The SMART Treuhand acquisition of three Basel fiduciary and auditing companies has been completed, SMART Holding AG announced in October 2026. The transaction is intended to provide a succession solution for Streicher & Brotschin.

Key Takeaways

  • The acquisition includes Streicher & Brotschin Treuhand AG, Streicher & Brotschin Revision AG and AEQUITAS AG.
  • Board members Charles Tissier and Michel Rohrer will remain involved and retain an equity stake.
  • The purchase price was not disclosed.

SMART Treuhand acquisition and client arrangements

SMART Holding AG completed the purchase of the three Basel companies. Streicher & Brotschin Treuhand has provided fiduciary, tax, auditing and advisory services in the Basel region since 1927.

Michel Rohrer, a board member of Streicher & Brotschin Treuhand, said existing client contacts would remain available under the same terms and conditions. He said he and fellow board member Charles Tissier would stay on and retain an equity stake.

How the firms fit into SMART

SMART Holding is a portfolio company of Schweizer Treuhand Holding AG, which is managed by Winterberg Advisory GmbH. SMART was founded in 2017 and has acquired and integrated other fiduciary and auditing firms.

The group says it has almost 100 employees across nine locations and primarily serves small and midsize businesses and private individuals. Its services include accounting, payroll, tax, auditing and advice on digitalization and process optimization.

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