GPC Tax AG Steuerberatungsgesellschaft

What GPC Tax AG Steuerberatungsgesellschaft does

GPC Tax AG Steuerberatungsgesellschaft is a privately held German tax advisory firm (Steuerberatungsgesellschaft) headquartered in Berlin at Dudenstraße 10, 10965 Berlin, with a branch office in Bern, Switzerland that has operated under Daniel Ziska's leadership since 2014. The firm is registered with the Steuerberaterkammer Berlin under registration 260751 (HRB 86319, Amtsgericht Berlin Charlottenburg; VAT ID DE225965211) and is licensed to provide tax advisory services under the German professional regime (StBerG, DVStB, BOStB, StBGebV). Its core service lines are International Tax Law (Internationales Steuerrecht), Transfer Pricing, and Corporate Restructuring (Umstrukturierung), complemented by specialized offerings in Swiss Tax Law, M&A Tax Advisory, Business Succession Planning (Unternehmensnachfolge), Tax Return Preparation, peer-to-peer Tax Advisor Support, and dedicated advisory for Financial Services Institutions (Finanzdienstleistungsinstitute). The firm operates through a wholly-owned subsidiary, Meridium AG, which targets IT, digital business, technology, and media clients as a separate vertical.

GPC Tax's customer base consists primarily of owner-managed businesses (Mittelstand) in the financial services, insurance, and real estate sectors, plus project-based engagements in other industries and growth-stage tech clients via Meridium AG. The go-to-market is sales-led and relationship-driven, delivered directly by a 7-person advisory team across Berlin and Bern, with cross-border mandates referred through IECnet — a worldwide network of over 70 partner auditing and tax advisory firms in which GPC Tax is a founding member and CEO Daniel Ziska serves on the board. Marketing channels include the firm website (gpc-tax.de), a LinkedIn company page, active participation in IHK Berlin, Steuerberaterkammer Berlin, Steuerberaterverband Berlin-Brandenburg, AfW Bundesverband Finanzdienstleistung, and the Swiss-German Club, plus an interdisciplinary collaboration with GPC Law for regulatory matters and Das Lohnbüro for payroll.

The firm generates revenue exclusively through professional services fees: statutory advisory work is billed under the Steuerberatervergütungsverordnung (StBVV), while specialized non-statutory services (international tax structuring, transfer pricing methodology, M&A tax, succession planning) are billed under negotiated fee arrangements. The firm has been recognized by Handelsblatt as one of Germany's best tax advisors for eleven consecutive years (2026 ranking) based on analysis of specialist advisor employment, foundational knowledge, and professional competence. Governance is via a two-member Vorstand (Holger Schildt and Daniel Ziska) under an Aufsichtsrat chaired by Frank Rottenbacher; the firm is independently owned with no disclosed parent, private equity, or venture capital investors.

Name

GPC Tax AG Steuerberatungsgesellschaft

Legal name

GPC Tax AG Steuerberatungsgesellschaft

Website

https://gpc-tax.de

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

GPC Tax AG Steuerberatungsgesellschaft is a Berlin-headquartered, licensed German tax advisory firm with a Bern, Switzerland branch, serving owner-managed businesses in financial services, insurance, real estate, and technology/digital sectors with international tax law, transfer pricing, restructuring, M&A tax, and succession planning services delivered by a 7-person team.

Ownership category

akta.pro rank

Product category

Tax Advisory Services

NAICS

Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412), Other Accounting Services (541219)

akta.pro primary industry

Transfer Pricing & International Tax Services (BPAHABAI)

akta.pro secondary industries

Financial Reporting & Technical Accounting Advisory (GAAP/IFRS) (BPAHABAF), Tax Law (BPAHAAAG)

Keywords

• Tax advisory services
• International tax law
• Transfer pricing consulting
• Corporate restructuring advisory
• Tax compliance services

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Tax Advisory and Professional Services: Revenue is generated through professional tax advisory services, including tax return preparation, international tax law consulting, transfer pricing, restructuring, M&A tax advisory, and general tax compliance. Compensation is governed by the Steuerberatervergütungsverordnung (StBVV) for statutory fees, with the possibility of negotiated fees for services outside the fee schedule.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

GPC Tax AG Steuerberatungsgesellschaft is a German licensed tax consulting firm that provides professional tax and accounting advisory services. Its core offerings center on international tax law, transfer pricing, and corporate restructuring, complemented by Swiss tax law, M&A tax advisory, business succession planning, tax return preparation, and specialized advisory for financial services institutions. The firm primarily serves owner-managed companies in the financial services, insurance, and real estate sectors.

Product overview

GPC Tax AG Steuerberatungsgesellschaft operates as a professional tax advisory firm offering a comprehensive suite of tax and accounting services. The core service portfolio centers on International Tax Law (Internationales Steuerrecht), Transfer Pricing, and Restructuring (Umstrukturierung) services. These core offerings are complemented by specialized services including Swiss Tax Law (with an office in Bern), M&A Tax Advisory, Business Succession Planning (Unternehmensnachfolge), Tax Return Preparation (Steuererklärungen), Support for Tax Advisors, and advisory for Financial Services Institutions. The firm primarily serves owner-managed companies in real estate, finance, and insurance sectors, as well as technology and digital businesses through its subsidiary Meridium AG. Services are delivered through a network of over 70 partner firms forming IECnet, an international tax advisory network.

Differentiator

Problem solved

Functional benefit

Products and services

• Internationales Steuerrecht (International Tax Law) Cross-border tax advisory services for clients with activities beyond German borders, covering tax implications of cross-border business activities in Germany and internationally, with support throughout the entire advisory process.
• Transfer Pricing (Verrechnungspreise) Transfer pricing consulting combining analytical expertise with scientific methodology for setting intercompany prices across related-party transactions.
• Umstrukturierung (Restructuring) Tax advisory for corporate restructuring, helping clients align their legal structure with their business needs.
• Schweizer Steuerrecht (Swiss Tax Law) Swiss tax law services including indirect partial liquidations and intercantonal tax allocations, delivered through the dedicated Bern, Switzerland office.
• M & A Tax Advisory Tax optimization services for mergers and acquisitions, supporting clients through company transactions.
• Unternehmensnachfolge (Business Succession) Succession planning advisory for business transitions, including tax planning for generational transfers.
• Steuererklärungen (Tax Return Preparation) Preparation of tax returns and assistance with declarations and forms for individuals and businesses.
• Support für Steuerberater (Tax Advisor Support) Collaborative support services for other tax advisors, enabling knowledge sharing on complex cases while maintaining client relationships.
• Finanzdienstleistungsinstitute (Financial Services Institutions) Specialized advisory for financial services companies covering accounting, VAT, and regulatory compliance.

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Nine partnerships are on record, tiered core and minor.

• IECnetcoreStrategic or Co-development PartnerGPC Tax AG is a founding/member firm of IECnet, a worldwide network of auditing and tax advisory firms comprising over 70 partner firms. The network enables GPC to serve international clients and handle cross-border mandates in collaboration with partner firms globally. CEO Daniel Ziska serves on the IECnet board.
• GPC LawcoreStrategic or Co-development PartnerGPC Law is a legal advisory partner that collaborates with GPC Tax on regulatory matters, particularly for financial services clients requiring cross-disciplinary tax and legal advice (e.g., supervisory law). Referenced as having experts 'in their quiver' for regulatory matters.
• Meridium AGminorStrategic or Co-development PartnerMeridium AG is a subsidiary/partner entity through which GPC Tax serves clients in IT, digital business, technology, and media sectors. It enables GPC to extend its service offerings to high-growth technology companies.
• Steuerberaterkammer Berlin (Berlin Chamber of Tax Advisors)minorOthersGPC Tax AG is registered with the Steuerberaterkammer Berlin under registration number 260751. The chamber is the competent professional regulatory body for tax advisors in Berlin.
• Steuerberaterverband Berlin-Brandenburg e.V.minorOthersProfessional association of tax advisors in Berlin-Brandenburg. GPC Tax is listed as a member/partner of this association.
• IHK Berlin (Berlin Chamber of Industry and Commerce)minorOthersGPC Tax is affiliated with IHK Berlin. CEO Holger Schildt performs committee work in the tax committee of IHK Berlin and previously Hamburg Chamber of Commerce.
• AfW Bundesverband Finanzdienstleistung (Federal Association of Financial Services)minorOthersDaniel Ziska serves as a tax policy advisor to the AfW Bundesverband Finanzdienstleistung. The association supports GPC Tax's visibility in the financial services sector.
• Das LohnbürominorChannel Partner/ Reseller/ DistributorPayroll processing partner that collaborates with GPC Tax to provide comprehensive payroll services to shared clients.
• Swiss-German ClubminorOthersSwiss-German Club is a bilateral business community organization that supports cross-border business relations between Switzerland and Germany. GPC Tax is a member, reinforcing its dual Germany-Switzerland positioning.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Streck Mack Schwedhelm: Boutique German tax law firm specializing in international tax, tax litigation, and advisory for owner-managed businesses and financial services. Direct peer in service specialization and German market positioning.
• Rödl & Partner: International German-origin advisory firm combining legal, tax, and audit services with deep cross-border capabilities and financial services sector expertise. Comparable dual Germany-international positioning and service breadth.
• Ebner Stolz: Independent German audit and tax advisory firm with strong mid-market focus on owner-managed businesses and cross-border tax matters. Comparable client profile (Mittelstand) and service mix.
• Pohlmann & Company: Boutique German tax advisory firm focused on cross-border taxation, transfer pricing, and international tax structuring. Comparable niche specialization and SME/mid-market client focus.
• WTS Germany: Mid-sized German tax and consulting firm with strong international tax, transfer pricing, and financial services sector focus. Direct competitor in the same niche and target client segments.
• Flick Gocke Schaumburg: Leading German tax law and advisory firm specializing in international tax, transfer pricing, and corporate restructuring for large corporates and financial institutions. Closest peer in service mix, client profile, and German market positioning.

Broad incumbents

• BDO Germany: Mid-tier global accounting and tax advisory network with German operations serving SMEs and mid-market financial services. Comparable client segment orientation but broader, less specialized service portfolio.
• Mazars Germany: International audit and advisory network with German tax practice serving mid-market clients including financial services. Overlapping service offerings and cross-border capability, though at larger scale.
• KPMG Germany (Tax practice): Big 4 firm with substantial German tax practice covering international tax, transfer pricing, and financial services. Represents the incumbent competitive context but at materially larger scale and broader service portfolio.
• PwC Germany (Tax practice): Big 4 firm with comprehensive German tax and legal services, including international tax and financial services advisory. Overlaps with GPC Tax in target segments but operates at vastly larger scale across all advisory lines.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/gpc-tax-unternehmerberatung-ag-steuerberatungsgesellschaft

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 GPC Tax AG Steuerberatungsgesellschaft