DIIR - Deutsches Institut für Interne Revision e.V.

What DIIR - Deutsches Institut für Interne Revision e.V. does

DIIR – Deutsches Institut für Interne Revision e.V. is a German registered association (eingetragener Verein) headquartered at Theodor-Heuss-Allee 108 in Frankfurt am Main, recognized as the largest professional body representing the internal audit function in Germany. Its members (3,000+) include internal auditors from banking, insurance, industrial companies, public administration, and small and medium enterprises, supported by 38 specialized working groups with over 1,000 active participants spanning topics from IT audit and anti-financial crime to ESG and hospital internal audit. The organization is governed by a Vorstand chaired by Thomas Berger (Sprecher des Vorstandes), with operational leadership held by Geschäftsführer Jan Stottrop since June 1, 2025, succeeding Dorothea Mertmann.

DIIR's product surface spans four interlocking revenue streams: recurring membership dues, an Akademie delivering 250+ seminars annually across finance, IT audit, compliance, banking, and insurance topics, certification programs including IIA's CIA/CRMA/IAP, the DIIR-issued Interner Revisor credential, and COSO-aligned Internal Controls and ERM certificates, plus an events portfolio (DIIR-KONGRESS, Jahrestagung Finanzen und Industrie, Digitale Tage, sector-specific Tagungen) and standards/guidance publications such as ZIR, ESG-Leitfäden, Revisionshandbuch Kreditinstitute (MaRisk), and German translations of IIA Topical Requirements. Its proprietary digital asset is the Ambition Model, a European cooperation-project self-assessment tool for internal audit maturity benchmarking; supporting platforms include a member community portal, webinar infrastructure, and digital delivery of international training. The institute is integrated into the global coordination of the internal audit profession through partnerships with the IIA, ECIIA, and COSO, and collaborates with IDW and firms such as Forvis Mazars on quality assessment.

The business model is a nonprofit, membership-and-fee-for-service model with tiered member vs. non-member pricing on seminars and certifications (e.g., EU Financial Services Certificate at €1,900 member / €2,400 non-member; COSO certificate programs priced separately). Distribution is direct via the Frankfurt-headquartered Akademie and a multi-channel engagement model (website, newsletter, LinkedIn, webinars, conferences, working groups). Geographic reach is concentrated in the DACH region, with international reach mediated through IIA/ECIIA/COSO partnerships and English-language international training.

Name

DIIR - Deutsches Institut für Interne Revision e.V.

Legal name

DIIR – Deutsches Institut für Interne Revision e.V.

Website

https://diir.de

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

DIIR is Germany's largest professional association for internal auditors, serving 3,000+ members across finance, insurance, and public administration through membership dues, 250+ annual seminars, certifications (CIA, CRMA, IAP, DIIR Internal Auditor, COSO), working groups, and standards-setting publications.

Ownership category

akta.pro rank

Product category

Professional Association - Internal Audit

NAICS

Business Associations (813910)

SIC

Services-Membership Organizations (8600)

akta.pro primary industry

Accounting, Audit & Tax (CPA/CA/ACCA CPE) (EDAAALAA)

akta.pro secondary industry

Audit Management (HDADAIAF)

Keywords

• Internal audit services
• Professional certification programs
• Audit training seminars
• Audit standards development
• Professional association membership

Headquarters

HQ city

Frankfurt am Main

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Membership Fees: Annual membership fees providing access to professional resources, working groups, standards, and member benefits
2. Seminars and Training: Over 250 seminars offered annually covering all relevant topics in internal audit and regulatory requirements, including specialized preparation for certifications
3. Certifications: IIA certifications (CIA, CRMA, IAP) and DIIR's own Internal Auditor certification, along with COSO certificate programs
4. Events and Tagungen: Annual conferences, digital days, specialized tagungen on quality management, anti-fraud, and sector-specific topics

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

DIIR is Germany's leading professional association for internal audit, providing professional development, certification programs, standards, and networking for internal auditors across the finance, insurance, industrial, and public sectors. It delivers over 250 seminars annually, offers IIA-aligned certifications (CIA, CRMA, IAP) and its own Interner Revisor DIIR credential, facilitates 38 specialized working groups, and publishes national audit standards aligned with Global Internal Audit Standards. The organization generates revenue primarily through membership fees, paid training, and certification programs.

Differentiator

Problem solved

Functional benefit

Products and services

• DIIR Academy Seminars (Internal Audit Training) A comprehensive training program offering over 250 seminars annually covering all relevant internal audit topics, including finance, IT audit, compliance, banking, and insurance. Delivered by instructors from practice and science. Available in member and non-member pricing tiers.
• IIA Certification Programs (CIA, CRMA, IAP) International certifications delivered through partnership with IIA, including Certified Internal Auditor (CIA), Certification in Risk Management Assurance (CRMA), and Internal Audit Practitioner (IAP). Includes Continuing Professional Education (CPE) support.
• Interner Revisor DIIR Certification DIIR's proprietary internal auditor certification program with formal examination, admission requirements, exam content, sample questions, fee tables, and continuing professional development hour requirements.
• COSO Certificate Programs (Internal Controls and ERM) International partnership programs with COSO providing certificate programs in Internal Controls (5-day online training, 25.5 CPE credits) and Enterprise Risk Management (up to 23 CPE hours through e-learning and virtual sessions). Training conducted in English.
• EU Financial Services for Internal Auditors Certificate 5-day virtual classroom certificate program on EU financial services for internal auditors. Member price €1,900; Non-member price €2,400. Sessions scheduled in April, September, and December 2026, 9:00-13:00.
• Quality Assessment Services Quality assessment services for internal audit functions, with DIIR's Prüfer für Interne Revisionssysteme (Internal Audit System Examiners) certification. Includes 110-criteria evaluation framework based on Global Internal Audit Standards with Excel evaluation tool.
• DIIR Annual Conferences and Tagungen Annual conferences and specialized tagungen including DIIR-Jahrestagung Finanzen und Industrie, DIIR-KONGRESS, DIIR-Tagung Qualitätsmanagement, DIIR-Anti-Fraud-Management-Tagung, DIIR-Tagung Interne Revision in Öffentlichen Institutionen, CIA-Tagung, and DIIR Digitale Tage.
• Working Groups (Arbeitskreise) 38 specialized working groups with 1,000+ members covering topics from anti-financial crime to hospital internal audit, enabling peer knowledge exchange and continuous professional networking.
• Inhouse Schulungen (Corporate Training) Customized in-house training programs delivered to organizations for team-based internal audit education and professional development, tailored to specific enterprise needs.
• Ambition Model Self-Assessment Tool A European cooperation project providing a free self-assessment tool for internal audit functions, allowing members to benchmark their strategic positioning. Available to members working in internal audit.
• BSI-Gesetz Qualifizierung (BSI Act Qualification) Qualification program aligned with the German BSI-Gesetz (Federal Office for Information Security Act) requirements for information security audit professionals.

Quantifiable outcome

• 3000+ members served across all sectors of German economy and public administration
• +2 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered core and minor.

• IIA (Institute of Internal Auditors)coreStrategic or Co-development PartnerDIIR is fully integrated into the global coordination and structures of the internal audit profession through IIA. This partnership provides access to international standards, Global Internal Audit Standards, IIA certifications (CIA, CRMA, IAP), IIA training on demand, and webinar libraries. DIIR collaborates on publications and the international exchange of professional knowledge.
• ECIIA (European Confederation of Institutes of Internal Auditing)coreStrategic or Co-development PartnerEuropean partnership providing coordination of internal audit profession across Europe. DIIR collaborates on European studies including Risk in Focus, which is conducted with 14-20 European countries. Enables European perspective on regulatory and professional standards.
• COSOcoreStrategic or Co-development PartnerPartnership for COSO certificate programs including Internal Controls and ERM (Enterprise Risk Management). DIIR offers these programs with certification examinations, providing participants with recognized credentials in internal control and risk management frameworks.
• Forvis MazarsminorImplementation/ SI/ Consulting PartnerCollaboration on webinar about quality assessment of internal audit based on Global Internal Audit Standards. Forvis Mazars provides expertise on IDW Prüfungsstandard PS 983 and external quality assessments.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• American Institute of CPAs (AICPA): Largest US accounting/audit professional body offering CPE, certification, and standards. Operates at much greater scale with a global CPE footprint that competes for German audit professionals' training spend.
• ISACA: Global professional association for IT governance, risk, and cybersecurity professionals (CISA, CISM, CRISC). Overlaps with DIIR in IT audit and cyber risk domains but serves a broader digital-trust agenda.
• Institute of Management Accountants (IMA): Global association for management accountants (CMA credential) with significant CPE and member-service infrastructure. Competes with DIIR for the corporate finance and internal-control professional audience.
• Association of Certified Fraud Examiners (ACFE): Global anti-fraud professional association (CFE credential). DIIR runs an Anti-Fraud-Management-Tagung and a dedicated working group, putting it in direct thematic competition for the fraud-audit audience.

Direct peers

• IIA Austria: Austrian national institute for internal audit, operating with the same IIA-aligned model as DIIR but in a smaller market. Closest direct geographic peer in the DACH region.
• Institute of Internal Auditors (IIA): The global parent body for the internal audit profession; DIIR is fully integrated into IIA's global coordination structures, delivers IIA certifications (CIA, CRMA, IAP) in Germany, and localizes IIA standards. IIA is the most direct functional counterpart.
• European Confederation of Institutes of Internal Auditing (ECIIA): Pan-European coordination body for national IIA institutes, of which DIIR is a member. ECIIA co-publishes Risk in Focus studies with DIIR and sets the European-level agenda that DIIR executes nationally.
• IIA Switzerland: Swiss national institute for internal audit; structurally identical to DIIR with German-language overlap, providing comparable member services, certifications, and standards localization in the DACH region.
• Chartered Institute of Internal Auditors (CIIA, UK): The UK national institute for internal auditors, structurally analogous to DIIR with similar membership, certification, and standards-localization model. Direct functional peer operating in an adjacent European market.

Regional players

• Institut der Wirtschaftsprüfer (IDW): German institute of public auditors that co-develops quality assessment standards with DIIR (e.g., DIIR-Revisionsstandard Nr. 3). Adjacent German professional body with overlapping external-audit audience but distinct statutory remit.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/diir-deutsches-istitut-f%C3%BCr-interne-revision-e-v

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about DIIR - Deutsches Institut für Interne Revision e.V.