WirtschaftsTreuhand

What WirtschaftsTreuhand does

WirtschaftsTreuhand GmbH is a privately-held German professional services firm founded on 13 December 1939 in Stuttgart by Erich Müller, specializing in integrated audit, tax advisory, legal, business consulting, and IT compliance services for medium-sized enterprises and family-owned businesses in southern Germany. The firm operates from four offices (Stuttgart headquarters, Munich, Schorndorf, and Ludwigsburg) with approximately 140 staff organized under eight Managing Partners (Carsten Ernst, Daniel Faust, Dr. André Fiebiger, Mirco Hagemeyer, Ralf Heinstein, Philipp Krais, Martin Lucas, and Andreas Weinberger), delivering engagements through a partner-led model in which each client is assigned a dedicated Managing Partner coordinating interdisciplinary teams across service lines. Legal entities within the group include WirtschaftsTreuhand GmbH (audit/tax), WiTreu legal Partnerschaft mbB (legal services), and WITREU Unternehmensberatung GmbH (management consulting).

The core offering spans eight service lines: Wirtschaftsprüfung (statutory and voluntary auditing under HGB, IFRS, and IDW standards), Steuerberatung (domestic and international tax planning, compliance, transfer pricing), Rechtsberatung (via WiTreu legal), Rechnungslegung (accounting and financial reporting), Unternehmensbewertung (IDW S1 business valuation and M&A support), Unternehmensberatung (restructuring and strategic advisory via WITREU), IT-Beratung (IT, GDPR/DSGVO, and HinSchG compliance), and Nachhaltigkeitsberaterstattung (CSRD/ESRS sustainability reporting). The firm has been a member of AGN International since 1981, granting access to 180+ member firms across 80+ countries for cross-border engagements, and operates a dedicated French Desk in partnership with BM&A in Paris for Franco-German advisory. Revenue is generated through quote-based professional services fees with no publicly disclosed pricing structure, and the firm is privately held with no external investment or parent company.

Distribution is exclusively direct and partner-led with no intermediary channels. Marketing activity runs through the bilingual corporate website, a monthly Mandantenrundschreiben client newsletter, and corporate profiles on LinkedIn, XING, Kununu, Facebook, Instagram, and YouTube. Industry recognition is extensive and includes the manager magazin "Best German Public Auditors for Mittelstand 2026/27" award, Handelsblatt Best Tax Advisors and Public Auditors 2023 and 2024, JUVE Handbuch Steuern 2023 and 2024, and a Lünendonk Top 10 ranking improvement from 7th place in 2023 to 6th place in 2024 among networks/alliances with AGN Germany partners. Client survey data indicates 78% of clients rate fees as 'appropriate' to 'very attractive' and over 75% of client ratings are 'very good' or 'excellent' across audit, tax, advisory, and ESG services.

Name

WirtschaftsTreuhand

Legal name

WirtschaftsTreuhand GmbH

Website

https://wirtschaftstreuhand.de

Company type

Private

Founded year

1939

Operating status

Operating

Headcount range

101–250 employees

Short description

WirtschaftsTreuhand GmbH is a German professional services firm founded in 1939, providing integrated audit, tax, legal, business consulting, and sustainability reporting services to medium-sized enterprises and family businesses across four offices in southern Germany, with international reach through AGN International.

Ownership category

akta.pro rank

Product category

Accounting & Auditing Services

NAICS

Management, Scientific, and Technical Consulting Services (5416), Professional, Scientific, and Technical Services (54), Legal Services (5411), Administrative Management and General Management Consulting Services (541611)

SIC

Services-Engineering, Accounting, Research, Management (8700), Services-Management Consulting Services (8742), Services-Legal Services (8111)

akta.pro primary industry

Audit & Assurance Services (BPAHABAA)

akta.pro secondary industries

ESG Governance, Sustainability Reporting & Assurance Advisory (BPAHAFAJ), ESG, Sustainability Reporting & Compliance (BPAEAPAM)

Keywords

• Auditing services
• Tax advisory
• Business consulting
• Sustainability reporting
• Business valuation

Headquarters

HQ city

Stuttgart

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Wirtschaftsprüfung (Auditing): Annual financial statement audits, consolidated reporting packages (IFRS/French GAAP), and statutory audits for mid-sized enterprises.
2. Steuerberatung (Tax Advisory): Comprehensive tax advisory services including international tax law, transfer pricing, and tax compliance systems.
3. Rechtsberatung (Legal Advisory): Legal advisory services provided through WiTreu legal Partnerschaft mbB partnership.
4. Unternehmensberatung (Business Consulting): Business consulting, restructuring advisory, M&A support, and due diligence services through WITREU Unternehmensberatung GmbH.
5. IT-Beratung (IT Consulting): IT consulting, data protection (DSGVO) consulting, and compliance system audits.
6. Nachhaltigkeitsberichterstattung (Sustainability Reporting): ESG and CSR sustainability reporting advisory in accordance with EU standards (CSRD/ESRS).

Go-to-market motion2 records

Distribution channels1 record

Marketing channels9 records

Core offering

WirtschaftsTreuhand is a German professional services firm providing statutory and voluntary auditing, comprehensive tax advisory, legal advisory, business consulting, IT and data protection consulting, business valuation, financial reporting, and sustainability reporting (CSRD/ESRS) services. The firm delivers these capabilities as an integrated, interdisciplinary offering with a dedicated partner contact for each client, supported by cross-disciplinary expert teams. It primarily serves mid-sized enterprises (Mittelstand), family businesses, and public-sector/non-profit organizations in southern Germany, with cross-border capabilities via the AGN International network.

Product overview

WirtschaftsTreuhand is a mid-sized German professional services firm offering an integrated portfolio of audit, tax advisory, legal, and consulting services. The core service offering consists of eight interconnected competencies: Auditing (Wirtschaftsprüfung), Tax Advisory (Steuerberatung), Legal Advisory (Rechtsberatung via WiTreu legal), Accounting and Financial Reporting (Rechnungslegung), Business Valuation (Unternehmensbewertung), Business Consulting (Unternehmensberatung), IT and Data Protection Consulting (IT-Beratung), and Sustainability Reporting (Nachhaltigkeitsberichterstattung). The firm operates as a unified service with personal partner contact for each client, supported by interdisciplinary teams. Complementary services include the WiTreu-Akademie for staff training, international services through AGN International network membership, and the French Desk for Franco-German advisory. Subsidiaries include WITREU Unternehmensberatung GmbH (management consulting) and WiTreu legal Partnerschaft mbB (legal services). The firm employs approximately 140 staff across four locations (Stuttgart, Munich, Schorndorf, Ludwigsburg) and has been operating since 1939.

Differentiator

Problem solved

Functional benefit

Products and services

• Wirtschaftsprüfung (Auditing) Statutory and voluntary auditing services for annual financial statements, consolidated financial statements (IFRS/French GAAP), and special purpose audits, primarily for mid-sized German enterprises.
• Steuerberatung (Tax Advisory) Comprehensive tax advisory covering national and international tax planning, tax compliance, tax return preparation, international tax law, and transfer pricing for enterprises.
• Rechtsberatung (Legal Advisory) Legal advisory services delivered through affiliated WiTreu legal Partnerschaft mbB covering business law matters for the firm's enterprise clients.
• Rechnungslegung (Accounting and Financial Reporting) Financial accounting services, preparation of annual financial statements, and advisory on accounting standards including HGB and IFRS for corporate clients.
• Unternehmensbewertung (Business Valuation) Business and company valuations following IDW S1 standards, including M&A advisory, transaction support, and Certified Valuation Analyst (CVA) engagements.
• Unternehmensberatung (Business Consulting) Management consulting and advisory services for strategic planning, restructuring, M&A support, due diligence, and operational improvement, delivered via affiliated WITREU Unternehmensberatung GmbH.
• IT-Beratung (IT and Data Protection Consulting) Advisory services covering IT consulting, GDPR/DSGVO compliance, and Hinweisgeberschutzgesetz (Whistleblower Protection Act) compliance system audits for enterprise clients.
• Nachhaltigkeitsberichterstattung (Sustainability Reporting) Advisory on sustainability reporting under EU CSRD/ESRS standards, ESG analysis, and CSR compliance for corporate sustainability responsibility reporting.
• AGN International Services International advisory services leveraging AGN International network membership (180+ firms, 80+ countries), including cross-border structures, transfer pricing documentation, and international investment structuring.
• French Desk Specialized services for Franco-German business relations, including audit of German subsidiaries of French companies, tax and legal due diligence for M&A, and support for establishment in Germany or France.

Quantifiable outcome

• Team grew from 94 to 107 employees (2023-2025), demonstrating continued growth and service capacity
• +2 more outcomes

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Partnerships

Four partnerships are on record, tiered core.

• AGN International LtdcoreStrategic or Co-development Partner · 1 January 1981Member of AGN International since 1981, a global association of over 180 auditing firms with more than 11,000 staff in approximately 80 countries. Enables international client support and cross-border advisory services. Firm team members hold positions on EMEA Board of Directors and various EMEA committees including Tax Task Force, Accounting/Auditing/Education, Membership Development, and IT Task Force.
• BM&A (Beaumier, Moysan & Associés)coreStrategic or Co-development PartnerLongstanding and close collaboration with AGN partner BM&A in Paris. Supports German companies in their activities in France and provides reciprocal support for French companies in Germany. Specializes in cross-border Franco-German advisory including audit, tax, legal and M&A services.
• WiTreu legal Partnerschaft mbBcoreStrategic or Co-development PartnerCooperation with Rechtsanwälte (lawyers) partnership providing legal advisory services. Located in Munich with phone +49 89 288 111 50. Part of integrated interdisciplinary service offering alongside auditing and tax advisory.
• WITREU Unternehmensberatung GmbHcoreStrategic or Co-development PartnerAffiliated consulting company (HRB 20198) providing business consulting services as part of the WirtschaftsTreuhand Group. Phone: +49 711 48931-444, www.w-t-u.com

Scale indicators10 records

Recent moves11 records

Expansion highlights6 records

Direct peers

• Ebner Stolz: Independent German audit, tax, legal and advisory firm headquartered in Stuttgart with a strong Mittelstand focus across multiple German offices; the closest direct comparable in size, regional footprint, and interdisciplinary service mix.
• BDO AG Wirtschaftsprüfungsgesellschaft: Top-tier mid-market accounting and advisory network in Germany offering audit, tax, legal and consulting services to mid-sized enterprises; competes for the same Wirtschaftsprüfung and Steuerberatung mandates as WirtschaftsTreuhand.
• Rödl & Partner: German-origin interdisciplinary firm with strong Mittelstand and international focus (audit, tax, legal, consulting); comparable business model and similar emphasis on owner-managed mid-cap clients.
• Mazars GmbH & Co. KG: International audit and advisory network with a German practice serving mid-sized companies; comparable in service breadth and Mittelstand client orientation.
• Grant Thornton AG: German mid-market member of the Grant Thornton network providing audit, tax and advisory services to Mittelstand clients; directly comparable client segment and service mix.
• PKF Fasselt Schlage: German mid-tier audit and advisory network serving mid-sized companies with audit, tax, legal and consulting services; similar positioning in the Mittelstand audit market.
• Baker Tilly Germany: German mid-market member of Baker Tilly network; offers audit, tax, legal and consulting services to mid-sized enterprises with a comparable interdisciplinary model.
• RSM Germany: German arm of the RSM international network providing audit, tax and consulting to mid-cap clients; competes in the same Mittelstand advisory segment.

Broad incumbents

• KPMG AG Wirtschaftsprüfungsgesellschaft: Big Four firm with a substantial Mittelstand and mid-cap practice in Germany; broader portfolio including major accounts but overlapping capability in audit, tax, legal and ESG advisory serving mid-sized enterprises.

Others

• DATEV eG: German cooperative providing IT, software and data services primarily to tax advisors, auditors and accountants; ecosystem participant that WirtschaftsTreuhand's licensed professionals rely on for daily workflows.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/wirtschaftstreuhand
• Instagraminstagram.com/wirtschaftstreuhand

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries1 record

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 WirtschaftsTreuhand