Oliver Biernat
Managing Director
German Chartered Accountant
German Certified Tax Advisor
German Certified Advisor in International Taxation
German Certified Consultant in Criminal Tax Law (WIRE)
Managing Partner, Benefitax GmbH
Phone: +49-69-25622760
info@benefitax.de
Main areas of activity
- International Tax Law
- Comprehensive advice to German units of foreign groups
- Company valuation, due diligence
- Company succession and inheritance tax structuring advice
- Advice on voluntary disclosures in cases of tax evasion
- Preparation of annual financial statements
Languages
- German
- English
- French (basic knowledge)
- Spanish (basic knowledge)
Memberships
- Vice Chair of the“International Tax Law”Practice Group at GGI Global Alliance AG
- Chamber of Public Accountants
- Hesse Chamber of Tax Consultants
- Institute of Public Auditors in Germany(IdW)
- Hesse Tax Consultants Association
- German Association for International Tax Law (German National Group of the International Fiscal Association)
- Association of Consultants in International Tax Law, Düsseldorf
- GGI Global Alliance AG’s practice groups:“M&A,”“Auditing, Reporting & Compliance,”“Corporate Governance & Compliance,”“Indirect Taxes,”“Global Mobility Solutions,”“Trust & Estate Planning,” and“Business Development and Marketing”
- Economic and Management Consulting Committee at the IHK Frankfurt/Main
- KPMG Alumni Network
- The Indus Entrepreneurs Germany- TiE (Board member and Deputy Chairman from 2019 to 2024)
- GINSEP(Ambassador)
Lectures and publications
- Do I have to report income from abroad on my German tax return? GGI FYI International Taxation Newsletter (Spring 2026)
- Tips for Avoiding Unintended Unlimited Tax Liability for a Foreign Corporation. GGI Insider 140, November 2025
- International tax treaties and double taxation challenges
- Taxable income from foreign investment funds without sale or distribution! (English)
- How to increase the net salary of employees in Germany: Tax free benefits
- Key information on International Transfer Pricing Filing Regulations in Gemany
- Global minimum tax agreement (with Ashish Bairagra and Alan Rajah)
- 10 Tax Tips You Should be Aware of Before Relocating to Germany
- New Administrative Principles “VWG 2020” on Transfer Pricing in Germany 2020, (English)
- Considerations of Financing Inbound Investments into Germany, (English)
- COVID-19 and its Effects on Transfer Prices of Routine Companies, (English)
- Extraordinary Insolvency Filing Rules Resulting from COVID-19 in Germany, (English)
- Tax Implications of Beneficiaries of Foreign Trusts Moving to Germany (English)
- Quick Overview of the International Tax Compliance Regulations in Germany
- Trading or private activity? (English)
- Donations and Inheritances
- Segmentation of loss-making activities within a company
- Tax treatment of cryptocurrencies such as Bitcoin and Co.
- Business models and concepts of consulting companies
- Practical tips for company succession – Diagnosis cancer
- Intra-group services are to be recognized even without a prior written contract
Optimizing real estate transactions for tax purposes through the acquisition of company shares, Property Journal, March 2012 - Practical experience with transfer pricing documentation in Germany
- Errors in invoicing prices can mean ruin
- Coalition negotiations exacerbate the situation for tax evaders
- International Tax and Business Guide, GGI International Taxation Practice
- How to save money with a salary split
- Selling or Expanding to Europe
- Voluntary disclosure of tax evasion
- Recent tax changes in Germany
Awards
- Benefitax GmbH Named a Kununu Top Company for 2021, 2022, 2023, 2024, 2025, and 2026
- Benefitax GmbH was recognized by the Handelsblatt as one of the “best tax advisors in Germany” in 2017, 2018, 2020, 2023, 2024, 2025, and 2026
- GGI Excellence Award
- GGI Outstanding Achievement Award
Country focus
- India
- United States & Canada
- Israel
- EU countries
- UK
- Switzerland
Voluntary commitment
- Committee “Business and Economic Consulting” of the IHK Frankfurt am Main
- The Indus Entrepreneurs Deutschland – Tie e.V. (Deputy Chairman from 2019 to 2024)