About us
Welcome to Alpers Maack & Wessel – where excellence and partnership come together.
Our approach
Experience you can build on
We have been supporting our clients as commercially responsible advisors for more than 30 years – with in-depth knowledge and extensive experience. With over 20 professionals and more than 100 employees, we ensure the highest quality and reliability on a daily basis – in both traditional and specialized tax and business consulting.
We start to find solutions when others have already given up and we promise to keep looking until we find the right one.
Thomas Maack
Graduate financial advisor, tax consultant & managing director
Vision
Take responsibility. Shape the future.
Mission
As creative structuring experts and forward-looking tax consultants and auditors, we support our clients in complex economic and tax change processes – across all sectors and generations.
Our goal is sustainable economic success: for SMEs and entrepreneurs, corporate groups and groups of companies, wealthy private individuals, family offices and investment companies.
We see ourselves as partners on an equal footing. We combine creative structuring advice with sound commercial expertise – even across national borders. Our mission is to support clients in their digital transformation and to actively shape innovation processes in tax consulting and auditing.
Sustainability is part of our firm’s attitude – and we also promote this attitude among clients, partners and employees. Through continuous further development – especially in dealing with artificial intelligence – we ensure professional exchange on an equal footing and shape the future together.
Values
Appreciation, cohesion and personal development.
Whether it’s complex structuring advice, deadlines that cannot be postponed or tax audits with the potential for friction – we take a far-sighted view, stand by our word and support you to the very end. Clients appreciate our reliability in sensitive situations – not only in the result, but also in the process.
When it comes to business, tax and strategic matters, you need partners who speak plainly rather than tactically. We communicate openly, take uncertainties seriously and stand for resilient partnerships on an equal footing – both when taking on new clients and when working together for many years.
We believe in the power of innovation û not as an end in itself, but as a lever for expedient solutions. Whether in the introduction of digital accounting processes, the use of AI-supported analysis tools or new consulting approaches: We think outside the box – and actively help shape it.
We don’t make suggestions, we make statements. We give you clear assessments, transparent recommendations for action and comprehensible results – because we know that business decisions need clarity, not legal contortions.
For us, clients are more than just a set of processes. We identify relevant tax and business issues at an early stage and introduce ideas that create real added value – long before they become standard. Clients in the SME sector in particular value our entrepreneurial mindset, our creativity and our willingness to actively take on responsibility.
We support our clients as creative structuring experts and forward-looking tax consultants with sound commercial and technical expertise – even across industry and national borders.
100+
Employees
30+
Years of in-depth knowledge & extensive experience
100%
for our clients
Managing Director
Thomas Maack
Graduate in Finance (FH) & tax consultant
Thomas Maack
Graduate in Finance (FH) & tax consultant
Has been in the profession for over 40 years, specializing in succession consulting, M&A and corporate restructuring.
Languages
English
German
Main areas of activity
- Corporate tax law
- International tax law & transfer pricing
- Succession planning: e.g. anticipated succession, wills
- Restructuring and transformation of companies
- Design consulting
- Support during tax audits
Thomas Maack
Graduate in Finance (FH) & tax consultant
Has been in the profession for over 40 years, specializing in succession consulting, M&A and corporate restructuring.
Career
- 1983 – 1986 Studies at the University of Applied Sciences for Public Administration, Department of Finance in Hamburg
- 1986 – 2001 Worked for the Hamburg tax authorities with a focus on tax audits of multinational corporations
- 2001 – 2006 Doctores Völschau, Hamburg, Partner
- 2004 – today Chairman of the Advisory Board of Doepke Schaltgeräte GmbH
- 2006 – 2011 SUSAT & Partner OHG, Hamburg
Managing Partner - 2011 – 2025 Maack & Company Steuerberatungsgesellschaft mbH
Tax consultant & managing partner - 2013 – 2025 Maack & Collegen Rechtsanwaltsgesellschaft mbH, Hamburg
Tax consultant & managing partner - 2015 – today Board of Directors of the Hamburg Chamber of Tax Consultants
- 2016 – 2025 Maack & Company Wirtschaftsprüfungsgesellschaft mbH, Hamburg
Tax consultant & managing partner - from 2025 – today AMW legal Rechtsanwaltsgesellschaft mbH
Managing Partner - from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant & managing partner
Christian Wessel
Business graduate, auditor & tax consultant
Christian Wessel
Business graduate, auditor & tax consultant
More than 30 years of experience in auditing and advising medium-sized companies, including over 25 years as an auditor and tax consultant at the interface between business administration and taxation
Languages
English German
Main areas of activity
- Carrying out audits of annual and consolidated financial statements in accordance with HGB and IFRS
- Court-appointed expert opinions on corporate actions
- Company valuations, purchase price allocations in accordance with commercial and tax law (in particular preparation of supplementary tax balance sheets)
- Tax and financial due diligence, preparation of tax and financial fact books
- Supervision of M&A transactions including purchase agreement negotiations
- Comprehensive business consulting for medium-sized companies
- Supervision of tax audits
Christian Wessel
Business graduate, auditor & tax consultant
More than 30 years of experience in auditing and advising medium-sized companies, including over 25 years as an auditor and tax consultant at the interface between business administration and taxation
Career
- 1988 – 1994: Saarland University, studied business administration with a focus on auditing and business taxation/tax law, graduated with a degree in business administration
- 1994 – 1998: PwC Hamburg
Audit assistant and audit manager for medium-sized companies - January 1998 Tax consultant
- January 2000 Auditor
- 1998 – 2000: Schomerus und Partner Hamburg
Auditing and consulting for medium-sized companies - October 2000 – 2025: Alpers & Stenger (since February 2013 Alpers & Wessel)
Partner since 1.1.2008
Managing Director since 2012 - 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Auditor, Tax Consultant & Managing Partner
Marvin Feldmann
Business graduate & tax consultant
Marvin Feldmann
Business graduate & tax consultant
Over 15 years in the profession with a focus on structuring and taxation of private equity and venture capital funds, M&A and real estate transactions.
Languages
English German
Main areas of activity
- Tax structuring of private equity and venture capital funds
- Current taxation of domestic and foreign private equity and venture capital funds
- Taxation of crypto assets
- Tax support for company acquisitions (M&A)
Advice on structuring real estate transactions
Marvin Feldmann
Business graduate & tax consultant
Over 15 years in the profession with a focus on structuring and taxation of private equity and venture capital funds, M&A and real estate transactions.
Career
- 2004 – 2011 Studies at the University of Hamburg, Faculty of Economics
- since 2008 – 2019: tax associate at Alpers & Wessel, Hamburg
- 2014 Appointment as tax consultant
- 2019 – 2025 Alpers & Wessel Steuerberatungsgesellschaft mbH, Hamburg
Tax consultant & managing partner - from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant & managing partner
Alena Grin
Tax consultant, lawyer & specialist lawyer for tax law
Alena Grin
Tax consultant, lawyer & specialist lawyer for tax law
Over 10 years in the profession with a focus on succession consulting and company restructuring
Languages
English German
Russian
Main areas of activity
- Corporate tax law
- International tax law & transfer pricing
- Succession planning: e.g. anticipated succession, company succession, tax support in the context of M&A processes
- Restructuring and transformation of companies
- Design consulting
- Support during tax audits
Alena Grin
Tax consultant, lawyer & specialist lawyer for tax law
Over 10 years in the profession with a focus on succession consulting and company restructuring
Career
- 2003 – 2008 Studies at the University of Hamburg, Faculty of Law
- 2009 White & Case LLP, Hamburg, Research Associate
- 2010 – 2012 Legal clerkship in Schleswig-Holstein
- 2012 – 2016 Völker Rechtsanwälte, Hamburg, attorney at law
- 2016 Appointment as tax consultant
- 2016 – today Maack & Company Steuerberatungsgesellschaft mbH, Hamburg
Tax consultant, lawyer & specialist lawyer for tax law - 2016 Appointment as a specialist lawyer for tax law
- 2018 – 2025 Maack & Company Steuerberatungsgesellschaft mbH, Hamburg
Tax consultant, lawyer, specialist lawyer for tax law & managing partner - from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant, lawyer, specialist lawyer for tax law & managing partner
Diana Krüger
Graduate in Finance (FH) & tax consultant
Diana Krüger
Graduate in Finance (FH) & tax consultant
Following my previous work in financial administration/federal tax auditing, I specialized in providing tax advice to corporate groups. My focus is on tax structuring, supporting restructuring and M&A transactions, handling difficult tax audit cases and providing ongoing support to corporate groups. I love taking on new challenges and developing creative solution strategies.
Languages
English German
Main areas of activity
- Design consulting
- Tax advice and restructuring of companies, including reorganizations
- Tax advice on M&A transactions incl. due diligence
- Support during tax audits
- Support in fiscal court proceedings
- Ongoing support for groups of companies in the area of annual financial statements and tax returns
Diana Krüger
Graduate in Finance (FH) & tax consultant
Following my previous work in financial administration/federal tax auditing, I specialized in providing tax advice to corporate groups. My focus is on tax structuring, supporting restructuring and M&A transactions, handling difficult tax audit cases and providing ongoing support to corporate groups. I love taking on new challenges and developing creative solution strategies.
Career
- 2006 – 2009 Apprenticeship as a businesswoman for tourism and leisure
- 2009 – 2011 Worked for the Kaiserbäder Insel Usedom in event management and accounting
- 2011 – 2014 Dual study program in the financial administration of Mecklenburg-Western Pomerania (senior civil service)
- 2014 – 2015 Worked at the Federal Central Tax Office in the federal tax audit department
- 2015 – 2022 Employment at WLP GmbH WPG/StBG
- Appointed as a tax consultant since 2019
- 2022 – 2025 Employment at Alpers & Wessel WPG/StBG
- 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant & managing partner
Stefanie Loos
Graduate in Finance (FH), tax consultant & lawyer
Stefanie Loos
Graduate in Finance (FH), tax consultant & lawyer
After leaving the tax authorities, he has been working for more than 15 years on an interdisciplinary basis at the interface between law and tax, focusing on succession advice as well as tax court litigation and defense advice.
Languages
English German
Main areas of activity
- Advice on structuring both in the corporate sector and for private clients
- Tax support for corporate transactions (M&A)
- Succession planning: e.g. anticipated succession, testamentary succession
- Restructuring and transformation of companies
- Support in fiscal court proceedings in all instances; support in criminal tax proceedings
Stefanie Loos
Graduate in Finance (FH), tax consultant & lawyer
After leaving the tax authorities, he has been working for more than 15 years on an interdisciplinary basis at the interface between law and tax, focusing on succession advice as well as tax court litigation and defense advice.
Career
- 2000 – 2003 Senior career in the NRW tax authorities
- 2003 – 2008 Studied law at the Ruhr University Bochum
- 2008 – 2010 Legal clerkship at Bochum District Court
- 2011 – 2012 BRL PartG, Hamburg, attorney at law
- 2012 Appointment as tax consultant
- 2012 – 2013 Deloitte & Touche GmbH, Düsseldorf
Lawyer and tax consultant in the M&A Tax Team - 2014 – 2017 KÜMMERLEIN Attorneys at Law & Notaries, Essen
- 2017 – 2019 Dr. Ganteführer, Marquardt & Partner mbB, Düsseldorf
Lawyer and tax consultant - 2020 – 2025 WUTHOLD & BRAUN Rechtsanwälte und Steuerberater Partnerschaftsgesellschaft mbB, Recklinghausen
2020 – 2022 Lawyer and tax consultant
2022 – 2025 Partner - 2025 Alpers & Wessel Steuerberatungsgesellschaft mbH, Hamburg
Tax consultant, lawyer & managing partner - from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant, lawyer & managing partner
Marcel Meyer
Business graduate, auditor & tax consultant
Marcel Meyer
Business graduate, auditor & tax consultant
17 years in the profession, head of the audit department at Alpers & Wessel for 10 years; responsible, pragmatic and curious; special expertise in group accounting and accounting/auditing of partnerships. Focus on manufacturing industry and service companies
Languages
English German
Main areas of activity
- Audits of annual and consolidated financial statements in accordance with HGB and IFRS, focus on owner-managed SMEs, PE/VC companies
- Preparation of consolidated financial statements in accordance with HGB and IFRS, software-supported with LucaNet and CP Cons; focus on complex group structures
- Company valuation
- Financial due diligence (sell/buy side) and financial fact books
- Business management support for M&A transactions
Marcel Meyer
Business graduate, auditor & tax consultant
17 years in the profession, head of the audit department at Alpers & Wessel for 10 years; responsible, pragmatic and curious; special expertise in group accounting and accounting/auditing of partnerships. Focus on manufacturing industry and service companies
Career
- 2002 – 2008 Studies at the Universities of Bremen and Oldenburg, Faculty of Economics
- 2008 – 2025 Employment at Alpers & Wessel (and predecessor companies)
- 2012 Appointment as tax consultant
- 2015 Appointment as auditor
- 2015 – 2025 Shareholder (initially in WPG)
- 2018 – 2025 Managing Director (initially in WPG)
- from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Auditor, Tax Consultant & Managing Partner
Pia Schleder
Tax consultant & lawyer
Pia Schleder
Tax consultant & lawyer
Active in the field of tax declaration for over 30 years
Languages
English German
Main areas of activity
- Preparation of annual financial statements and company tax returns
- Expertise in the field of payroll accounting
- Advising small and medium-sized companies, portfolio companies of private equity funds as well as wealthy private individuals and clients of family offices
Pia Schleder
Tax consultant & lawyer
Active in the field of tax declaration for over 30 years
Career
- 1992 – 1994 Training as a tax assistant in Munich
- 1994 – 2002 Law studies and legal clerkship in Regensbug
- 2002 – 2009 various professional positions
- since 2007 as tax consultant
- since 2010 – 2025 with Alpers & Stenger (since 2013 Alpers & Wessel),
from 2015 as tax consultant, lawyer & managing partner - from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant, lawyer & managing partner
Susanne Schmuck
Business graduate, auditor & tax consultant
Susanne Schmuck
Business graduate, auditor & tax consultant
I have been working in auditing and tax consultancy for over three decades. In addition to the traditional audit of annual financial statements, the audit of consolidated financial statements has become a central focus of my work. Clients benefit from holistic support that includes both auditing services and comprehensive tax advice – including support during tax audits.
Languages
English German
Main areas of activity
- Audits of annual and consolidated financial statements in accordance with HGB, especially for owner-managed, internationally active companies
- Valuations for various reasons (company valuation due to sale, company succession or for tax purposes)
- Financial due diligence investigations
- Impairment certificates
- Support during tax audits
Susanne Schmuck
Business graduate, auditor & tax consultant
I have been working in auditing and tax consultancy for over three decades. In addition to the traditional audit of annual financial statements, the audit of consolidated financial statements has become a central focus of my work. Clients benefit from holistic support that includes both auditing services and comprehensive tax advice – including support during tax audits.
Career
- 1984 – 1989 Studied business administration at the University of Hamburg, graduating with a degree in business administration
- 1989 – 1993 Worked for KPMG in the auditing department
- 1993 Appointment as tax consultant
- 1995 Appointment as auditor
- 1993 – 2004 Worked for Doctores Völschau, Hamburg
- 2004 – 2016 Partner at Doctores Völschau, Hamburg
- 2016 – 2025 Maack & Company Steuerberatungsgesellschaft mbH, Hamburg
Auditor, tax consultant & managing partner - 2016 – 2025 Maack & Company GmbH Wirtschaftsprüfungsgesellschaft, Hamburg
Auditor, tax consultant & managing partner - from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Auditor, tax consultant & managing partner
Sandra Wichern
Tax consultant
Sandra Wichern
Tax consultant
For more than 30 years active in the field of tax declaration for medium-sized companies. For over 10 years with a focus on the taxation of private equity and venture capital funds
Languages
English German
Main areas of activity
- Ongoing support for groups of companies in the area of annual financial statements and tax returns
- Current taxation of private equity and venture capital funds
- Expertise in the field of value added tax
- Support for portfolio and management companies of private equity funds
- Support for small and medium-sized companies and freelancers
- Real estate management
Sandra Wichern
Tax consultant
For more than 30 years active in the field of tax declaration for medium-sized companies. For over 10 years with a focus on the taxation of private equity and venture capital funds
Career
- 1991 – 1993 Training as a tax assistant in Hamburg
- Tax specialist since 1999
- with Alpers & Stenger since 1998 (Alpers & Wessel since 2013)
- since 2002 as tax consultant
- 2019 – 2025 as tax consultant & managing partner
- from 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant & managing partner
Xun Zhang
LL.M. & Tax Consultant
Xun Zhang
LL.M. & Tax Consultant
In the profession for over 10 years; focus on German companies with Asian parent companies with an industry focus: Real estate, manufacturing & high-tech companies
Languages
Chinese & Cantonese English German
Main areas of activity
- Audits of annual financial statements in accordance with HGB and IFRS, audits of consolidated financial statements in accordance with HGB and IFRS
- Tax and business consulting for Chinese state-owned and capital market-oriented groups
Xun Zhang
LL.M. & Tax Consultant
In the profession for over 10 years; focus on German companies with Asian parent companies with an industry focus: Real estate, manufacturing & high-tech companies
Career
- 2010 – 2013 Studies at the Albert-Ludwigs-University of Freiburg (Economics)
- 2013 – 2015 Studies at the Ruhr University Bochum (business and tax law)
- 2015 – 2020 Certis GmbH Wirtschaftsprüfungsgesellschaft, Hamburg
- 2020 Appointment as tax consultant
- 2020 – 2025 Alpers & Wessel, Hamburg
- 2025 – today Alpers Maack & Wessel GmbH, Hamburg
Tax consultant & managing partner
CAREERS
For those who want more than just a job
Are you looking for a new professional challenge and want to make a difference? Become part of a team that truly lives cohesion and togetherness. At Alpers Maack & Wessel, we shape the future together – with trust, openness and a genuine team culture. Every voice, every idea, every contribution counts here. We take responsibility for each other and for our projects – and celebrate successes together. Because we work as equals – and grow with every person who becomes part of our team.
Personal. Competent. Approachable.
Find out more about how we can support you in your case.