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From March 2022

Warth & Klein Grant Thornton will become Grant Thornton

Düsseldorf, 2. November 2021 

  • Rebranding on 1 March 2022
  • Logical next step of the growth strategy
  • Focus on stronger growth of internationally operative SMEs

On 1 March 2022, the auditing and advisory company, Warth & Klein Grant Thornton AG, will be renamed Grant Thornton AG. The company was founded in 1958 and joined the Grant Thornton network in 2001; several mergers over the past years subsequently followed. This rebranding is just the next logical step in the company's growth strategy.

A sign to international SMEs

German SMEs are becoming increasingly active in a globally connected world. This means that their auditors and advisers have to be able to provide reliable support for projects in all the world's important markets. As the German member firm of the global Grant Thornton network, this has been one of the strong points of Warth & Klein Grant Thornton for over 20 years. "We are now focusing even more on the internationally operative SMEs: A clear indication of this will be the rebranding in spring 2022 when Warth & Klein Grant Thornton will also become Grant Thornton in Germany," explains Michael Häger, CEO of Warth & Klein Grant Thornton.

Further expansion under a new brand

Under the new brand, Grant Thornton remains committed to organic market growth but also intends to continue its focus on strategic integration of new teams in key economic hubs throughout Germany - a practice which has been instrumental in the firm becoming one of the leading audit and advisory providers in the country.

About Warth & Klein Grant Thornton

Warth & Klein Grant Thornton is one of the ten largest auditing companies in Germany. The company is the German member firm of Grant Thornton International Ltd. The Grant Thornton network has more than 58,000 employees at over 700 locations in around 140 countries who provide consulting services to companies all over the world.

In Germany, over 1,500 employees at eleven locations are in charge of the large SME sector as well as publicly listed companies. Warth & Klein Grant Thornton traditionally focusses on Audit & Assurance, Tax, Advisory, Business Process Solutions, Legal, and Private Finance.


Susanne Gehrling
Head of Corporate Communications
+49 69 905598 617