foundation Disputes (TEF Rules), representing a significant evolution in the arbitration framework available for private wealth matters. These new provisions build upon the Swiss Rules of International Arbitration (2021), offering a robust and specialized mechanism to address the unique complexities that arise in trust, estate, and foundation (TEF) disputes.
A Response to Legal Complexity in Private Wealth
The need for a specialized set of arbitration rules for TEF disputes stems from the inherently cross-jurisdictional and sensitive nature of private wealth conflicts. Trusts, often governed by foreign law but recognized in Switzerland under the Hague Convention, along with wills and foundations, may involve numerous parties with diverging interests across multiple legal systems.
The TEF Rules fill an essential gap: while the Swiss Rules have long allowed for arbitration clauses in unilateral legal instruments, such as wills and foundation statutes, the new framework explicitly addresses the legal and procedural subtleties of these arrangements. Notably, recent amendments to the Swiss Private International Law Act and the Civil Procedure Code have affirmed the validity of arbitration clauses in unilateral acts, provided the seat of arbitration is in Switzerland.
Scope and Structure
The TEF Rules apply when arbitration clauses embedded in unilateral legal instruments, like testaments or trust deeds, reference the Swiss Rules, or when the parties otherwise agree to their application. They are not standalone rules but rather supplemental to the Swiss Rules, tailored to address the specific needs of TEF disputes. These needs include issues of arbitrability, the status of unborn or unidentified beneficiaries, and the enforcement of awards in jurisdictions where the arbitration of particular family and estate matters might be restricted.
One of the primary innovations of the TEF Rules is their recognition of “Entitled Persons” a term that includes not just the direct parties to a dispute but also individuals whose rights may be impacted by its outcome. This ensures broader procedural fairness, especially in multi-generational or charitable foundations.
Confidentiality, Customization, and Expertise
Confidentiality is an exceptionally valued feature in wealth disputes, which often involve prominent individuals or sensitive family matters. Arbitration ensures privacy while allowing parties to choose arbitrators with specific expertise in trust or inheritance law, unlike traditional court litigation, where judges may lack specialized knowledge.
Another benefit of arbitration is its procedural flexibility, which accommodates diverse cultural and legal expectations by allowing parties to agree on the seat, language, and structure of the proceedings.
Legal Challenges and Limitations
Despite these advantages, legal uncertainty remains in some areas. For instance, heirs entitled to statutory shares under Swiss law must consent to arbitration clauses for them to be binding. Furthermore, real estate located in jurisdictions with mandatory local court jurisdiction may fall outside the reach of arbitration. The enforceability of arbitral awards may also be limited in countries not party to the New York Convention, or where TEF disputes are not considered commercial matters under local law.
Practitioners are therefore advised to carefully evaluate the laws of all potentially relevant jurisdictions, especially those governing real property, inheritance, or trust law, before relying exclusively on arbitration.
Model Clauses for Future-Proof Planning
To guide testators, settlors, and drafters of foundation statutes, the Swiss Arbitration Centre has released several model arbitration clauses, adaptable to various contexts: wills, inheritance contracts, trust deeds, and foundations. These are designed to ensure maximum enforceability while reflecting the unique structure of each legal instrument.
For example, trust deed clauses bind future trustees, protectors, and beneficiaries, extending arbitral jurisdiction to all who claim benefits under the instrument. In foundation disputes, arbitration may govern not only entitlements but also the legitimacy of beneficiaries, structural changes to the foundation, and internal governance matters.
Conclusion
The introduction of the TEF Rules underscores Switzerland’s position as a global leader in private wealth governance and dispute resolution. By aligning arbitration practice with the nuanced realities of trust and estate disputes, the Swiss Arbitration Centre has developed a forward-thinking, flexible tool set for resolving some of the most delicate legal matters. Lawyers, fiduciaries, and families across jurisdictions would do well to familiarize themselves with the TEF Rules and consider incorporating them into future estate and succession planning.
