What ABG International does

ABG International (legal entity: ABG Advice GmbH & Co KG) is a private, Bulgarian-domiciled tax and accounting consultancy founded in 2014 by German tax advisor Friedrich Geise (Dipl. Kfm.) and Bulgarian tax advisor Antoniya Nacheva, and currently managed by Maya Slavova and Violeta Georgieva. The firm delivers a unified cross-border service portfolio spanning company registration in Bulgaria and Germany, ongoing bookkeeping and financial reporting, labor and payroll administration, tax advisory (including double-taxation treaty guidance), and annual tax year-end closing. Its primary customer base is German-speaking natural persons and legal entities with commercial activity in Bulgaria, with a secondary base of Bulgarian and English-speaking businesses; the firm serves clients across size tiers from individuals to large enterprises.

The business is operated as a German-style GmbH & Co KG (Bulgaria-incorporated limited partnership) from a single headquarters at Akademik Igor Kurchatov Street 17 in Varna, Bulgaria, with no additional offices and no disclosed parent entity, subsidiaries, or institutional investors. Revenue is generated through a mix of subscription-recurring engagements (ongoing accounting, payroll, tax advisory) and project-based professional-services fees (company formation, annual tax closing), all priced on a quote basis rather than published rates. GTM is sales-led and referral-driven, anchored by the firm's membership in the German-Bulgarian Chamber of Commerce and Industry (DBIHK) since end of 2014 and a trilingual (German/Bulgarian/English) content website.

The firm has no proprietary technology platform, no app products, no APIs, and no disclosed AI capabilities; delivery is performed directly by a team of 51-100 credentialed tax advisors and accountants. The operating geographies are limited to Bulgaria and Germany. The company is privately held, operating, and has not raised outside funding or undertaken M&A.

Name

ABG International

Legal name

ABG Advice GmbH & Co KG

Website

https://bulgarischekanzlei.de

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

51–100 employees

Short description

ABG International (ABG Advice GmbH & Co KG) is a Varna, Bulgaria-based tax and accounting consultancy founded in 2014, serving German-speaking and Bulgarian clients with cross-border company registration, bookkeeping, payroll, and tax advisory services in Bulgaria and Germany.

Ownership category

akta.pro rank

Product category

Cross-Border Tax and Accounting Advisory

NAICS

Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412), Offices of Certified Public Accountants (541211)

SIC

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

akta.pro primary industry

Tax Operations Support (Indirect Tax, Withholding, Compliance Admin) (BPAAAGAI)

akta.pro secondary industries

General Ledger & Close (Journal Entries, Month-End Close, Reconciliations) (BPAAAGAC), Financial Reporting & Technical Accounting Advisory (GAAP/IFRS) (BPAHABAF)

Keywords

• Cross-border tax advisory
• Accounting and bookkeeping
• Company registration services
• Payroll administration
• Bulgarian German tax consulting

Headquarters

HQ city

Varna

HQ country

Bulgaria

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Accounting and Bookkeeping Services: Ongoing accounting and bookkeeping services for companies operating in Bulgaria and Germany, providing financial record management, compliance, and reporting.
2. Tax Advisory Services: Tax consulting and advisory services including tax planning, compliance, and representation before tax authorities in Bulgaria and Germany.
3. Company Registration: Company formation and registration services in Bulgaria and Germany, including legal form selection guidance and setup support.
4. Payroll and HR Administration: Labor, wages, and personnel administration services including employment contract preparation, payroll processing, and social security filings in Bulgaria and Germany.
5. Annual Tax Closing: Annual accounting and tax year-end closing services for compliance with Bulgarian and German regulations.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

ABG Advice GmbH & Co KG provides cross-border tax advisory, accounting, payroll, and company registration services for clients operating between Bulgaria and Germany. The firm's portfolio covers company formation in either jurisdiction, ongoing bookkeeping, tax planning and compliance, labor and personnel administration, and annual year-end tax closing, delivered by a bilingual team of German and Bulgarian tax advisors.

Product overview

ABG Advice GmbH & Co KG is a German-Bulgarian tax and accounting consulting firm offering a unified suite of professional services. The portfolio centers on company registration (in Bulgaria and Germany), ongoing bookkeeping, payroll and HR administration, tax advisory, and annual tax closing services. The company targets German-speaking clients and Bulgarian/English-speaking businesses engaged in cross-border trade between the two countries.

Differentiator

Problem solved

Functional benefit

Products and services

• Company Registration Services (Firmengründung in Bulgarien und in Deutschland) Assistance with company formation and registration in Bulgaria and Germany, including guidance on appropriate legal forms and legal entity setup, aimed at entrepreneurs and businesses entering either market.
• Ongoing Accounting and Business Consulting (Laufende Buchhaltung in Bulgarien und Firmenberatung in Bulgarien) Continuous bookkeeping, financial reporting, and business consulting for companies operating in Bulgaria, providing timely and reliable financial information to management, partners, and authorities.
• Labor, Wages and Personnel Administration (Arbeit, Lohn und Personalabrechnung in Bulgarien und Deutschland) Preparation of employment contracts, civil contracts, work regulations, payroll calculation, and monthly social contributions management for businesses operating in Bulgaria and Germany.
• Taxation and Tax Advisory (Besteuerung und Steuerberatung in Bulgarien) Tax consulting covering Bulgarian and German tax regulations, including tax planning, compliance, and guidance on double taxation treaties for cross-border clients.
• Annual Tax Year-End Closing (Jährliche Steuerabschlüsse) Year-end financial statement preparation and annual tax return filing for businesses, ensuring compliance with Bulgarian and German reporting obligations.

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• German-Bulgarian Chamber of Commerce and Industry (DBIHK) / Deutsch-Bulgarische Industrie und HandelskammercoreStrategic or Co-development Partner · 1 January 2014ABG Advice GmbH & Co KG is a member of the German-Bulgarian Chamber of Commerce and Industry (DBIHK) since the end of 2014. The DBIHK is an association of German companies and Bulgarian firms with long-term trade contacts in Germany. Membership provides the firm with network access, credibility, and referral opportunities within the German-Bulgarian business community.

Scale indicators1 record

Recent moves3 records

Expansion highlights2 records

Broad incumbents

• Deloitte Bulgaria: Big 4 firm with Bulgarian practice offering tax, audit, and advisory services. Competes for large cross-border engagements in the German-Bulgarian corridor but serves materially larger clients than ABG's SME focus.
• BDO Bulgaria: Mid-tier international accounting network with a Bulgarian member firm offering audit, tax, and advisory services. Competes for the same cross-border clients as ABG but with broader global network and larger scale; less specialized in the German-Bulgarian corridor.
• Mazars Bulgaria: International accounting and advisory firm with Bulgarian operations. Comparable in offering tax, accounting, and cross-border advisory services but at materially larger scale than ABG, focused on mid-market and enterprise clients.
• Grant Thornton Bulgaria: International accounting network with Bulgarian presence offering audit, tax, and advisory. Comparable service portfolio to ABG but at larger scale, serving enterprise and mid-market clients including cross-border engagements.
• Crowe Bulgaria: Top-10 international accounting network with Bulgarian member firm offering audit, tax, and advisory. Comparable service offerings to ABG, with broader international reach serving larger cross-border clients.
• KPMG Bulgaria: Big 4 firm with established Bulgarian practice offering tax, audit, and advisory. Competes for larger cross-border clients in the German-Bulgarian corridor but does not serve the SME niche that is ABG's core.

Direct peers

• Rödl & Partner: German-origin international professional services firm with deep Central and Eastern European coverage, including a strong Bulgarian presence. Directly comparable as a German-rooted cross-border accounting, tax, and legal advisory firm serving clients operating between Germany and CEE/Bulgaria.
• TPA Bulgaria: Regional CEE accounting and tax advisory network with Bulgarian operations, part of the Baker Tilly network. Comparable as a mid-sized cross-border tax and accounting firm serving international clients with Bulgarian operations, similar headcount and service mix to ABG.
• PKF Bulgaria: International accounting network with mid-sized presence in Bulgaria serving SMEs and cross-border clients. Comparable in scale and target market to ABG, particularly for German-speaking clients with Bulgarian operations.
• Moore Bulgaria (Moore Stephens): International accounting and advisory network with Bulgarian member firm serving SMEs and mid-market companies. Comparable to ABG in scale and cross-border advisory focus, including for German-speaking clients in Bulgaria.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/abg-marzillier-consulting-group

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 ABG International