Stolze – Dr. Diers – Beermann GmbH

Name

Stolze – Dr. Diers – Beermann GmbH

Legal name

Stolze – Dr. Diers – Beermann GmbH

Website

https://stolze-diers-beermann.de

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Tax Advisory & Audit Services

NAICS

Offices of Certified Public Accountants (541211), Management Consulting Services (54161), Administrative Management and General Management Consulting Services (541611)

SIC

Services-Management Consulting Services (8742), Services-Management Services (8741)

akta.pro primary industry

Transaction Tax Structuring & Deal Advisory (BPAHAOAJ)

Keywords

• Audit services
• Tax advisory
• Business valuation
• Succession planning
• Management consulting

Headquarters

HQ city

Emsdetten

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Wirtschaftsprüfung (Audit Services): Statutory audits of annual and consolidated financial statements (HGB and IFRS), special audits, and audit-related consulting including Internal Control System (IKS) implementation. Revenue is generated through project-based engagements with recurring annual audit mandates.
2. Steuerberatung (Tax Advisory): Tax return preparation for businesses and individuals, ongoing tax advisory, tax planning, and tax representation before tax authorities. Includes international tax law services. Revenue is recurring through annual tax compliance engagements.
3. Unternehmensberatung (Management Consulting): Business planning, accounting organization, restructuring/sanitation consulting, Financial and Tax Due Diligence, and IKS design and implementation. One-time project-based revenue.
4. Unternehmensbewertung (Business Valuation): Business purchase/sale advisory, court and arbitration expert opinions, corporate and tax law valuation engagements, and functional transfers. Project-based revenue.
5. Nachfolgeberatung (Succession Planning): Will design, executor services, gift and inheritance tax planning, and succession arrangements for family businesses and individuals. Project-based engagements.
6. Gründungsberatung (Start-up Advisory): Business plan creation, coaching for start-ups, legal form selection, and financing questions for new enterprises.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Stolze – Dr. Diers – Beermann GmbH is a German audit and tax advisory firm (Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft) founded in 2002 with roots tracing back to 1958. The firm provides statutory audits, tax advisory, succession and estate planning, business valuation, international tax law, and management and startup consulting, with approximately 125 employees operating from three offices in Emsdetten, Rheine, and Hamburg. Its client base is focused on small and medium-sized enterprises (Mittelstand) across Germany.

Product overview

Stolze – Dr. Diers – Beermann GmbH operates as a full-service accounting and tax advisory firm offering both traditional professional services and a suite of digital tools. The digital offering is built on the DATEV Unternehmen online platform, which integrates multiple modules including Belege Online (document management), Bank Online (banking integration), Kassenbuch Online (cash book), Auftragswesen Online (order management), and various payroll/HR modules (Lohn Online, Arbeitnehmer Online, Auswertungen Online Personalwirtschaft). Tax preparation is handled through DATEV Meine Steuern. The core professional services include audit (Wirtschaftsprüfung), tax advisory (Steuerberatung), succession planning (Nachfolgeberatung), business valuation (Unternehmensbewertung), international tax law (Internationales Steuerrecht), management consulting (Unternehmensberatung), and startup consulting (Gründungsberatung). The firm serves SME clients across three offices in Emsdetten, Rheine, and Hamburg with a team of approximately 125 employees.

Differentiator

Problem solved

Functional benefit

Products and services

• Statutory Audit
• Tax Advisory
• Succession Planning
• Business Valuation
• International Tax Law
• Management Consulting
• Startup Consulting

Quantifiable outcome

• Awarded 'Beste Steuerberater 2025' and 'Beste Wirtschaftsprüfer 2025' by Handelsblatt/SWI Finance — recognized among top firms in Germany
• +2 more outcomes

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration13 records

Feature4 records

Partnerships

Two partnerships are on record, tiered core and minor.

• AGN InternationalcoreStrategic or Co-development PartnerStolze – Dr. Diers – Beermann GmbH is a long-standing member of AGN International, a global association of independent accounting and tax advisory firms. AGN comprises over 200 firms with approximately 10,500 employees operating in nearly 90 countries. Membership enables cross-border client service and coordination of international engagements. AGN members commit to uniform high-quality standards.
• CW&S (Cooperation of Wirtschaftsprüfer und Steuerberater)minorStrategic or Co-development PartnerCooperation with other accounting and tax advisory firms in Germany under the CW&S umbrella. Enables expanded cross-regional service delivery for the firm's primarily Mittelstand client base, particularly for specialized topics such as special audits (Sonderprüfungen), inheritance tax proceedings (Erbschaftsteuerverfahren), and annual audit engagements.

Scale indicators4 records

Recent moves10 records

Expansion highlights5 records

Broad incumbents

• Deloitte Germany: Big Four firm with a large German Mittelstand and mid-cap practice. Sets the competitive ceiling on large mandates and is increasingly active in the same target segment as Stolze-Diers-Beermann.

Direct peers

• Mazars GmbH & Co. KG: German operation of Mazars providing audit, tax and advisory to mid-market and family-owned businesses. Overlaps directly with Stolze-Diers-Beermann's core offerings and Mittelstand target.
• BDO AG Wirtschaftsprüfungsgesellschaft: German arm of BDO Global, focused on mid-market audit and tax advisory. Competes for the same Mittelstand client base with a similar multi-office German footprint.
• Ebner Stolz: German mid-market audit, tax and consulting firm headquartered in Stuttgart with comparable headcount and a similarly Mittelstand-focused client base. Ebner Stolz is the closest direct competitor in service mix, scale and target segment.
• ETL AG (ETL International Group): Large German-headquartered network of tax advisor and audit firms focused on Mittelstand and SME clients. Network structure and Mittelstand focus make it a close comparable to Stolze-Diers-Beermann's AGN-linked model.
• Grant Thornton AG: German member of Grant Thornton International offering audit, tax and advisory to mid-sized companies. Direct competitor for Mittelstand mandates in the same service lines.
• Rödl & Partner: Germany-headquartered mid-market audit, tax, legal and consulting firm with international offices. Directly comparable in service breadth (Wirtschaftsprüfung, Steuerberatung, Rechtsberatung) and Mittelstand focus, with greater geographic scale.
• Flick Gocke Schaumburg: Bonn-based German tax and legal advisory firm focused on mid-cap and family-owned Mittelstand clients. Strong overlap on international tax, succession planning and corporate tax — the firm's higher-margin advisory lines.
• PKF Industrie- und Verkehrstreuhand GmbH: German mid-market audit and tax firm with industrial and Mittelstand focus. Comparable in service mix and segment, though somewhat larger in scale.

Others

• DATEV eG: German cooperative providing the DATEV software platform that underpins Stolze-Diers-Beermann's digital service delivery. Adjacent ecosystem participant and critical infrastructure provider rather than a competitor.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/stolze-dr-diers-beermann-gmbh

Revenue estimate

Valuation estimate

Number of profiles

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 Stolze – Dr. Diers – Beermann GmbH