Company lists · Data refreshed September 2026

Top 20 Association business consulting firms based in Luxembourg

Name: Association business consulting firms based in Luxembourg
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 57 companies tracked

RevenueBase identified 57 company matches for association business consulting firms associated with Luxembourg as of September 2026 and tracks 473 professional contacts across them, including 168 with verified work emails and 9 with mobile numbers. Luxembourg is the largest hub.

This list covers company matches for association business consulting firms associated with Luxembourg, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 23, 2026 How this list was built

57Companies

473Contacts tracked

168Verified emails

9Mobile numbers

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The 20 largest association business consulting firms based in Luxembourg

Ranked by team size

Top 20 of 57 company matches for association business consulting firms based in Luxembourg, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	In Extenso Belux	Exact match	Windhof, LuxembourgHQ recorded Sep 23, 2026	51-200	124 contacts →
	Exact match “Vous êtes chef d’entreprise, artisan, commerçant, professionnels libéral ou du secteur financier?” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	IQ Solutions Luxembourg	Exact match	3364 Leudelange, LuxembourgHQ recorded Sep 23, 2026	51-200	73 contacts →
	Exact match “Solutions for business partners - Independent solutions for changing times IQ Solutions is one of the largest players in the Luxembourg financial market and offer consulting…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	OYESK	Exact match	Bertrange, LuxembourgHQ recorded Sep 23, 2026	51-200	18 contacts →
	Exact match “Welcome to Oyesk!” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	STRAS	Exact match	LuxembourgHQ recorded Sep 23, 2026	11-50	14 contacts →
	Exact match “At STRAS, we understand that navigating the complex landscape of business requires more than just solutions; it demands a strategic approach.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	Fiduciaire DES P.M.E	Exact match	LuxembourgHQ recorded Sep 23, 2026	11-50	12 contacts →
	Exact match “L’expertise comptable, le conseil fiscal, l’administration et la gestion du personnel pour suivre la rentabilité de l’entreprise et optimiser la prise de décision.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	Memola & Partners S.A	Exact match	LuxembourgHQ recorded Sep 23, 2026	11-50	11 contacts →
	Exact match “Memola & Partners, Société Anonyme de conseil comptable, fiscal et social a été créée en 1994 et existe sous cette forme depuis 2007.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	B.A. Fiduciaire	Exact match	LuxembourgHQ recorded Sep 23, 2026	11-50	11 contacts →
	Exact match “B.A.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Corexperts S.A	Exact match	Rumelange, LuxembourgHQ recorded Sep 23, 2026	11-50	11 contacts →
	Exact match “Implanté à Luxembourg, notre cabinet dispose d'un réseau et d'une expertise transfrontalière.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Axon Advisory & Consulting	Exact match	Flaxweiler, LuxembourgHQ recorded Sep 23, 2026	11-50	10 contacts →
	Exact match “We offer unorthodox management advisory and consulting services.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	Luxpayroll	Exact match	Bertrange, LuxembourgHQ recorded Sep 23, 2026	51-200	9 contacts →
	Exact match “LuxPayroll is a consulting firm that proposes highly skilled consultants to the private and public sector in Luxembourg.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	IBS & Partners	Exact match	LuxembourgHQ recorded Sep 23, 2026	11-50	7 contacts →
	Exact match “Forte d’une expérience de plus de 30 ans dans le monde des affaires, IBS & Partners a acquis les compétences et connaissances en expertises comptable et fiscale et en…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Fiduciaire Pierre Kraus & Associés S. À R.L.	Exact match	Mersch, LuxembourgHQ recorded Sep 23, 2026	11-50	7 contacts →
	Exact match “Nous sommes un cabinet d'expertise comptable, membre de l'ordre des experts comptables, établi a Mersch depuis 1986.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	FIDUO	Exact match	LuxembourgHQ recorded Sep 23, 2026	11-50	6 contacts →
	Exact match “Fiduo is an independent accounting & advisory firm located in the heart of Luxembourg-city.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Gefco SA Fiduciaire	Exact match	Ehlange/mess, LuxembourgHQ recorded Sep 23, 2026	1-10	6 contacts →
	Exact match “GEFCO SA a été fondé en 1993.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Euraudit Consult S.A	Exact match	LuxembourgHQ recorded Sep 23, 2026	1-10	6 contacts →
	Exact match “Euraudit Consult est un cabinet d’Expertise-Comptable pour les entreprises et les indépendants à la recherche d’une expertise et de solutions de haute qualité.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Leonard Group Luxembourg	Exact match	Roeser, LuxembourgHQ recorded Sep 23, 2026	1-10	3 contacts →
	Exact match “Le cabinet Leonard propose aux chefs d’entreprises, artisans, commerçants, professions libérales et responsables d’associations un service professionnel complet.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Galux S.À R.L	Exact match	LuxembourgHQ recorded Sep 23, 2026	1-10	2 contacts →
	Exact match “On behalf of its clients, GALUX produces or checks accounts, balance sheets, provisions and tax returns.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Gojusan	Exact match	LuxembourgHQ recorded Sep 23, 2026	1-10	2 contacts →
	Exact match “Bringing 30 years experience in asset servicing, post acquisition integrations, competition analysis, strategic development, GoToMarket strategies, RFP & RFI” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Arpegium Services	Exact match	LuxembourgHQ recorded Sep 23, 2026	1-10	1 contacts →
	Exact match “ARPEGIUM Sàrl is an advisory firm based in Luxembourg.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	Vinceo Solutions	Exact match	LuxembourgHQ recorded Sep 23, 2026	1-10	1 contacts →
	Exact match “VINCEO SOLUTIONS accompagne les professionnels du secteur financier (assurance, banque et asset management) dans leurs différents projets et défis, au travers d'approches adaptées…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “association business consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 20 of 57 association business consulting firms based in Luxembourg

See the full list, filter by size, metro and specialty, and access 168 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Association business consulting firms based in Luxembourg at a glance

As of Sep 23, 2026

35.5%Verified-email coverage

1.9%Mobile-number coverage

8.3Average contacts per company

1-10Median size (employees)

50.9%Largest-city concentration · Luxembourg

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Freshness & accuracy

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

Email last verified

Median 25.0d

1290–30

3731–60

261–90

090–180

0180+

Company record updated

Median 77.0d

00–30

14031–60

21361–90

9890–180

22180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Luxembourg whose business descriptions match “association business consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 168 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “association business consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many association business consulting firms are there based in Luxembourg?

RevenueBase identified 57 company matches for association business consulting firms associated with Luxembourg as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

In Extenso Belux tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most association business consulting firms?

Luxembourg leads with 29 company records, followed by Bertrange (3) and Esch-Sur-Alzette (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 168 professional contacts with verified work emails tracked across these 57 companies; direct dials are available where recorded.

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 SmartSearch, 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.