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Dr. Guido Holler

Guido Holler is a founding partner and managing partner of H&W. He is a specialist lawyer for tax law and a specialist lawyer for inheritance law.

Guido Holler advises H&W’s clients on all legal matters, in particular with regard to inheritance and tax law issues. Inheritance law issues often involve tax-optimised structuring of asset transfers, including anticipated successions. In this context, tax valuation law also plays an important role.

In addition, his focus is on procedural law, in particular in the context of objection and legal action proceedings.

Guido Holler studied law at the University of Heidelberg. He completed his legal traineeship in Constance. At the University of Constance, he wrote his doctoral thesis on the topic of “Changing the method of determining profits in income tax law”. During his traineeship, he also worked for three months in London at the internationally active auditing firm BDO Hamlyn.

After working in the tax department of KPMG in Düsseldorf, Guido Holler joined the law firm TIGGES Rechtsanwälte in 1992. Until the end of 2020, he was a partner in the internationally active law firm TIGGES Rechtsanwälte.

Guido Holler is a lecturer at the German Tax Advisor Institute (DStI) in the area of inheritance tax law. Here he trains tax advisors in the course for the specialist advisor for business succession in the area of “inheritance and gift tax”. He is also a lecturer within the framework of the compulsory further training courses for the specialist advisers for business succession as well as for the specialist advisers for execution of wills and estate administration.

He also lectures on procedural law for the Düsseldorf Tax Consultants Association, in particular on fiscal court proceedings.
Guido Holler is the regional representative of the Working Group on Inheritance Law in the German Bar Association for the Düsseldorf Higher Regional Court District. He organises the “Jour fixe of inheritance and inheritance tax law” once a month in Düsseldorf for all those interested in the topic. He is also a member of the preliminary examination committee for the specialist solicitor for inheritance law of the Düsseldorf Bar Association.

In addition, he regularly publishes in specialist journals on all relevant topics of inheritance tax law.

German, English

Dr. Guido Holler, Gründungspartner und geschäftsführender Gesellschafter der H&W
Ira Will, Gründungspartnerin und geschäftsführende Gesellschafterin der H&W

Ira Will

Ira Will is a founding partner and managing partner of H&W. She is a certified public accountant, tax advisor and specialist consultant for international tax law.

Ira Will focuses on advising medium-sized clients and private individuals, foundations and non-profit organisations. In addition to traditional tax advice and the preparation of annual financial statements, income and surplus statements and the corresponding tax returns, further specialisations include advice in the areas of inheritance and gift tax, including the necessary valuation law, and international tax law.

The majority of these clients are internationally active. Therefore, Ira Will has experience in cross-border tax structuring for companies and private individuals, inter alia, with regard to residency, foreign income and taxation of moving in and out of the country.

Ira Will studied business administration in Münster and then worked in the auditing department at KPMG Düsseldorf from 1990 to 1995. During this time she was an expatriate in Paris for 1½ years in the area of reconciliation of the French commercial balance sheet to the German commercial balance sheet. In March 1995 she successfully passed her examination to become a tax consultant and moved to Treuhand und Revisions AG Niederrhein in Krefeld.

In February 1998 she was publicly appointed as an auditor. From May 2001 to May 2006 she worked as a tax consultant and auditor in her own office. She then moved to the law firm TIGGES Rechtsanwälte. Here she was a partner from 2012 until her retirement at the end of 2020 and managed HOW Steuerberatungsgesellschaft mbH as managing director. In October 2020, she acquired the title of “Specialist Advisor for International Tax Law”.

Ira Will has been a managing partner of H&W Partnerschaftsgesellschaft mbB since 1 January 2021.

German, English, French

Selda Gencer, Steuerassistentin

Selda Gencer

Tax assistant

German and Turkish

E-mail gencer@h-w.tax
Phone +49 (0)211 540 10 540
Fax +49 (0)211 540 10 550

Sonja Tillmann, Steuerfachangestellte

Sonja Tillmann

Assistant tax consultant

German and English

E-mail tillmann@h-w.tax
Phone +49 (0)211 540 10 540
Fax +49 (0)211 540 10 550

Yuexian Wu, Steuerassistentin

Yuexian Wu

Tax assistant

German and Chinese

E-mail wu@h-w.tax
Phone +49 (0)211 540 10 540
Fax +49 (0)211 540 10 550

Maria Ter-Ghukasyan, Rechtsfachwirtin

Maria Ter-Ghukasyan

Legal administrator

German and English

E-mail ter-ghukasyan@h-w.tax
Phone +49 (0)211 540 10 555
Fax +49 (0)211 540 10 550

Limited availability

Due to server maintenance, our accessibility by e-mail is unfortunately limited until May 2, 2023.

Please call us in urgent cases:

+49 (0)211 540 10 540