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Contact Person:

Hans-Jörg Wittmann
Thomas Löwer

+49 (0) 211 30143-0
+49 (0) 211 30143-143
Martin-Luther-Platz 26
40212 Düsseldorf
  • Hans-Jörg Wittmann
  • Thomas Löwer

Languages & services


ADVISES helps corporate clients address the legal, accounting and tax aspects involved in doing business. Our services cover not only the ongoing counsel and representation required in the course of the conduct of everyday duties and responsibilities, but also include the in-depth advice it take to successfully implement major transactions.

Legal advice

  • Corporate
    • Incorporation and ongoing legal counsel
    • Changes of legal form and liquidation, mergers, transformations and reorganization, restructuring, recapitalization …
  • Acquisitions
    • Share/asset purchase deals
    • Management buyouts/buyins
    • Venture capital
    • Private equity
    • Design of financial structures for acquisitions, including hybrid financing
    • Leasing agreements, national and cross-border
  • Closed-end funds
    • Design and creation of investment companies, including in particular closed-end funds
    • Advice in connection with the preparation of prospectuses for initial public offerings
    • Advice in connection with filing for approval of fund structures and prospectuses
    • Advice in connection with regulatory issues
  • Contract law
    • General contracts
    • Articles of incorporation, bylaws
    • Agreements with commercial agents
  • Real estate law
    • Real estate transactions
    • Leases
  • Company succession
    • Planning
    • Management
  • Insolvency law
    • Preinsolvency advice
    • Creditor assistance and support
    • Crisis management


We regularly advise our clients in the following areas:

  • Financial due diligence
  • Management controls, management information systems
  • Benchmarking, comparisons of costs, performance, financing and salaries
  • Efficiency analysis, investment decision-making
  • Change management (business process reengineering)
  • Development, implementation and evaluation of restructuring plans and strategies

ADVISES GmbH Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft also offers a complete array of auditing/accounting services.

Tax accounting

  • Corporate strategy
    • Corporate reorganization
    • M&A and private equity
    • Leasing agreements
    • Tax-efficient structuring of funds
    • Company succession
    • Real estate transactions
    • Company pension plans and profit-sharing models
  • Tax planning
    • Tax calculations
    • Development and implementation of optimal tax strategies
    • Tax aspects of company succession
  • International business
    • International tax issues, including in particular application of double taxation treaties and agreements
    • Cross-border issues, including in particular transfer prices and taxation of permanent business establishments of foreign entities
    • Taxation of foreign income
    • International tax planning
  • Ongoing tax advice
    • Tax declarations
    • Negotiations with tax authorities
    • Filing of applications
    • Review of tax assessments
    • Customs issues
    • succession issues
    • Assistance with tax audits
  • Assistance in tax proceedings and disputes
    • Appeals
    • Representation in proceedings before tax courts
  • Valuations and expert opinions
    • Appraisals and valuations required in connection with mergers, reorganizations, capital increases, litigation, disposals, …
    • Expert opinions on issues related to accounting and taxation
    • Evaluation of fiscal aspects of agreements, including in particular articles of incorporation and similar instruments
    • Evaluation of fiscal aspects of investments (closed funds)
  • Accounting and financial statements
    • Analysis, design, development and implementation of accounting systems
    • Ongoing bookkeeping and accounting
    • Preparation of annual financial statements in accordance with German and international generally accepted accounting principles
    • Monthly and year-end closing assistance
    • Preparation of interim financial statements
    • Other accounting services, including in particular ongoing control of accounting systems created and managed by clients, analysis for management, reports to parent organizations, …