Our Philosophy
About us
Grant Thornton is one of the leading firms in Austria in the fields of tax, audit and advisory. Grant Thornton Austria is a member firm of Grant Thornton International, a leading global network of audit and advisory firms with more than 80,000 employees in over 150 markets. We provide services to mid-sized businesses, family-owned companies and multinational corporations, always with the goal of creating clarity, building trusted relationships and driving entrepreneurial momentum.
With Grant Thornton, our clients have a trusted partner, giving them the confidence and peace of mind to move forward.
Christoph Zimmel, CEO & Managing Partner
3
Locations
23
Partners
250
Employees
Global feel, local touch
As a company rooted in Austria with an international orientation, Grant Thornton Austria has the greatest possible agility and flexibility, which family businesses as well as numerous national and international companies rely on.
At the same time, membership in Grant Thornton's global network always offers a personal contact person on site for cross-border activities: in Austria, in Central and Eastern Europe and in all important markets worldwide.
Industry Recognition
Awards
The awards and recognitions we receive are not only a reflection of the quality of our work, but also of our unwavering commitment to our clients. While we are proud of these accomplishments, they are most importantly a testament to the trust our clients place in us. They provide assurance that we are a reliable and high-quality partner, dedicated to delivering excellence and supporting long-term success.
Tax Consultant of the Year 2026 Real Estate & Construction
Tax Consultant of the Year 2026 "Rookie of the Year"
M&A Tax Expert of the Year in Austria 2026
Austria Tax Disputes Advisory Firm of the Year 2025
Tax Consultant of the Year 2025 Medical Professions
M&A Tax Adviser of the Year in Austria 2025
M&A Tax Adviser of the Year in Austria 2025
Best International Tax Lawyer 2025 Austria
M&A Tax Advisor of the Year in Austria 2024/25
Austria Indirect Tax Advisory Firm of the Year 2024
Austria Tax Disputes Advisory Firm of the Year 2024
M&A Tax Advisor of the Year in Austria 2024
Tax Consultant of the Year 2024 Private Clients
Tax Consultant of the Year 2024 Restructuring
M&A Tax Adviser of the Year in Austria 2024
Business Tax Adviser of the Year - Austria 2024
Due Diligence Advisor of the Year 2023
Most Influential M&A Tax Advisor 2023 - Austria
Our Certifications
Grant Thornton is a „Leitbetrieb Austria“
ISO/IEC 42001 Certification
ISO/IEC 27001 Certification
Since June 2026, we have been recognised as one of Austria’s distinguished companies. This certification reflects our commitment to sustainability, innovation, and employee development.
By achieving ISO/IEC 42001 certification, we are among Austria’s pioneers in AI management systems and are helping to shape industry standards for the responsible use of artificial intelligence.
ISO/IEC 27001 is the internationally recognised standard for information security. The combination of both standards ensures that innovation and data security go hand in hand.