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Our auditors help you achieve your business objectives. A significant part of our work involves auditing separate and consolidated financial statements of larger and global mid-sized firms or family businesses. In addition, our work includes auditing subsidiaries of international groups as well as public sector enterprises and foundations.

In our audits, we always focus on understanding your individual business processes and on the informative value of your reports. Besides our pure audit work, we view ourselves as a sparring partner that can offer ideas to management and the supervisory board and as a trusted partner for your business. Accordingly, we analyse your business from the standpoint of the decision-makers or those that prepare the decisions.

With our transaction advisory team, we offer private equity and investment firms a particular partnership. We assist you prior to, during and after a transaction, advise you when you make decisions and support you in structuring and implementing a transaction.

Internationally, we cooperate with DFK International – a globally organised association of independent audit and consulting firms. This enables us to offer you services of the highest quality even in cross-border engagements.

We offer you a partnership based on trust.

Examples of our advisory expertise

  • Statutory and voluntary separate and consolidated audits under German standards (HGB) and IFRS
  • Corporate transactions / M&A projects (financial and tax due diligence, business valuations, determining methods and models to calculate a purchase price)
  • Compliance audits and further special audits (forensic examinations and fraud audits, compliance and process audits)
  • Handling business transfers (buying and selling of companies, restructurings, changes among shareholders or partners, advising on management buy-outs and buy-ins)
  • Performing IT audits (IT systems audit, software selection and software introduction processes, IT due diligence, IT forensic services)
  • Certification of Compliance systems in accordance with IDW PS 980

Further areas of advice

  • Preparing business valuation opinions in arbitration proceedings
  • Organising international reportings, preparation of reports and consolidations
  • Advising on introduction of IFRS
  • Setting up reporting systems
  • Consolidation organisation and projects
  • Controlling and risk management
Your contact person
Bernhard Winterstetter

Drummer and "Hutzenbauer".

Qualification as public auditor and tax consultant. He worked as a manager in the audit department of Peat, Marwick, Mitchell & Co (now KPMG) in Munich. In 1982, he teamed up with Dr. Jürgen Peters and Christopher Schönberger.

Stephan Nowack

Skier and mountain biker.

Qualification as public auditor and tax consultant. He started his career in 1993 in Deloitte's audit department in Frankfurt and joined Peters, Schönberger & Partner in 1998.

Andreas Vogl

Pianist and skier.

Qualification as public auditor and tax consultant. He began his career at Peters, Schönberger & Partner in 1999.

Die Wirtschaftsprüfer der interdiziunterstützen Sie dabei, Ihre unternehmerischen Zielsetzungen zu verwirklichen.
Über die reine Prüfungstätigkeit bei Jahresabschlüssen hinaus versteht sich die interdisziplinäre Kanzlei PSP München als Sparringspartner und Ideengeber für Geschäftsführung und Aufsichtsrat!
Portraitbilder der PSP-Ansprechpartner für den Bereich Wirtschaftsprüfung mit Bernhard Winterstetter.