Company lists · Data refreshed September 2026

Top 25 Accounting firms providing outsourced accounting companies based in Germany

RevenueBase identified 638 accounting firms providing outsourced accounting companies headquartered in Germany as of September 2026 and tracks 2,236 professional contacts across them, including 800 with verified work emails and 27 with mobile numbers. Berlin is the largest hub.

This list covers accounting firms providing outsourced accounting companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
638Companies
2,236Contacts tracked
800Verified emails
27Mobile numbers
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The 25 largest accounting firms providing outsourced accounting companies based in Germany

Ranked by team size
Top 25 of 638 accounting firms providing outsourced accounting companies based in Germany, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to accounting firms providing outsourced accounting companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMunich, GermanyHQ checked Sep 27, 2026201-500170 contacts →

Indirect evidence

“GKK PARTNERS ist eine expandierende Wirtschaftsprüfungs- und Steuerberatungsgesellschaft mit Sitz in München.”

Source: RevenueBase Database · checked Sep 27, 2026
2Indirect evidenceMannheim, GermanyHQ checked Sep 27, 2026201-50090 contacts →

Indirect evidence

“With more than 130 specialists at five locations in Germany and Luxembourg, Moore TK offers a wide range of individual consulting services in the areas of auditing, tax advisory…”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceStuttgart, GermanyHQ checked Sep 27, 2026201-50070 contacts →

Indirect evidence

“BW PARTNER – geleitet von Zahlen und inspiriert von Visionen, gestalten wir die Zukunft unserer Mandanten und fördern die Karrieren unserer Mitarbeiter.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceBaden-Baden, GermanyHQ checked Sep 27, 202651-20045 contacts →

Indirect evidence

“Der Spezialdienstleister lohn-ag.de AG ist Marktführer für ausgelagerte Lohnbuchhaltung und Personalwirtschaft in den Branchen Gastronomie, Hotellerie, Gesundheitswesen und…”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceMannheim, GermanyHQ checked Sep 27, 202651-20034 contacts →

Indirect evidence

“Seit 1934 begleiten wir als vertrauensvoller Partner die steuerlichen und wirtschaftlichen Angelegenheiten unserer Mandanten.”

Source: RevenueBase Database · checked Sep 27, 2026
6Strong evidenceBremen, GermanyHQ checked Sep 27, 202651-20034 contacts →

Strong evidence

“The RTC | Group is an accounting group located in Bremen, Hamburg and Lower Saxony in Germany.”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceMünchen, GermanyHQ checked Sep 27, 202651-20029 contacts →

Indirect evidence

“Als innovative, digitale Kanzlei, verbindet KMpro München Exzellenz, Effizienz mit Teamwork in der Steuerberatung & Wirtschaftsprüfung.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceMünchen, GermanyHQ checked Sep 27, 202651-20024 contacts →

Indirect evidence

“Sie wollen mehr?”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidenceDüsseldorf, GermanyHQ checked Sep 27, 202651-20022 contacts →

Indirect evidence

“Als mittelständische Wirtschaftsprüfungs- und Steuerberatungsgesellschaft beraten wir mit einem über 60-köpfigen Team international tätige Konzerne sowie deren Tochterunternehmen…”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceBaunatal, GermanyHQ checked Sep 27, 202651-20022 contacts →

Indirect evidence

“Als modernes und serviceorientiertes Unternehmen setzt Jakob & Sozien neben permanent aktualisierter Fachkompetenz auf gegenseitiges Vertrauen und eine interdisziplinäre Beratung.”

Source: RevenueBase Database · checked Sep 27, 2026
11Indirect evidenceDüsseldorf, GermanyHQ checked Sep 27, 202651-20020 contacts →

Indirect evidence

“Penner + Lanfermann Treuhand GmbH ist eine partnerschaftlich geführte Wirtschaftsprüfungsgesellschaft.”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceGroßwallstadt, GermanyHQ checked Sep 27, 202651-20019 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceKöln, GermanyHQ checked Sep 27, 202651-20017 contacts →

Indirect evidence

“Mit gut 60 Mitarbeitern und einer Berufsträger-Quote von rund 33 Prozent bietet Klein + Partner die optimale Größe, sowohl Full-Service in den Bereichen Wirtschaftsprüfung und…”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceKiel, GermanyHQ checked Sep 27, 2026201-50015 contacts →

Indirect evidence

“Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceBerlin, GermanyHQ checked Sep 27, 202611-5014 contacts →

Indirect evidence

“The only accountant you will ever need.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceHamburg, GermanyHQ checked Sep 27, 202651-20014 contacts →

Indirect evidence

“Professionalität, reibungslose Abläufe und das Quäntchen mehr an Service - genau das erwartet Sie bei der HRV, dem Spezialisten in Sachen Rechnungswesen Die HRV GmbH in Hamburg…”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceNürnberg, GermanyHQ checked Sep 27, 20261-1014 contacts →

Indirect evidence

“We are tax consultants and auditors with extensive experience and are based in Nuremberg.”

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidenceNordhorn, GermanyHQ checked Sep 27, 202611-5013 contacts →

Indirect evidence

“Wir sind NorCon - eine moderne, digitale und partnerschaftliche Kanzlei mit Sitz in Nordhorn.”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidencePotsdam, GermanyHQ checked Sep 27, 202651-20012 contacts →

Indirect evidence

“Wir erstellen für Sie Jahresabschlüsse, Steuererklärungen, Buchführung, Lohnabrechnung, prüfen Ihre Jahresabschlüsse und beraten Sie in allen betriebswirtschaftlichen Belangen.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceGermanyHQ checked Sep 27, 202611-5012 contacts →

Indirect evidence

“We're not your traditional service provider.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceBerlin, GermanyHQ checked Sep 27, 202651-20011 contacts →

Indirect evidence

“Bartsch Real Estate GmbH is a company based out of Friedrichstraße 171, 10117 Berlin, Germany.”

Source: RevenueBase Database · checked Sep 27, 2026
22Indirect evidenceMainz-gonsenheim, GermanyHQ checked Sep 27, 20261-1010 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceHerrenberg, GermanyHQ checked Sep 27, 202651-20010 contacts →

Indirect evidence

“Als mittelständische Wirtschaftsprüfungs- und Steuerberatungsgesellschaft begleiten wir Unternehmen in steuerlichen und betriebswirtschaftlichen Fragen, von Steuerberatung und…”

Source: RevenueBase Database · checked Sep 27, 2026
24Indirect evidenceAugsburg, GermanyHQ checked Sep 27, 202611-5010 contacts →

Indirect evidence

“Wirt­schafts­prü­fungs- & Steu­er­be­ra­tungs­ge­sell­schaft Wir sind ein mittelständisch ausgerichtetes Team aus Wirtschaftsprüfern und Steuerberatern mit rund 35 Mitarbeitern in…”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceWürzburg, GermanyHQ checked Sep 27, 202651-20010 contacts →

Indirect evidence

“Wir bewerten, beraten, agieren.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 638 accounting firms providing outsourced accounting companies based in Germany

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Accounting firms providing outsourced accounting companies based in Germany at a glance

As of Sep 27, 2026
35.8%Verified-email coverage
1.2%Mobile-number coverage
3.5Average contacts per company
1-10Median size (employees)
10.2%Largest-city concentration · Berlin
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
390
11-50
189
51-200
31
201-500
4
501-1,000
2
5,001-10,000
1
10001+
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 30.0d

Company record updated

Median 82.0d

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among accounting firms providing outsourced accounting companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Germany whose own description of what they do matches “accounting firms providing outsourced accounting companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names accounting firms providing outsourced accounting companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among accounting firms providing outsourced accounting companies, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 800 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names accounting firms providing outsourced accounting companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many accounting firms providing outsourced accounting companies are there based in Germany?

RevenueBase identified 638 accounting firms providing outsourced accounting companies headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

GKK Partners, headquartered in Munich, tops this list with the largest team on record.

Which city has the most accounting firms providing outsourced accounting companies?

Berlin leads with 65 headquartered companies, followed by Hamburg (35) and Koln (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 800 verified decision-maker contacts tracked across these 638 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.