Company lists · Data refreshed September 2026

Top 25 Independent accounting firms based in Luxembourg

Name: Independent accounting firms based in Luxembourg
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 26, 2026 66 companies tracked

RevenueBase identified 66 independent accounting firms headquartered in Luxembourg as of September 2026 and tracks 1,276 professional contacts across them, including 638 with verified work emails and 15 with mobile numbers. Luxembourg is the largest hub.

This list covers independent accounting firms headquartered in Luxembourg, 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 26, 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 26, 2026 86% judged on-target in blind review

66Companies

1,276Contacts tracked

638Verified emails

15Mobile numbers

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The 25 largest independent accounting firms based in Luxembourg

Ranked by team size

Top 25 of 66 independent accounting firms based in Luxembourg, ranked by team size, largest first. Data refreshed Sep 26, 2026. RevenueBase Smart Search rates how each company's information relates to independent accounting 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	BDO Luxembourg	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	501-1,000	600 contacts →
	Indirect evidence “BDO Luxembourg is one of the largest firms of accountants, auditors and consultants in Luxembourg.” Source: RevenueBase Database · checked Sep 26, 2026
2	In Extenso Belux	Indirect evidence	Windhof, LuxembourgHQ checked Sep 26, 2026	51-200	124 contacts →
	Indirect evidence “Vous êtes chef d’entreprise, artisan, commerçant, professionnels libéral ou du secteur financier?” Source: RevenueBase Database · checked Sep 26, 2026
3	Atwell	Partial evidence	Hesperange, LuxembourgHQ checked Sep 26, 2026	51-200	44 contacts →
	Partial evidence “ATWELL is a chartered accountant firm ("expert-comptable") and certified accounting firm ("cabinet de révision agréé") which was founded in 2012.” Source: RevenueBase Database · checked Sep 26, 2026
4	PKF Audit & Conseil Luxembourg	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	11-50	40 contacts →
	Indirect evidence “PKF Audit & Conseil est devenu un cabinet indépendant et un membre du réseau PKF International depuis 2018.” Source: RevenueBase Database · checked Sep 26, 2026
5	GT Fiduciaires S.A	Partial evidence	LuxembourgHQ checked Sep 26, 2026	51-200	26 contacts →
	Partial evidence “Thanks to a team of specialists in the field of accounting, tax, social security and consulting, we assist SMEs and businesses of all sizes in the management of their daily lives.” Source: RevenueBase Database · checked Sep 26, 2026
6	A3t S.A	Indirect evidence	Belvaux, LuxembourgHQ checked Sep 26, 2026	11-50	21 contacts →
	Indirect evidence “We enable clients operating in all sectors to create and manage growth by providing them timely, accurate and prudent advice on audit, accountancy, corporate and financial…” Source: RevenueBase Database · checked Sep 26, 2026
7	Baker Tilly Audit & Assurance S.À R.L	Indirect evidence	Howald, LuxembourgHQ checked Sep 26, 2026	11-50	19 contacts →
	Indirect evidence “Baker Tilly Audit & Assurance s.à r.l, is a fully licensed registered auditor that handles all audit activities, such as: auditing annual accounts and consolidated annual…” Source: RevenueBase Database · checked Sep 26, 2026
8	Efitax Expertises	Indirect evidence	Steinfort, LuxembourgHQ checked Sep 26, 2026	11-50	17 contacts →
	Indirect evidence “Cabinet d’expertise comptable et fiscale spécialisé dans le support comptable, financier et fiscal aux PME et aux particuliers.” Source: RevenueBase Database · checked Sep 26, 2026
9	Fiscogest Sàrl	Indirect evidence	Bascharage, LuxembourgHQ checked Sep 26, 2026	11-50	13 contacts →
	Indirect evidence “La société Fiscogest S.à r.l, créée en 2007, est une équipe de professionnels jeunes et dynamiques vous garantissant un service de confiance personnalisé.” Source: RevenueBase Database · checked Sep 26, 2026
10	Fiduciaire DES P.M.E	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	11-50	12 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 26, 2026
11	NOW Corporate Solutions	Partial evidence	Howald, LuxembourgHQ checked Sep 26, 2026	1-10	11 contacts →
	Partial evidence “NoW Corporate Solutions is a new generation accounting firm providing specialized bespoke services and guidance for business firms as well as for real estate, private equity, or…” Source: RevenueBase Database · checked Sep 26, 2026
12	Memola & Partners S.A	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	11-50	11 contacts →
	Indirect evidence “Memola & Partners, Société Anonyme de conseil comptable, fiscal et social a été créée en 1994 et existe sous cette forme depuis 2007.” Source: RevenueBase Database · checked Sep 26, 2026
13	B.A. Fiduciaire	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	11-50	11 contacts →
	Indirect evidence “B.A.” Source: RevenueBase Database · checked Sep 26, 2026
14	Corexperts S.A	Indirect evidence	Rumelange, LuxembourgHQ checked Sep 26, 2026	11-50	11 contacts →
	Indirect evidence “Implanté à Luxembourg, notre cabinet dispose d'un réseau et d'une expertise transfrontalière.” Source: RevenueBase Database · checked Sep 26, 2026
15	Accounting, Tax, Expertise & Solutions A.T.E.S	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	11-50	8 contacts →
	Indirect evidence “Service de comptabilité pour PME, indépendants et particuliers.” Source: RevenueBase Database · checked Sep 26, 2026
16	IBS & Partners	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	11-50	7 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 26, 2026
17	Fiduciaire Pierre Kraus & Associés S. À R.L.	Indirect evidence	Mersch, LuxembourgHQ checked Sep 26, 2026	11-50	7 contacts →
	Indirect evidence “Nous sommes un cabinet d'expertise comptable, membre de l'ordre des experts comptables, établi a Mersch depuis 1986.” Source: RevenueBase Database · checked Sep 26, 2026
18	FIDUO	Strong evidence	LuxembourgHQ checked Sep 26, 2026	11-50	6 contacts →
	Strong evidence “Fiduo is an independent accounting & advisory firm located in the heart of Luxembourg-city.” Source: RevenueBase Database · checked Sep 26, 2026
19	Gefco SA Fiduciaire	Indirect evidence	Ehlange/mess, LuxembourgHQ checked Sep 26, 2026	1-10	6 contacts →
	Indirect evidence “GEFCO SA a été fondé en 1993.” Source: RevenueBase Database · checked Sep 26, 2026
20	JW Partner	Partial evidence	Windhof (koerich), LuxembourgHQ checked Sep 26, 2026	1-10	6 contacts →
	Partial evidence “ACCOUNTING - TAX - CORPORATE - CONSULTING JW Partner combines a depth of knowledge and recognized expertise within a nimble structure to spare your company the bureaucracy and…” Source: RevenueBase Database · checked Sep 26, 2026
21	Euraudit Consult S.A	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	1-10	6 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 26, 2026
22	Fideis	Indirect evidence	Clemency, LuxembourgHQ checked Sep 26, 2026	1-10	5 contacts →
	Indirect evidence “Fideis est une société luxembourgeoise d’expertise comptable aux services des PME, tant au Luxembourg qu’en Belgique.” Source: RevenueBase Database · checked Sep 26, 2026
23	Fidalpha S.A	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	1-10	4 contacts →
	Indirect evidence “Fidalpha SA a été créée à l’initiative de Monsieur Marcel Krier.” Source: RevenueBase Database · checked Sep 26, 2026
24	Fidcoserv S.À R.L	Indirect evidence	LuxembourgHQ checked Sep 26, 2026	1-10	3 contacts →
	Indirect evidence “Etablie à Luxembourg depuis sa création en 1993, Fidcoserv Sàrl est un cabinet comptable à taille humaine au service des petites et moyennes entreprises (PME et PMI).” Source: RevenueBase Database · checked Sep 26, 2026
25	JD TAX & Services	Indirect evidence	Wilz, LuxembourgHQ checked Sep 26, 2026	1-10	3 contacts →
	Indirect evidence “Our firm is established in the Grand Duchy of Luxembourg and in Belgium.” Source: RevenueBase Database · checked Sep 26, 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: independent accounting 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 independent accounting firms.
Partial evidence: Its own public description names part of independent accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name independent accounting 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 66 independent accounting firms based in Luxembourg

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Independent accounting firms based in Luxembourg at a glance

As of Sep 26, 2026

50.0%Verified-email coverage

1.2%Mobile-number coverage

19.3Average contacts per company

1-10Median size (employees)

42.4%Largest-city concentration · Luxembourg

Sep 26, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

Freshness & accuracy

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

Email last verified

Median 28.0d

4140–30

21531–60

861–90

090–180

1180+

Company record updated

Median 70.0d

00–30

41631–60

46461–90

32790–180

69180+

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 independent accounting 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 Luxembourg whose own description of what they do matches “independent accounting 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 independent accounting 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 independent accounting firms, and records with no verified work email. Companies headquartered outside Luxembourg 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, 638 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 26, 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 independent accounting 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 independent accounting firms are there based in Luxembourg?

RevenueBase identified 66 independent accounting firms headquartered in Luxembourg 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?

BDO Luxembourg, headquartered in Luxembourg, tops this list with the largest team on record.

Which city has the most independent accounting firms?

Luxembourg leads with 28 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 638 verified decision-maker contacts tracked across these 66 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 26, 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.