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About tailax

Who We Are

tailax is a specialised tax advisory firm based in Vienna, with a clear focus on complex tax matters. As a young firm, we combine a modern mindset with the many years of experience and in-depth expertise of our partners.

Our firm is led by three partners with complementary areas of expertise. We work as a closely coordinated team: our clients benefit not only from the expertise of their individual contact partner, but also from the combined analysis, discussion and experience of all three partners.

Personal service at the highest professional level is a core part of our approach. Every client is advised directly and personally—from the initial planning stage through to implementation. This ensures clear responsibility, consistent oversight and a high standard of quality throughout.

We deliberately focus on selected areas in which our specialisation enables us to create genuine added value. For related matters, we draw on an established network of experienced lawyers, notaries, auditors, real estate agents and valuation experts. This allows us to coordinate interdisciplinary matters efficiently, seamlessly and through a single point of contact.

Our Philosophy

  • Personal. Direct. Partner-led.

    At tailax, every engagement is personally handled by experienced tax advisers. Our clients benefit from direct access to our partners, efficient decision-making and advice that is technically sound, easy to understand and tailored to their specific circumstances.

  • Tailored Solutions, Not Standard Approaches

    Every tax matter is different. Rather than relying on off-the-shelf solutions, we develop individual concepts that are both legally robust and commercially sound. Our aim is to provide advice that is not only technically correct, but also creates genuine added value.

  • Pragmatic and Solution-oriented

    We provide clear, structured advice with a focus on what matters most. We present complex tax issues in a way that enables well-informed decisions - efficiently, with a commercial mindset and a clear focus on achieving the best outcome for our clients.

  • Specialised Tax Advice

    We focus on selected areas of specialised tax advice - from transactions, reorganisations and structuring to international tax law, transfer pricing and advice for high-net-worth individuals. In these areas, we combine technical excellence with many years of practical experience.

Florian Riha

Partner | Tax Adviser

fr@tailax.at

Florian Riha is a tax adviser with a background in law and a founding partner of tailax. He advises companies, investors and private clients, particularly on real estate transactions, tax structuring, reorganisations and complex matters of international tax law. He combines in-depth tax expertise with a strong commercial understanding and personally supports his clients from the initial analysis through to implementation.

Florian Riha

Partner | Tax Adviser

fr@tailax.at

Professional experience

Court Year (04/2018–10/2018)

Consultant/Senior Consultant at EY in the “International Tax and Transaction” department (11/2018–10/2022)

Tax Advisor at KMB Steuerberatung (11/2022–11/2023)

Tax Advisor at Dr. Bernhard Vanas Steuerberatung (12/2023–04/2025)

Partner at Putz Riha Steuerberatung (since 05/2025)

Partner at tailax (since 10/2025)

Education

Graduation from De La Salle School Strebersdorf, secondary school with a focus on modern languages

Degree in Law at the University of Vienna (Mag. iur.)

Erasmus study abroad at KU Leuven (Leuven, Belgium)

Bar exam (Chamber of Tax Advisors Vienna)

Postgraduate programme in “Tax Law and Accounting” at the University of Vienna (LL.M.)

Nikolaus Putz

Partner | Tax Adviser

np@tailax.at

As a founding partner of tailax, Nikolaus Putz combines a background in law with in-depth tax expertise, with a particular focus on start-ups and corporate structuring. His work includes reorganisations, international tax matters and the development of sustainable tax strategies for companies and investors.

Nikolaus Putz

Partner | Tax Adviser

np@tailax.at

Professional experience

Legal Trainee in the district of the Higher Regional Court of Vienna (12/2018–06/2019)

Consultant – Manager at EY in the International Tax & Transaction Services department (08/2019–11/2023)

Tax Advisor at Dr. Bernhard Vanas Steuerberatung (03/2024–04/2025)

Partner at Putz Riha Steuerberatung (since 05/2025)

Partner at tailax (since 10/2025)

Education

Graduation from Theresianische Akademie Vienna

Degree in Law at the University of Vienna (Mag. iur.)

Erasmus study abroad at Université Paris Nanterre (Paris, France)

Bar exam (Chamber of Tax Advisors and Auditors Vienna)

Postgraduate programme in “Tax Law and Accounting” at the University of Vienna (LL.M.)

Christian Strauß

Partner | Tax Adviser

cs@tailax.at

Christian Strauß is a tax adviser and founding partner of tailax, Strauß & Heim Steuerberatung and 50kn. His practice focuses on advising corporate groups, family offices, entrepreneurial families and high-net-worth individuals on tax matters. His key areas of expertise include international tax law, transactions and restructurings, corporate group taxation and transfer pricing. He advises clients on complex cross-border projects and develops practical solutions at the intersection of tax law, corporate law and business strategy.As the author of numerous professional publications, Christian Strauß regularly writes on current developments and issues in international taxation and transaction tax.

Christian Strauß

Partner | Tax Adviser

cs@tailax.at

Professional experience

Manager at LeitnerLeitner (until 07/2019)

Senior Manager at EY (08/2019–05/2023)

Partner at tailax (since 10/2025)

Partner at taxpro (06/2023–07/2026)

Partner at Strauß & Heim Steuerberatung (since 07/2026)

Education

Junior studies in Business Administration at FH Münster (Germany)

Bachelor’s degree in Business Administration (BSc), University of Münster (Germany)

Study abroad semester in International Tax Law at DePaul University Chicago (USA)

Master’s degree in Tax Law and Accounting (MSc), Vienna University of Economics and Business

Bar exam, Austrian Chamber of Tax Advisors and Auditors