How Switzerland's 2026 Cross‑border Evidence Rules Change International Commercial Litigation, a Practical Guide

Effective 1 January 2026, Switzerland overhauled its framework for cross-border evidence in Switzerland, introducing simplified mutual‑assistance procedures and generalising the use of videoconference testimony for persons located on Swiss territory. These reforms, anchored in amendments to the Swiss Civil Procedure Code and updated federal guidelines on international judicial assistance, fundamentally alter the decision calculus for litigators and in‑house counsel managing multi‑jurisdictional commercial disputes. For practitioners who have spent years navigating the slow, formal machinery of letters rogatory under the 1970 Hague Evidence Convention, the 2026 changes create faster, technology‑enabled alternatives, but they also introduce new tactical questions about when each route is appropriate and how cantonal implementation may vary.

Key Changes at a Glance

Before diving into detailed procedure, practitioners should note the three headline shifts that reshape cross-border evidence strategy in Switzerland from 2026 onward:

• Videoconference testimony generalised. Switzerland now expressly accepts that persons staying in Switzerland may be questioned or examined by a commissioner or court located abroad via videoconference or conference call, subject to defined conditions and the consent of the witness. This removes a long‑standing barrier that previously required physical presence or formal letters rogatory for most witness evidence.
• Simplified mutual assistance procedures introduced. A streamlined route for requesting the taking of evidence in Switzerland for foreign civil and commercial proceedings reduces diplomatic overhead and processing time, particularly for routine witness examinations and document inspections.
• Swiss CPC amendments support broader cooperation. The swiss civil procedure 2026 amendments create a clearer domestic legal basis for Swiss courts to facilitate foreign evidence requests, closing gaps that previously forced parties to rely exclusively on the Hague Evidence Convention or bilateral treaties.

Industry observers expect these changes to cut typical evidence‑gathering timelines significantly for cooperative matters, though compelled production, particularly from banks and financial institutions, still requires the formal Hague Convention route in most cases.

Legal Background: What Changed in 2025–2026

Under Swiss law, the examination or hearing of a person in Switzerland in aid of foreign civil proceedings has historically been considered an official act that could only be performed by Swiss authorities or through international judicial cooperation channels. The 2025–2026 reform package targeted this restrictive posture, bringing Switzerland closer to the approach of other major commercial jurisdictions that already permitted remote cross‑border testimony.

The legal architecture rests on three pillars: the Hague Evidence Convention of 1970 (to which Switzerland is a contracting state), Switzerland’s domestic legislation on international judicial assistance in civil matters, and the Swiss Civil Procedure Code. The reforms amend the second and third of these, while leaving Switzerland’s Hague 1970 obligations intact, meaning the Convention remains the mandatory channel for specific categories of evidence requests, particularly compelled document production from third parties.

The Swiss Federal Council’s updated guidelines on international judicial assistance in civil matters, published by the Federal Office of Justice (RHF/fedpol), provide the detailed procedural guidance that Swiss cantonal authorities follow when processing incoming requests. These guidelines now incorporate the videoconference and simplified‑procedure options, although cantonal roll‑outs are proceeding on staggered timelines through 2026–2027.

Timeline of Key Legislative Events

Practical Decision Framework for Cross‑Border Evidence in Switzerland

The central strategic question for any litigator planning evidence‑taking in Switzerland is now: should I use the new 2026 simplified procedures, or should I file a formal request under the Hague Evidence Convention? The answer depends on four variables: the type of evidence sought, the cooperation level of the witness or evidence holder, the compulsion powers needed, and the admissibility requirements of the requesting court.

Three Common Use Cases

• Use Case 1, Urgent witness testimony, cooperative witness. A key witness resides in Zurich. The foreign court needs testimony within six weeks for an interim hearing. The witness is willing to testify. Recommended route: Swiss 2026 videoconference procedure. File through simplified mutual assistance, request videoconference examination, and coordinate directly with the competent cantonal authority. Early indications suggest processing times of four to eight weeks for cooperative matters.
• Use Case 2, Document production from a Swiss bank. A claimant in English High Court proceedings needs account records from a Geneva private bank. The bank will not produce voluntarily. Recommended route: Hague Evidence Convention 1970 letter of request. Swiss banking secrecy obligations mean that compelled production from financial institutions still requires formal international judicial assistance, and the hague evidence 1970 declaration framework provides the recognised compulsion mechanism.
• Use Case 3, Expert inspection of Swiss premises. A patent infringement dispute requires an expert to inspect manufacturing facilities in Basel. The defendant is cooperative but insists on protective measures for trade secrets. Recommended route: Swiss 2026 simplified mutual assistance with a tailored protective order. The new procedures accommodate on‑site inspections with appropriate confidentiality safeguards.

Risk Factors: What Pushes You Toward Hague vs Swiss Procedure

Practitioners should lean toward the Hague Convention route when: compulsion against a non‑cooperative third party is essential; the evidence involves bank records or financial data subject to secrecy rules; the requesting court requires formal letters rogatory for admissibility; or sovereign immunity considerations apply. The Swiss 2026 simplified route is preferable when: speed is critical; the witness or evidence holder is cooperative; videoconference witness testimony is acceptable to the requesting court; and the matter involves routine witness examinations or document inspections without banking secrecy barriers.

Practical Step‑by‑Step: Initiating and Managing Evidence‑Taking in Switzerland

This section provides the practitioner’s playbook for each of the three principal evidence‑taking routes now available. For each route, the guidance covers required documentation, filing procedures, estimated timelines and practical tips drawn from the updated RHF/fedpol guidelines and leading practitioner commentary.

Step A, Requesting Assistance Under the Swiss 2026 Simplified Route

The simplified mutual assistance procedure under the 2026 reforms allows a foreign court or tribunal to request the taking of evidence in Switzerland through a streamlined channel. The request is directed to the competent cantonal authority (typically the cantonal court or designated judicial assistance authority) and must satisfy certain formal requirements.

• Draft the request letter. Include: identification of the foreign proceedings (court, case number, parties); the specific evidence sought (witness name and address, documents, inspection); the legal basis for the request (reference to Switzerland’s domestic legislation on judicial assistance in civil matters); and any special procedures requested (e.g., videoconference).
• Language. The request must be in the official language of the canton where the evidence is to be taken (German, French or Italian), or accompanied by a certified translation. Confirm the cantonal language requirement before filing.
• Required attachments. Include a copy of the court order authorising the evidence‑taking, a list of questions or topics for witness examination, and any agreed protective order or confidentiality protocol.
• Filing and transmission. Under the simplified route, the request may be transmitted directly to the competent cantonal authority. For Hague Convention contracting states, the Central Authority (the Federal Office of Justice) may also facilitate transmission.
• Estimated timeline. For cooperative matters, early practice suggests four to eight weeks from filing to execution. Complex requests or those requiring cantonal judicial review may take longer.

Step B, Videoconference Witness Testimony in Switzerland

The 2026 reforms represent a major advance for videoconference witness testimony in Switzerland. Switzerland now accepts that persons staying in Switzerland may be questioned or examined by a commissioner located abroad, or may give testimony directly to a foreign court via video link, subject to the following conditions:

• Witness consent. The witness must consent to being examined by videoconference. Compelled videoconference testimony against a witness’s will is not available under the current framework.
• Technical standards. The videoconference must meet minimum technical requirements for audio‑visual quality, identity verification and recording. Counsel should confirm that the cantonal court’s technical infrastructure supports the proposed platform.
• Presence of a Swiss authority. Depending on the canton, a Swiss judicial officer or commissioner may need to be present at the Swiss end to administer any oath or affirmation under Swiss law and to safeguard the witness’s procedural rights.
• Chain of custody for the record. The examination should be recorded. The recording and any transcript should be certified by the Swiss authority present, to facilitate admissibility in the requesting court.
• Advance coordination. Litigators should coordinate with both the cantonal authority and the foreign court at least three to four weeks before the scheduled examination to resolve technical, linguistic and scheduling issues.

Step C, Hague Evidence Convention (1970) Application Process

The Hague Convention remains the primary channel for taking evidence abroad in Switzerland when formal compulsion is required. The process under the Convention follows these steps:

Under the RHF/fedpol guidelines, a request transmitted under the Hague Evidence Convention shall be met unless the form is incompatible with Swiss law or the execution would prejudice Switzerland’s sovereignty or security. The practical refusal rate for properly formatted commercial evidence requests is very low.

Comparison Table: Hague 1970 vs Switzerland 2026 Procedures

The following table provides a side‑by‑side comparison of the three principal routes for obtaining international evidence from Swiss courts and authorities. Practitioners should use this as a quick‑reference decision tool alongside the detailed guidance above.

Asset Recovery and Urgent Measures, Practical Implications

The 2026 evidence reforms have significant implications for asset recovery in Switzerland, particularly for parties seeking freezing orders, disclosure of asset information, or emergency preservation measures in cross‑border commercial disputes. Switzerland remains one of the world’s most important jurisdictions for asset tracing and recovery, and the interplay between the new evidence‑taking rules and existing provisional‑measures frameworks deserves careful attention.

The simplified mutual legal assistance Switzerland procedures can accelerate the early‑stage information gathering that precedes a formal freezing application. Where a foreign claimant needs to establish that assets are located in Switzerland before applying for provisional measures, the new route allows faster witness examinations and targeted document requests, provided the evidence holder cooperates. For non‑cooperative targets, the Hague Convention route and Swiss domestic provisional measures (including superprovisionelle Massnahmen, emergency measures without prior hearing) remain essential.

The Lugano Convention continues to govern the recognition and enforcement of foreign freezing orders in Switzerland for parties from EU/EFTA states. For parties outside the Lugano framework, bilateral treaties or the Swiss Private International Law Act (PILA) apply. The 2026 evidence reforms do not change the substantive rules on provisional measures, but they provide a faster pathway to obtain the evidentiary foundation needed to support such applications.

Tactical Checklist for Urgent Asset Preservation

• Identify Swiss assets early. Use the simplified 2026 route to request witness examinations or targeted document inspections that can confirm the existence and location of Swiss‑held assets.
• File parallel applications. Where urgency demands it, file a provisional measures application with the competent Swiss court simultaneously with the evidence request, do not wait for evidence to be returned before seeking interim protection.
• Engage Swiss local counsel immediately. Swiss banking secrecy and data protection rules require careful navigation. Local counsel can file emergency applications on very short notice and advise on the scope of permissible disclosure.
• Prepare supporting affidavits. Swiss courts will require a sufficient factual basis to grant freezing orders. Prepare detailed affidavits covering the underlying claim, the risk of dissipation and the specific assets targeted.
• Address banking secrecy head‑on. Swiss banking secrecy is not absolute. Disclosure can be compelled through judicial channels, but the requesting party must follow the correct procedural route, typically a Hague Convention request or a Swiss domestic court order.

How to Respond to a Swiss Evidence Request or Videoconference, Defending and Tactical Responses

Practitioners advising Swiss‑based parties who receive a foreign evidence request, whether under the Hague Convention or the new 2026 procedures, must understand the available grounds for objection and the tactical options for narrowing scope or imposing protective conditions.

Under the RHF/fedpol guidelines, a Swiss authority may refuse to execute a request if it would prejudice Switzerland’s sovereignty or security, or if the form of execution requested is incompatible with Swiss law. In practice, these grounds are construed narrowly for commercial matters. More commonly, the responding party’s strategy focuses on:

• Scope objections. Challenge overbroad or disproportionate requests. Swiss authorities will generally apply Swiss procedural standards on proportionality, and excessive “fishing expedition” requests can be narrowed.
• Data protection grounds. Switzerland’s Federal Act on Data Protection (FADP) and sector‑specific rules (banking, insurance) may provide grounds to limit disclosure of personal data or commercially sensitive information. The interplay with the EU’s E‑Evidence framework adds complexity for data held by Swiss entities with cross‑border operations.
• Privilege and professional secrecy. Attorney‑client privilege is recognised under Swiss law. Documents protected by professional secrecy (attorney, physician, auditor) may be excluded from production. Counsel should assert privilege claims early and specifically.
• Protective orders. Request that the Swiss authority impose conditions on the use of evidence (e.g., confidentiality rings, restrictions on onward disclosure) to protect trade secrets and commercially sensitive information.

Practical Courtroom Strategies and Client Instructions

When advising a client who must appear as a witness via videoconference for a foreign proceeding, provide clear instructions on: the scope of questions that may be asked (and the right to object to questions exceeding the scope of the request); the role of the Swiss judicial officer present; the client’s rights under Swiss law, including the right to refuse testimony on grounds of self‑incrimination; and the practical logistics of the videoconference, including identity verification and recording protocols. Preparation sessions with local counsel familiar with the cantonal implementation of the 2026 procedures are strongly recommended.

Practitioner Tools: Templates, Sample Language, and Checklists

The following resources provide a starting point for practitioners initiating or responding to cross-border evidence requests involving Switzerland. These templates should be adapted to the specific facts and jurisdictional requirements of each case, and reviewed by qualified Swiss counsel before filing.

Practitioner Checklist, Before Filing Any Evidence Request

• Identify the type of evidence needed (witness testimony, documents, inspection)
• Determine whether the evidence holder is cooperative or compulsion is required
• Select the appropriate route (Swiss 2026 simplified, Hague Convention, or direct cooperation)
• Confirm the cantonal language requirement and arrange certified translation
• Verify that the requesting court’s admissibility rules will accept the chosen procedure
• Identify the competent cantonal authority or the Swiss Central Authority
• Prepare the request letter, court order, list of questions, and any protective order
• Engage Swiss local counsel to advise on cantonal practice and to attend any examination
• Set a realistic timeline, allow four to eight weeks (simplified) or ten to twenty‑four weeks (Hague)
• Coordinate video technology and scheduling with all parties at least three weeks in advance

Sample Request Language, Simplified Mutual Assistance (2026 Route)

“The [name of court/tribunal] respectfully requests the competent cantonal authority of [Canton] to facilitate the taking of evidence in the form of [witness examination / document inspection / videoconference testimony] in connection with proceedings [case reference] pending before [court]. This request is made under the provisions of Swiss federal legislation on international judicial assistance in civil matters, as amended effective 1 January 2026. The requesting court seeks [brief description of evidence]. The witness [name, address in Switzerland] has indicated willingness to cooperate. The requesting court proposes that the examination be conducted via videoconference on [proposed date].”

Sample Cover Email to Swiss Local Counsel

“Dear [Swiss counsel], we are instructed in proceedings before [court/jurisdiction] and need to obtain [witness testimony / documents] from a person located in [Canton]. We are considering using the simplified mutual assistance route under the 2026 reforms. Could you please confirm: (1) whether the relevant cantonal authority is accepting requests under the new procedure; (2) the cantonal language requirement; (3) your availability to attend the examination as local counsel; and (4) any specific cantonal requirements for videoconference setup. We attach a draft request letter for your review.”

Conclusion and Next Steps

The 2026 reforms mark a genuine shift in how cross-border evidence in Switzerland is obtained and managed. For Commercial Litigation practitioners, the practical imperative is clear: reassess your evidence‑gathering strategy for any pending or anticipated dispute with a Swiss nexus. The new simplified procedures and videoconference options offer speed and efficiency advantages that, used correctly, can materially advance case timelines. For matters requiring formal compulsion, particularly those involving Swiss banking secrecy, the Hague Convention remains indispensable. To find a Commercial Litigation lawyer in Switzerland with expertise in cross‑border evidence matters, consult a qualified specialist without delay.

Sources

1. Swiss Federal Guidelines, International Judicial Assistance in Civil Matters (RHF/fedpol)
2. Bär & Karrer, New Rules to Facilitate Cross‑Border Civil Proceedings Effective 1 January 2026
3. Lenz & Staehelin, Taking of Evidence in Aid of Cross‑Border Civil Proceedings
4. Hague Conference on Private International Law (HCCH), Convention on the Taking of Evidence Abroad in Civil or Commercial Matters (1970)
5. Prager Dreifuss, Chambers Europe 2026: Switzerland Facilitates Taking of Evidence in Cross‑Border Civil Proceedings
6. Lex Mundi, Gathering Evidence in Aid of Foreign Litigation Guide: Switzerland
7. SwissPrivacy.law, The E‑Evidence Package and Its Implications for Switzerland