Company lists · Data refreshed September 2026

Top 25 Advisory and outsourcing services based in Germany

Name: Advisory and outsourcing services based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 8,989 companies tracked

RevenueBase identified 8,989 advisory and outsourcing services headquartered in Germany as of September 2026 and tracks 108,368 professional contacts across them, including 40,493 with verified work emails and 1,921 with mobile numbers. Berlin is the largest hub.

This list covers advisory and outsourcing services 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 23, 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 23, 2026 86% judged on-target in blind review

8,989Companies

108,368Contacts tracked

40,493Verified emails

1,921Mobile numbers

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The 25 largest advisory and outsourcing services based in Germany

Ranked by team size

Top 25 of 8,989 advisory and outsourcing services based in Germany, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to advisory and outsourcing services: 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	NTT Data Business Solutions	Indirect evidence	Bielefeld, GermanyHQ checked Sep 23, 2026	10001+	10,733 contacts →
	Indirect evidence “We understand the business of our clients and know what it takes to transform it into the future.” Source: RevenueBase Database · checked Sep 23, 2026
2	PWC Deutschland	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 23, 2026	10001+	10,357 contacts →
	Indirect evidence “PwC is the leading auditing and consulting company in Germany.” Source: RevenueBase Database · checked Sep 23, 2026
3	Kpmg Deutschland	Indirect evidence	Berlin, GermanyHQ checked Sep 23, 2026	10001+	8,886 contacts →
	Indirect evidence “KPMG is a network of professional firms with about employees in 146 countries and territories.” Source: RevenueBase Database · checked Sep 23, 2026
4	Adesso SE	Indirect evidence	Dortmund, GermanyHQ checked Sep 23, 2026	5,001-10,000	5,332 contacts →
	Indirect evidence “The future belongs to companies that effectively translate agentic AI into value creation.” Source: RevenueBase Database · checked Sep 23, 2026
5	Accenture Dach	Partial evidence	Kronberg Im Taunus, GermanyHQ checked Sep 23, 2026	10001+	3,644 contacts →
	Partial evidence “Über Accenture: Wir sind die weltweit führenden Berater für Strategie, Management, Digitalisierung, Technologie, Outsourcing und Business Transformation.” Source: RevenueBase Database · checked Sep 23, 2026
6	BDO Germany	Partial evidence	Hamburg, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,576 contacts →
	Partial evidence “BDO is the leading entrepreneurial driven provider for audit and audit-related services, tax and business law consulting as well as advisory services.” Source: RevenueBase Database · checked Sep 23, 2026
7	RSM Ebner Stolz	Indirect evidence	Stuttgart, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,442 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 23, 2026
8	Rödl & Partner	Indirect evidence	Nurnberg, GermanyHQ checked Sep 23, 2026	5,001-10,000	1,301 contacts →
	Indirect evidence “As attorneys, tax advisers, management and IT consultants and auditors, we are present with 110 own offices in around 50 countries.” Source: RevenueBase Database · checked Sep 23, 2026
9	Horváth	Indirect evidence	Stuttgart, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,193 contacts →
	Indirect evidence “Horváth is a global, independent management consultancy with more than 1,400 employees at locations in Europe, the USA, and other global markets.” Source: RevenueBase Database · checked Sep 23, 2026
10	Porsche Consulting	Indirect evidence	Stuttgart, GermanyHQ checked Sep 23, 2026	501-1,000	988 contacts →
	Indirect evidence “As a leading consultancy for putting strategies into practice, we have a clear mission: we generate competitive advantage on the basis of measurable results.” Source: RevenueBase Database · checked Sep 23, 2026
11	WTS Deutschland	Partial evidence	München, GermanyHQ checked Sep 23, 2026	1,001-5,000	882 contacts →
	Partial evidence “WTS ist ein globaler Full-Service Anbieter für Steuerberatungsleistungen und Financial & Deal Advisory.” Source: RevenueBase Database · checked Sep 23, 2026
12	Senacor Technologies	Indirect evidence	Eschborn, GermanyHQ checked Sep 23, 2026	1,001-5,000	787 contacts →
	Indirect evidence “Senacor is part of the 25 leading IT-Consulting companies and among the Top 5 of the medium-sized IT-Service providers in Germany and runs 10 offices in Austria, Switzerland…” Source: RevenueBase Database · checked Sep 23, 2026
13	TNG Technology Consulting	Indirect evidence	Unterföhring, GermanyHQ checked Sep 23, 2026	501-1,000	773 contacts →
	Indirect evidence “TNG Technology Consulting is a values-based consulting partnership focused on high-end information technology.” Source: RevenueBase Database · checked Sep 23, 2026
14	Baker Tilly Germany	Partial evidence	Düsseldorf, GermanyHQ checked Sep 23, 2026	1,001-5,000	745 contacts →
	Partial 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 23, 2026
15	Flick Gocke Schaumburg	Partial evidence	Bonn, GermanyHQ checked Sep 23, 2026	501-1,000	651 contacts →
	Partial evidence “Flick Gocke Schaumburg is an independent partnership of lawyers, tax advisors and auditors working with more than 320 professionals from offices in Berlin, Bonn, Düsseldorf…” Source: RevenueBase Database · checked Sep 23, 2026
16	Convista	Indirect evidence	Walldorf, GermanyHQ checked Sep 23, 2026	501-1,000	553 contacts →
	Indirect evidence “Convista is one of the leading consultancies for business transformation.” Source: RevenueBase Database · checked Sep 23, 2026
17	OVB Holding AG	Partial evidence	Köln, GermanyHQ checked Sep 23, 2026	501-1,000	495 contacts →
	Partial evidence “The OVB Group, with its holding company headquartered in Cologne, is one of Europe’s leading financial advisory groups.” Source: RevenueBase Database · checked Sep 23, 2026
18	DHPG	Indirect evidence	Bonn, GermanyHQ checked Sep 23, 2026	1,001-5,000	460 contacts →
	Indirect evidence “As an interdisciplinary medium-sized tax audit, accountancy and legal advice service we guarantee all-round high-quality consultation combined with a personal component.” Source: RevenueBase Database · checked Sep 23, 2026
19	Orbis SE	Indirect evidence	Saarbrücken, GermanyHQ checked Sep 23, 2026	501-1,000	366 contacts →
	Indirect evidence “ORBIS is an international business consulting company.” Source: RevenueBase Database · checked Sep 23, 2026
20	SYCOR	Indirect evidence	Göttingen, GermanyHQ checked Sep 23, 2026	201-500	347 contacts →
	Indirect evidence “As a full-service provider, the Sycor Group covers the whole spectrum of information and communications technology.” Source: RevenueBase Database · checked Sep 23, 2026
21	Fincon Reply Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 23, 2026	201-500	337 contacts →
	Indirect evidence “Fincon Reply is a business and IT consultancy specializing in the financial services industry.” Source: RevenueBase Database · checked Sep 23, 2026
22	PKF Fasselt	Indirect evidence	Berlin, GermanyHQ checked Sep 23, 2026	501-1,000	335 contacts →
	Indirect evidence “PKF Fasselt is one of Germany’s leading mid-sized auditing and consulting firms.” Source: RevenueBase Database · checked Sep 23, 2026
23	Ecovis Deutschland	Indirect evidence	Berlin, GermanyHQ checked Sep 23, 2026	1,001-5,000	319 contacts →
	Indirect evidence “Wir bei Ecovis sind Steuerberater, Wirtschaftsprüfer, Rechtsanwälte und Unternehmensberater.” Source: RevenueBase Database · checked Sep 23, 2026
24	H&z Management Consulting	Indirect evidence	München, GermanyHQ checked Sep 23, 2026	501-1,000	285 contacts →
	Indirect evidence “Welcome to H&Z We offer more than successful strategy development.” Source: RevenueBase Database · checked Sep 23, 2026
25	Mercer Deutschland Gmbh	Indirect evidence	GermanyHQ checked Sep 23, 2026	501-1,000	260 contacts →
	Indirect evidence “Mercer believes in building brighter futures by redefining the world of work, reshaping retirement and investment outcomes, and unlocking real health and well-being.” Source: RevenueBase Database · checked Sep 23, 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: advisory and outsourcing services. 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 advisory and outsourcing services.
Partial evidence: Its own public description names part of advisory and outsourcing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advisory and outsourcing services. 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 8,989 advisory and outsourcing services based in Germany

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Advisory and outsourcing services based in Germany at a glance

As of Sep 23, 2026

37.4%Verified-email coverage

1.8%Mobile-number coverage

12.1Average contacts per company

1-10Median size (employees)

6.8%Largest-city concentration · Berlin

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

5,492

11-50

2,476

51-200

608

201-500

108

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 25.0d

30,1800–30

9,53131–60

51661–90

2090–180

246180+

Company record updated

Median 68.0d

00–30

36,83931–60

47,03161–90

18,33890–180

6,160180+

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 advisory and outsourcing services, 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 “advisory and outsourcing services”. 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 advisory and outsourcing services), 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 advisory and outsourcing services, 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, 40,493 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 23, 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.

Advisory and outsourcing services by metro

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 advisory and outsourcing services, 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 advisory and outsourcing services are there based in Germany?

RevenueBase identified 8,989 advisory and outsourcing services 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?

NTT Data Business Solutions, headquartered in Bielefeld, tops this list with the largest team on record.

Which city has the most advisory and outsourcing services?

Berlin leads with 608 headquartered companies, followed by Hamburg (513) and Munchen (394).

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 40,493 verified decision-maker contacts tracked across these 8,989 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 23, 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.