Hbbn Gmbh

What Hbbn Gmbh does

HBBN GmbH is a German professional services firm founded on March 1, 1992 in Osnabrück by Karl-Heinz Herden, offering an integrated portfolio of auditing, tax consulting, legal advisory, and business consulting services. The firm operates through two physical office locations — its Osnabrück headquarters at Hans-Wunderlich-Straße 3 and a Hamburg regional office at Poßmoorweg 2 in the Goldbekhöfe building — supplemented by remote delivery via TeamViewer remote access, video conferencing, telephone, and email. HBBN employs approximately 130 people across both offices, including 25 professionals holding qualifications as Wirtschaftsprüfer (auditors), Steuerberater (tax consultants), and Rechtsanwälte (lawyers), and is led by a board of 8 managing partners/shareholders following a succession that saw the founder depart at end-2023 and three new partners admitted in 2022, 2023, and 2024.

The firm's service portfolio spans seven practice areas: Wirtschaftsprüfung (auditing), Steuerberatung (tax consulting), Betriebswirtschaftliche Beratung (business consulting), Unternehmensberatung (management consulting), Unternehmensbewertung (business valuation), Rechnungs- und Personalwesen (accounting and HR/payroll), and Nachhaltigkeitsberichterstattung (sustainability reporting under CSRD). HBBN does not develop proprietary technology platforms; service delivery relies on standard professional software, digital document management, and video conferencing. The customer base spans the German Mittelstand and larger enterprises (with named clients such as Pro Urban AG, agathon GmbH & Co. KG, Procar Automobile, Flexicon AG, and Küchen Aktuell) as well as freelancers and private individuals, segmented horizontally by client size tier.

Revenue is generated entirely through professional services fees on a project and retainer basis; pricing is not publicly disclosed. The go-to-market is sales-led, relying on direct relationships, professional referrals, and reputation earned through consecutive recognition by FOCUS MONEY as a TOP Steuerberater (2021-2026), manager magazin's Top Accounting Firm 2026/27 (5 of 5 crowns), and the kununu Top Company seal. HBBN is privately held with no external investors, no funding rounds, and no parent company; international reach for cross-border engagements is enabled through membership in the MSI Global Alliance network headquartered in London.

Name

Hbbn Gmbh

Legal name

HBBN GmbH

Website

https://hbbn.org

Company type

Private

Founded year

1992

Operating status

Operating

Short description

HBBN GmbH is a German professional services firm providing integrated audit, tax consulting, legal advisory, and business consulting services to mid-sized companies, large enterprises, freelancers, and private individuals across two locations in Osnabrück and Hamburg.

Ownership category

akta.pro rank

Product category

Tax and Audit Professional Services

NAICS

Management Consulting Services (54161), Administrative Management and General Management Consulting Services (541611), Other Accounting Services (541219), Professional, Scientific, and Technical Services (541)

SIC

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

akta.pro primary industry

Private Client/High-Net-Worth Advisory (FSAEAAAN)

Keywords

• Tax consulting services
• Audit and assurance
• Business valuation
• Management consulting
• Sustainability reporting

Headquarters

HQ city

Osnabrück

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure, Others

Revenue model

1. Professional Services Fees: HBBN generates revenue through fees for professional services including tax consulting, auditing, legal advice, business valuation, and management consulting. Services are delivered to mid-sized companies, large enterprises, freelancers, and private individuals on a project and retainer basis.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

HBBN GmbH is a German professional services firm delivering tax consulting (Steuerberatung), auditing (Wirtschaftsprüfung), business consulting (Betriebswirtschaftliche Beratung), management consulting (Unternehmensberatung), business valuation (Unternehmensbewertung), accounting and HR (Rechnungs- und Personalwesen), and CSRD sustainability reporting (Nachhaltigkeitsberichterstattung). Services are delivered to mid-sized and large German companies, freelancers, and private individuals through offices in Osnabrück and Hamburg.

Product overview

HBBN GmbH is a professional services firm offering a unified portfolio of audit, tax, and consulting services. The core offering consists of seven integrated service lines: Wirtschaftsprüfung (Auditing), Steuerberatung (Tax Consulting), Betriebswirtschaftliche Beratung (Business Consulting), Unternehmensberatung (Management Consulting), Unternehmensbewertung (Business Valuation), Rechnungs- und Personalwesen (Accounting & HR), and Nachhaltigkeitsberichterstattung (Sustainability Reporting). These services support clients from startup consulting through succession planning, serving mid-sized companies, large enterprises, and professionals.

Differentiator

Problem solved

Functional benefit

Products and services

• Wirtschaftsprüfung (Auditing) Audit services ensuring the reliability of company financial data and providing a solid basis for business decisions, delivered by qualified Wirtschaftsprüfer to companies, freelancers, and private clients.
• Steuerberatung (Tax Consulting) Tax optimization and organization services aimed at reducing tax burden through strategic tax planning, delivered by qualified Steuerberater to mid-sized companies, large enterprises, freelancers, and private individuals.
• Betriebswirtschaftliche Beratung (Business Consulting) Advisory services supporting operational decision-making with expertise and specialist knowledge amid dynamic economic changes, targeted at companies facing business decisions.
• Unternehmensberatung (Management Consulting) Strategic business consulting supporting clients across all phases of corporate development, including start-up advisory, growth support, and development of tailored corporate strategies.
• Unternehmensbewertung (Business Valuation) Business valuation services providing negotiation baselines and orientation for transactions, company sales, and negotiations, used by clients preparing for M&A or ownership transitions.
• Rechnungs- und Personalwesen (Accounting & HR) Comprehensive accounting and human resources support including digital document processing for efficient financial and payroll management, provided to companies on an outsourced basis.
• Nachhaltigkeitsberichterstattung (Sustainability Reporting) Support for preparing CSRD sustainability reports and implementing sustainability management systems, helping companies meet EU sustainability disclosure requirements.

Named customers10 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Five partnerships are on record, tiered core and minor.

• MSI Global AlliancecoreStrategic or Co-development PartnerInternational professional network providing access to global expertise in tax and auditing. HBBN is a member of MSI Global Alliance, London, enabling the firm to serve clients with international operations and access current best practices from around the world.
• Steuerberaterverband Westfalen-Lippe e.V.minorOthersRegional tax consultant association providing professional development, networking, and advocacy for members.
• Steuerberaterverband Niedersachsen Sachsen-Anhalt e.V.minorOthersRegional tax consultant association for Lower Saxony and Saxony-Anhalt.
• Institut der Wirtschaftsprüfer in Deutschland e.V. (IDW)minorOthersInstitute of Public Auditors in Germany providing standards, guidance, and professional development for auditors.
• Steuerberaterverband Hamburg e.V.minorOthersRegional tax consultant association for Hamburg.

Scale indicators6 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Rödl & Partner: German-headquartered multi-disciplinary professional services firm offering integrated audit, tax, legal, and consulting services to the Mittelstand. Closely comparable in size, service mix, and Mittelstand focus to HBBN.
• BANSBACH GmbH: German tax, audit, and consulting firm headquartered in Stuttgart, serving Mittelstand clients across Germany with a similar integrated service portfolio. Comparable regional multi-disciplinary peer to HBBN.
• Ebner Stolz: One of the largest independent German audit, tax, and consulting firms with similar multi-disciplinary offerings for mid-sized companies. Directly comparable to HBBN in service breadth, Mittelstand client focus, and scale.
• Schultze & Braun GmbH: German mid-sized law and advisory firm focused on restructuring, tax, and corporate advisory for Mittelstand. Comparable multi-disciplinary advisory model serving a similar client segment in regional Germany.

Broad incumbents

• Mazars Germany: International audit, tax, and advisory network with a German practice. Overlaps with HBBN's tax, audit, and business consulting offerings, particularly for clients with international operations.
• KPMG Germany: Big 4 firm in Germany offering audit, tax, legal, and consulting. Competes with HBBN for large-enterprise and international mandates and is the dominant scale incumbent in the German audit market.
• RSM Germany (formerly Baker Tilly): German arm of the RSM global network, providing audit, tax, and consulting to mid-market companies. Comparable service lines and Mittelstand focus, with broader international backing than HBBN.
• BDO Germany: Global mid-tier accounting network operating in Germany with audit, tax, and advisory services. Competes with HBBN for larger Mittelstand and corporate clients; broader footprint and brand recognition than HBBN.
• Grant Thornton Germany: International mid-tier accounting network with a German practice serving Mittelstand and large enterprises. Overlaps with HBBN across audit, tax, and advisory services.

Others

• DATEV eG: German cooperative providing tax, accounting, and ERP software plus professional services support to tax consultants and auditors across Germany. Functions as both a technology partner and industry association for firms like HBBN.

Market position

Strengths2 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookde-de.facebook.com/HBBN.de
• LinkedInlinkedin.com/company/hbbngmbh
• Instagraminstagram.com/_hbbn_

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 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 Hbbn Gmbh