Creator
Dipl.-Kfm.Stephan Mauer
Stephan Mauer teaches how internal control, risk and compliance systems are built so that they hold up when an auditor tests them. He is a Wirtschaftsprüfer and Steuerberater in practice, and has audited annual and consolidated accounts under HGB and IFRS, run internal audit and IT audit in mid-sized groups and hospitals, and carried out Sarbanes-Oxley 404 work with network partners in the UK and the US. He works on compliance and risk management systems, corporate governance assessments, CSRD and ESRS sustainability reporting, and special audits with a fraud focus. He is a Certified Compliance Manager, holds supervisory and advisory board seats, and has taught auditing, consolidated accounts analysis and tax law at DHBW since 2012.
- Based in
- Reutlingen, Germany
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Background
Experience and context
Education and professional work that shape this creator's modules.
Education
- Diplom-Kaufmann in business administration, University of Tübingen
Studied from 1987 to 1992.
Industry
- Restructuring, over-indebtedness testing and IDW S6 opinions
Turnaround management and restructuring advice, including the going-concern and over-indebtedness assessments that underpin an IDW S6 opinion.
- Management buy-outs, buy-ins and succession
- Operational and strategic reporting systems
Builds the reporting layer that lets a management team decide from its own numbers.
- Tax structuring advice for companies and private clients
- Sector experience
Biotech, software and multimedia, media, retail, print, health care, logistics, textiles, automotive and recycling.
- Health care focus: hospitals and clinics
Internal audit, risk management and tax law for hospital groups and clinics.
- Advising start-ups from their early phase
Ingmar Hoerr, founder of CureVac, has publicly named him as the company's first capable tax adviser in its early phase.
Qualifications
- Wirtschaftsprüfer and Steuerberater in practice
Both professional examinations passed; additionally Certified Compliance Manager, Steinbeis-Hochschule Berlin, January 2020.
- Professional examinations and certificates
Wirtschaftsprüfer examination, Steuerberater examination, Certified Compliance Manager at Steinbeis-Hochschule Berlin in 2020, and certified hospital risk manager to the DKI standard in 2013.
Certifications
- Certified hospital risk manager to the Deutsches Krankenhausinstitut standard
Held since 2013.
Career
- Supervisory board and advisory board mandates
Fellow board members credit him with reading the state of a business quickly and connecting the finance, tax and compliance questions.
- Lecturer in tax law, health management degree programme, DHBW Stuttgart
Teaching since September 2023.
- Lecturer in auditing and consolidated accounts analysis, DHBW Villingen-Schwenningen
Taught from 2012 to July 2023.
- Partner, Auren Deutschland, Reutlingen
Wirtschaftsprüfer and Steuerberater; since January 2026.
- Founder and managing partner of the Mauer group of audit and tax firms
Built and led the practice in Reutlingen and Stuttgart from August 2010 to January 2026.
- Partner in audit, tax and law firms in Berlin and Stuttgart
From May 1999 to July 2010, working with international network partners on risk management, internal control, internal audit and SOX 404.
- Early career from audit assistant to Wirtschaftsprüfer
In internationally oriented mid-sized audit and tax firms in Stuttgart and Berlin.
Publications
- Articles on ESRS, CSRD, whistleblower protection and governance
Written for a mid-market readership, among others in the trade journal DIE NEWS.
Memberships
- Professional body memberships
Wirtschaftsprüfer chamber, Steuerberater chamber, IDW, wp.net and DIIR, among others.
Awards
- Named among the best auditors for the German Mittelstand, 2026/27
manager magazin and WGMB rated his firm excellent in audit, tax, advisory, transaction services and ESG reporting. Fifth consecutive listing.
Regulatory
- Compliance and risk management systems
Advises on the introduction and implementation of compliance management and risk management systems.
- Corporate governance assessments
Across corporate, family and public governance settings.
- Internal audit and IT audit in mid-sized groups and hospitals
- Sarbanes-Oxley 404 audits and outsourced internal audit
Internal audit delivered as an outsourcing or co-sourcing arrangement, including SOX 404 testing with network partners in the United Kingdom and the United States.
- Special audits with a fraud investigation focus
- Sustainability reporting under CSRD and the ESRS standards
Also publishes on ESRS, the German whistleblower protection act and regulatory change affecting mid-sized companies.
- Audits of annual and consolidated accounts under HGB and IFRS
Together with the advisory work that sits alongside an audit engagement.
- Audits under section 53 of the German budgetary principles act
The extended audit required of publicly owned entities.
Legal
- Court expert reports, company valuations and financial due diligence
Prepares expert opinions for court proceedings alongside valuation and due diligence work.
- Capital markets law questions
Kapitalmarktrechtliche Fragestellungen.