Altehoefer – Internationale Steuerberatung

We are experts in international tax law

With many years of experience, the Altehoefer firm specialises in providing comprehensive advice and support to national and international clients. We use our business expertise to offer support that is tailored to your needs and to minimise your tax burden.

Our wealth of experience means that you will be able to benefit directly from new laws and regulations at both the national and international level. This will give you a solid foundation on which to do business, preserve your assets and protect yourself against any potential risks in good time.


We have assisted businesses, self-employed persons, partnerships and companies with complex taxation issues for decades, offering them comprehensive solutions.


Our legal and business experts work in interdisciplinary teams to find solutions for our clients, looking at the business as a whole.


With a wide range of contacts in various countries and our links to institutions and professional associations, we are continuously working to further develop our expertise.


We provide you with expert, professional support in meeting your ongoing tax obligations, as well as for your long-term commercial and strategic planning.

We use our IT expertise to create and maintain databases for complex projects and ensure that even large volumes of data can be managed correctly. The IT structure in place at the Altehoefer firm is interface-tested and allows data to be processed securely.

Whether your company has a long history behind it or you are planning a new venture, we will guide you in the right direction. We apply a transparent fee structure and never lose sight of your time management or your liquidity.

International tax law

The increasing internationalisation of business activity raises particular tax challenges for companies and entrepreneurs. Tax-saving opportunities need to be exploited and double taxation avoided wherever possible.

  • Foreign income from capital assets

  • External auditing with international issues

  • Taxation of business establishments

  • Exemption procedures

  • Inbound structures

  • Outbound structures

  • Subsequent declaration of foreign income

  • Choice of legal form

  • Choice of location for holding structures

  • VAT

  • Business transformations

  • Wealth, retirement and succession planning

  • Transfer prices

National tax law

The Altehoefer firm focuses on specialist areas within tax law, and therefore has the expertise required to ensure that the advice you receive as a client is of the highest standard. Our business-minded approach and professional advice enable us to deliver a tax solution tailored to your specific requirements and minimise your individual tax burden.

  • Tax audits

  • Business consulting

  • Income from capital assets

  • Financial accounting

  • Assessment of profits

  • Property tax

  • Real estate transfer tax

  • Annual financial statements

  • Payroll and salary accounting

  • Individual tax returns

  • Investment and financial advice


In addition to individuals, foundations and associations, the Altehoefer firm advises partnerships and companies from a range of sectors.

Examples include:

  • Doctors

  • Data service providers

  • Financial services providers

  • Property companies

  • Credit institutions

  • Media companies

  • Distribution firms and branches


In our magazine we explain current developments in tax legislation, selected judgments of the fiscal courts, and statements issued by the financial authorities. We will be happy to discuss any questions you may have on these subjects.

Separate taxation rate

Separate taxation available for same-sex married couples

Joint assessment may be possible for same-sex married couples, including for previous assessments dating back to 2001. In the view of the Hamburg fiscal court, as a non-fiscal law, the marriage equality act can be considered to be an event with retroactive effect on taxation as defined by the German Fiscal Code. This would justify a retroactive change to income tax returns finalised since 2001. The court has permitted an appeal to the Federal Fiscal Court, which has already been lodged (BFH III R 57/18). No ruling has yet been made by the Court.

Duty of disclosure

EU to require the disclosure of information on cross-border tax arrangements

The EU Commission has obligated Member States to disclose information on some cross-border tax arrangements. This duty of disclosure is to be effectively transposed into national law by 1 July 2020 (Directive (EU) 2018/822 of 25 May 2018) and must also extend retroactively to arrangements introduced from 25 June 2018. If the German draft legislation from two federal states is implemented throughout Germany, we can expect significant uncertainty to arise in the implementation of this legislation. The Altehoefer firm will monitor further developments closely.

Sale of shares

Judgment: Consideration of losses when selling shares

The German Federal Fiscal Court has corrected the view of the tax authorities, according to which the tax treatment of losses from the disposal of shares does not depend on the costs of disposal. Even if the costs of disposal exceed the amount of the consideration, a loss must be recognised for tax purposes for the private investor (judgment of 12 June 2018 VIII R 32/16). This ruling also amends the approach taken by many German custodian banks, which have not always included such losses in loss compensation calculations due to the requirements of the financial authorities.


Tax consulting is a matter of trust. At the Altehoefer firm, providing you with individual advice is our priority. In addition to specialist knowledge and a professional approach, we offer a personalised service, and work in a structured and efficient manner to achieve your objectives. Our process-oriented advice takes into account the company and the environment in which it operates as a whole.

The owner

Dagmar Altehoefer

The Altehoefer firm has been located in Mannheim for 20 years. Dagmar Altehoefer founded her tax firm in an office shared with her father, who ran an established law firm.

Dagmar Altehoefer gained many years of experience in all of the main fields of German and international tax legislation while working at PriceWaterhouse GmbH in Frankfurt. During this time, her main focus was on corporate and bank taxation.

After just four years there, she was appointed to the role of tax manager at PricewaterhouseCoopers AG WPG. She holds degrees in economics and in social and political sciences from the University of Mannheim.

As a certified adviser in international tax law, Dagmar Altehoefer is a member of the International Fiscal Association (IFA) and the German VAT association.

Dagmar Altehoefer

Certified International Tax Law Consultant

Annalena Bender

Master of Arts (M.A.) International Accounting and Taxation

Ziynet Deniz

Certified Accountant

Lilianna Koterba

Assistant Tax Consultant

Jinlu Li

Master of Business Administration (MBA)

Regine Mühl

Tax Consultant

Sybille Nasebandt-Msechu

Certified Accountant

Elvira Riegel

Office Assistant

Hristina Salamone

Bachelor of Arts (B.A.) Business Taxation and Auditing

Caroline Salge

Tax Consultant

Christina Schellhammer

Legal assistant

Carmela Sama

Tax Assistant

Alena Spitzendobler

Graduate in Business Management (BA)

Claudia Zabel

Tax Consultant


In addition to specialist skills and professionalism, the Altehoefer firm offers its clients dedicated support on a personal level. This depends largely on the personality and expertise of the adviser, enabling you to make a significant contribution to the success and reputation of the Altehoefer International firm.

If we have aroused your interest, we look forward to receiving your application.


Current vacancies

Trained assistant

We are looking for a trained assistant at the earliest possible date, to support our team with drive and motivation.

Please send your application documents, indicating the earliest date you could start and your salary expectations, to the following address:

  • Altehoefer
  • Internationale Steuerberatung
  • Haus Oberrhein
  • Rheinvorlandstraße 5
  • D-68159 Mannheim

Working student

We are looking for a working student to join us as soon as possible. We offer the opportunity to put your theoretical knowledge into practice.

Please send your application documents, indicating the earliest possible date you could start, to the following address:

  • Altehoefer
  • Internationale Steuerberatung
  • Haus Oberrhein
  • Rheinvorlandstraße 5
  • D-68159 Mannheim


You can contact us via the form below.

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Internationale Steuerberatung
Haus Oberrhein
Rheinvorlandstraße 5
D-68159 Mannheim

Phone +49 (0) 621 328 38-0
Fax +49(0) 621 41 34 04

Free parking in front of the house