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How Switzerland's Zefix Business Index Supports Live Company Diligence in 2026

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Switzerland's central business index, Zefix, aggregates cantonal commercial register records through a federal UID structure, enabling more coherent entity tracing for cross-border due diligence and AML reviews. The platform exposes key data fields including legal form, registry status, incorporation date, and corporate purpose, which can be particularly detailed for Swiss entities compared to equivalent filings in other jurisdictions. Developers and compliance teams can access this data live via the OpenRegistry MCP endpoint using standard search and profile retrieval calls. However, the system has notable limitations: it does not provide beneficial ownership data, sanctions screening, PEP matching, or historical registry snapshots. Material events during M&A diligence still require cross-referencing against SHAB publications and audited accounts, as filing depth also varies across cantons.

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