Company lists · Data refreshed September 2026

Top 25 Internal audit consulting firms based in Germany

Name: Internal audit consulting firms based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 370 companies tracked

RevenueBase identified 370 internal audit consulting firms headquartered in Germany as of September 2026 and tracks 5,505 professional contacts across them, including 2,705 with verified work emails and 22 with mobile numbers. Hamburg is the largest hub.

This list covers internal audit consulting firms 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 4, 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 4, 2026 86% judged on-target in blind review

370Companies

5,505Contacts tracked

2,705Verified emails

22Mobile numbers

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The 25 largest internal audit consulting firms based in Germany

Ranked by team size

Top 25 of 370 internal audit consulting firms based in Germany, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to internal audit consulting firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	RSM Ebner Stolz	Indirect evidence	Stuttgart, GermanyHQ checked Sep 4, 2026	1,001-5,000	1,444 contacts →
	Indirect evidence “Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?” Source: RevenueBase Database · checked Sep 4, 2026
2	Baker Tilly Germany	Strong evidence	Düsseldorf, GermanyHQ checked Sep 4, 2026	1,001-5,000	759 contacts →
	Strong evidence “With employees in 146 countries, Baker Tilly provides a broad range of innovative and individual consulting services in the areas of Audit & Advisory, Tax, Legal and Consulting…” Source: RevenueBase Database · checked Sep 4, 2026
3	PKF Fasselt	Partial evidence	Berlin, GermanyHQ checked Sep 4, 2026	501-1,000	330 contacts →
	Partial evidence “PKF Fasselt is one of Germany’s leading mid-sized auditing and consulting firms.” Source: RevenueBase Database · checked Sep 4, 2026
4	Dornbach	Indirect evidence	Koblenz, GermanyHQ checked Sep 4, 2026	501-1,000	186 contacts →
	Indirect evidence “DORNBACH ist eine überregional tätige Unternehmensgruppe in den Bereichen Wirtschaftsprüfung, Steuerberatung, Rechtsberatung und Unternehmensberatung.” Source: RevenueBase Database · checked Sep 4, 2026
5	Falk Gmbh & CO KG	Partial evidence	Heidelberg, GermanyHQ checked Sep 4, 2026	201-500	160 contacts →
	Partial evidence “FALK For over 80 years FALK has been in existence as an independent audit, accounting and tax advisory firm with more than 400 employees throughout 10 national offices.” Source: RevenueBase Database · checked Sep 4, 2026
6	Dr. Kleeberg & Partner Gmbh WPG Stbg	Strong evidence	Munchen, GermanyHQ checked Sep 4, 2026	201-500	116 contacts →
	Strong evidence “Kleeberg is a national and internationally active auditing and tax consulting firm based in Munich.” Source: RevenueBase Database · checked Sep 4, 2026
7	PKF Wulf Gruppe	Indirect evidence	Stuttgart, GermanyHQ checked Sep 4, 2026	201-500	111 contacts →
	Indirect evidence “Die PKF Wulf Gruppe ist eine der führenden mittelständischen Prüfungs- und Beratungsgesellschaften.” Source: RevenueBase Database · checked Sep 4, 2026
8	Dhmp Next Gmbh & Co. KG	Indirect evidence	Karlsruhe, GermanyHQ checked Sep 4, 2026	201-500	89 contacts →
	Indirect evidence “dhmp – auch wenn es komplex wird Seit mehr als 50 Jahren sind wir unabhängige Wirtschaftsprüfungs- und Steuerberatungsgesellschaft mit den Beratungsfeldern Steuern…” Source: RevenueBase Database · checked Sep 4, 2026
9	Moore TK	Partial evidence	Mannheim, GermanyHQ checked Sep 4, 2026	201-500	89 contacts →
	Partial 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 4, 2026
10	RWT	Indirect evidence	Reutlingen, GermanyHQ checked Sep 4, 2026	201-500	79 contacts →
	Indirect evidence “Die RWT zählt zu den großen Prüfungs- und Beratungsunternehmen in Deutschland mit rund 350 Mitarbeiterinnen und Mitarbeitern an vier Standorten im Südwesten: Reutlingen…” Source: RevenueBase Database · checked Sep 4, 2026
11	KBHT	Indirect evidence	Neuss, GermanyHQ checked Sep 4, 2026	51-200	74 contacts →
	Indirect evidence “KBHT was founded in Neuss in 1991.” Source: RevenueBase Database · checked Sep 4, 2026
12	BW Partner	Indirect evidence	Stuttgart, GermanyHQ checked Sep 4, 2026	201-500	72 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 4, 2026
13	Ypsilon Group	Partial evidence	Köln, GermanyHQ checked Sep 4, 2026	201-500	72 contacts →
	Partial evidence “Ypsilon ist ein junges, inhabergeführtes Beratungsunternehmen mit drei integrierten Geschäftsbereichen – Tax, Audit & Advisory – und mehr als 220 hochqualifizierte…” Source: RevenueBase Database · checked Sep 4, 2026
14	Passcon Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 4, 2026	51-200	70 contacts →
	Indirect evidence “Passcon is now AML RightSource.” Source: RevenueBase Database · checked Sep 4, 2026
15	Fides Treuhand Gmbh & Co. KG	Indirect evidence	Bremen, GermanyHQ checked Sep 4, 2026	201-500	47 contacts →
	Indirect evidence “FIDES ist eine der TOP 30 Wirtschaftsprüfungs- und Beratungsgesellschaften in Deutschland.” Source: RevenueBase Database · checked Sep 4, 2026
16	Crowe BPG Gmbh	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 4, 2026	51-200	43 contacts →
	Indirect evidence “Die Crowe BPG wurde 1979 in Krefeld gegründet und erschließt sich inzwischen auf die Standorte Düsseldorf und Berlin.” Source: RevenueBase Database · checked Sep 4, 2026
17	IVC Independent Valuation & Consulting AG WPG	Indirect evidence	Essen, GermanyHQ checked Sep 4, 2026	11-50	40 contacts →
	Indirect evidence “What we do: IVC - Agile.” Source: RevenueBase Database · checked Sep 4, 2026
18	GAR Gesellschaft FÜR Aufsichtsrecht UND Revision MBH WPG	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 4, 2026	11-50	34 contacts →
	Indirect evidence “Die GAR Gesellschaft für Aufsichtsrecht und Revision mbH Wirtschaftsprüfungsgesellschaft mit Sitz in Frankfurt am Main wurde im Juli 2009 gegründet.” Source: RevenueBase Database · checked Sep 4, 2026
19	Aios Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 4, 2026	11-50	25 contacts →
	Indirect evidence “AIOS bietet seit mehr als 20 Jahren einem breiten überregionalen Mandantenstamm ein Portfolio hochqualifizierter Dienstleistungen aus den Bereichen Wirtschaftsprüfung…” Source: RevenueBase Database · checked Sep 4, 2026
20	Märkische Revision Gmbh Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft	Indirect evidence	Essen, GermanyHQ checked Sep 4, 2026	51-200	24 contacts →
	Indirect evidence “Als eine der führenden, unabhängigen Wirtschaftsprüfungs- und Steuerberatungsgesellschaften im Ruhrgebiet beraten wir mittelständische Unternehmen, börsennotierte Gesellschaften…” Source: RevenueBase Database · checked Sep 4, 2026
21	Actio Revision UND Treuhand Gmbh	Indirect evidence	Munchen, GermanyHQ checked Sep 4, 2026	51-200	23 contacts →
	Indirect evidence “Sie wollen mehr?” Source: RevenueBase Database · checked Sep 4, 2026
22	ATC TAX Gmbh & Co. KG	Indirect evidence	Berlin, GermanyHQ checked Sep 4, 2026	51-200	23 contacts →
	Indirect evidence “ATC Tax GmbH & Co.” Source: RevenueBase Database · checked Sep 4, 2026
23	ETL Consit Gmbh	Indirect evidence	Bad Oldesloe, GermanyHQ checked Sep 4, 2026	11-50	23 contacts →
	Indirect evidence “Aus s-consit wird ETL consit.” Source: RevenueBase Database · checked Sep 4, 2026
24	I-Advise AG Wirtschaftsprüfungsgesellschaft	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 4, 2026	11-50	22 contacts →
	Indirect evidence “I-ADVISE AG Wir sind eine unabhängige Wirtschaftsprüfungsgesellschaft mit einem Fokus auf M&A Advisory, CFO Advisory, Transaktionsberatung und Unternehmensbewertung.” Source: RevenueBase Database · checked Sep 4, 2026
25	Jakob & Sozien Wirtschaftsprüfer I Steuerberater	Indirect evidence	Baunatal, GermanyHQ checked Sep 4, 2026	51-200	22 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 4, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: internal audit consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names internal audit consulting firms.
Partial evidence: Its own public description names part of internal audit consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name internal audit consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 370 internal audit consulting firms based in Germany

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Internal audit consulting firms based in Germany at a glance

As of Sep 4, 2026

49.1%Verified-email coverage

0.4%Mobile-number coverage

14.9Average contacts per company

11-50Median size (employees)

7.0%Largest-city concentration · Hamburg

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

134

11-50

151

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

26131–60

1,38961–90

1,04090–180

15180+

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 internal audit consulting firms, 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 “internal audit consulting firms”. 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 internal audit consulting firms), 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 internal audit consulting firms, 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, 2,705 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 4, 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.

Internal audit consulting firms by metro

Internal audit consulting firms in Hamburg26

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 internal audit consulting firms, 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 internal audit consulting firms are there based in Germany?

RevenueBase identified 370 internal audit consulting firms 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?

RSM Ebner Stolz, headquartered in Siegen, tops this list with the largest team on record.

Which city has the most internal audit consulting firms?

Hamburg leads with 26 headquartered companies, followed by Munchen (22) and Berlin (20).

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 2,705 verified decision-maker contacts tracked across these 370 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 4, 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.