SEIBERT Business & Tax Consulting

What SEIBERT Business & Tax Consulting does

SEIBERT Business & Tax Consulting is a Darmstadt-based German professional services firm providing tax consulting, business consulting, and accounting services, with a stated specialization in IT and technology companies. Founded in 1997 by Kay W. Seibert, who brings more than 25 years of practice experience including prior CFO responsibilities, the firm operates with approximately 12 staff serving a diversified portfolio of technology-sector clients across hardware, robotics, software, and venture holdings. Named engagements include Opremic Group, core sensing GmbH, Pearltree GmbH, Energy Robotics, VRLOGIC, Elabs AG, Xelera Technologies, MD Beteiligung AG, and innoforum GmbH, several of which are described as long-term relationships.

The firm's delivery model is built around a digital accounting stack anchored by DATEV Unternehmen Online (DUO), which has earned the "Digital DATEV-Kanzlei" seal in five consecutive years from 2019 through 2023. Workforce administration is supported by Personio, and the firm extends its reach through a national and international consulting network that enables cross-border engagements beyond its Darmstadt home market. It also participates in ecosystem initiatives including a mentor role within HIGHEST at TU Darmstadt and membership in the House of Digital Transformation.

Commercially, the firm operates as a fee-for-service professional practice with no disclosed pricing model, recurring SaaS revenue, or third-party capital. Its go-to-market is anchored by founder-led relationships, university and digital-transformation network ties, and referral activity within the German technology startup community. Active vacancies for tax consultants, accounting specialists, payroll clerks, and apprentices indicate the practice is scaling headcount in line with client demand rather than via inorganic moves.

Name

SEIBERT Business & Tax Consulting

Legal name

SEIBERT Wirtschaftsberatung Steuerberatung

Website

https://seibert-co.com

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

11–50 employees

Short description

SEIBERT Business & Tax Consulting is a Darmstadt-based German firm founded in 1997 by Kay W. Seibert, delivering tax consulting, business consulting, and accounting services specialized for IT and technology companies, supported by 12 staff and a digital DATEV stack.

Ownership category

akta.pro rank

Product category

Tax & Business Consulting Services

NAICS

Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412), Offices of Certified Public Accountants (541211), Payroll Services (541214), Administrative Management and General Management Consulting Services (541611)

SIC

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

akta.pro primary industry

Payroll & Employment Tax Services (BPAHABAD)

akta.pro secondary industries

Transaction Tax Structuring & Deal Advisory (BPAHAOAJ), Payroll Tax Filing, Compliance & Regulatory Reporting (BPAAAHAB)

Keywords

• Tax advisory services
• Business consulting
• Digital bookkeeping
• IT company taxation
• Financial statement preparation

Headquarters

HQ city

Darmstadt

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Tax Consulting Services: Ongoing tax consultancy including preparation of all business and private tax returns, tax balance sheets, tax assessment examinations, and fiscal representation. Includes ongoing tax strategy advice, choice of legal form, corporate structure optimization, and succession planning.
2. Business Consulting Services: Management consulting, strategic consulting, business coaching, corporate finance, capital procurement support, M&A advisory, and operational accounting services for entrepreneurs and companies in all phases of business lifecycle.
3. Accounting Services: Financial accounting, annual financial statements (HGB and IFRS), payroll accounting, and receivables management services provided on an ongoing basis.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

SEIBERT Wirtschaftsberatung Steuerberatung provides tax advisory, business consulting, financial statement preparation, payroll accounting, and digital bookkeeping services to small and mid-sized businesses in Germany, with a particular specialization in IT and technology companies. Engagements are delivered through DATEV digital accounting platforms and the ZUGFeRD electronic invoicing standard to support paperless, digital-first client workflows.

Product overview

SEIBERT Business & Tax Consulting offers an integrated full-service consulting portfolio comprising three core service lines: Business Consulting (start-up advisory, management consulting, corporate finance, IT consulting, crisis advisory), Tax Consulting (ongoing advisory, tax strategy, VAT, international tax, succession planning), and Accounting (financial accounting, annual statements, payroll). The firm has developed a Digital Accounting module powered by DATEV Unternehmen Online that digitizes and automates document processing and accounting workflows, connecting clients' financial and payroll accounting to SEIBERT's systems via a cloud platform.

Differentiator

Problem solved

Functional benefit

Products and services

• Tax Advisory

Quantifiable outcome

• Digitally certified firm - received 'Digital DATEV-Kanzlei' seal for 5 consecutive years
• +1 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• HIGHEST TU DarmstadtcoreStrategic or Co-development PartnerInnovation and startup center of the Technical University of Darmstadt. Company founder Kay Seibert serves as a mentor at HIGHEST, providing strategic advisory support to technology startups emerging from the university ecosystem.
• House of Digital Transformation (formerly House of IT)coreStrategic or Co-development PartnerRegional center for digital transformation expertise in Hessen. SEIBERT maintains active involvement and engagement in digital transformation initiatives and knowledge sharing.
• DATEV eGcoreTechnology or IntegrationSoftware provider for accounting, tax, and payroll solutions. SEIBERT uses DATEV Unternehmen Online for digital accounting and payroll processing. The firm has received the 'Digital DATEV-Kanzlei' seal from DATEV for five consecutive years.
• BVMW (Der Mittelstand)minorGTM or Marketing PartnerGerman SME association (Bundesverband der Kleinen und Mittleren Unternehmen). Membership provides access to SME network and industry representation.
• IHK Darmstadt (Chamber of Industry and Commerce)minorGTM or Marketing PartnerRegional chamber providing business networking, certification, and SME support services in the Darmstadt region.
• Steuerberaterkammer Hessen (Chamber of Tax Consultants Hessen)coreGTM or Marketing PartnerProfessional regulatory body for tax consultants in the State of Hessen. All tax consultants at SEIBERT are members of this chamber.
• Steuerberaterverband Hessen (Tax Consultants Association Hessen)minorGTM or Marketing PartnerProfessional association for tax consultants in Hessen providing continuing education, networking, and industry representation.
• Hochschule Worms (Worms University of Applied Sciences)minorStrategic or Co-development PartnerPartnership with university of applied sciences for potential talent recruitment and academic collaboration in the field of business and tax consulting.
• International Expert Network (Fellow Consultants, Auditors, Lawyers, Notaries, Banks)coreStrategic or Co-development PartnerMultidisciplinary network of fellow consultants, auditors, lawyers, notaries, banks, and other experts enabling comprehensive business advisory services beyond German borders. This network is fundamental to the firm's full-service approach and international capabilities.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• BDO Germany: Major German audit, tax, and advisory firm serving mid-market and larger clients. Comparable in mid-market tax and consulting capabilities but with substantially greater resources and geographic reach than SEIBERT.
• Mazars Germany: International professional services firm with a German mid-market practice covering tax, audit, and consulting. Comparable to SEIBERT in advisory breadth for SMEs and international subsidiaries, but at much larger scale.
• Baker Tilly Germany: Top-10 German audit, tax, and consulting firm with strong mid-market focus. Overlaps with SEIBERT's SME advisory offering but operates at significantly larger scale and broader service portfolio.

Direct peers

• Rödl & Partner: German-led international professional services firm specializing in mid-market tax, legal, audit, and consulting. Directly comparable to SEIBERT in targeting owner-led SMEs and mid-sized companies with combined tax + business advisory — but at much larger scale.
• Acconsis GmbH: German tax and business consulting firm focused on SMEs and mid-sized companies, offering tax, accounting, payroll, and corporate finance. Closely comparable in size, scope, and SME focus to SEIBERT.
• Ebner Stolz: Top-10 German tax, audit, and consulting firm focused on mid-market companies. Closely comparable to SEIBERT in serving owner-managed SMEs with full-service tax and business advisory, including digital transformation expertise.
• Crowe Germany (Crowe BPG): German mid-market accounting, tax, and advisory firm, part of the global Crowe network. Comparable to SEIBERT in mid-market tax and business consulting focus, with international delivery capability.
• ETL AG: Germany's largest tax consulting network with hundreds of partner offices and DATEV-aligned technology stack. Direct competitor to SEIBERT in SME tax consulting, with broader geographic reach but a federated partner model.
• Schomerus & Partner: German mid-market tax, audit, and legal advisory firm headquartered in Hamburg. Comparable to SEIBERT in serving owner-led SMEs with bundled tax + consulting services, though broader in legal practice.

Regional players

• Michaelis Wirtschaftsprüfer Steuerberater: German mid-market tax and audit firm with strong regional footprint. Comparable to SEIBERT in SME-focused tax and business consulting delivery model, though operating in a different German region.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/seibert-co

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 SEIBERT Business & Tax Consulting