Company lists · Data refreshed September 2026

Top 23 Accounting systems consulting firms based in Luxembourg

RevenueBase identified 45 accounting systems consulting firms headquartered in Luxembourg as of September 2026 and tracks 1,004 professional contacts across them, including 556 with verified work emails. Luxembourg is the largest hub.

This list covers accounting systems consulting 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 21, 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 21, 2026 86% judged on-target in blind review
45Companies
1,004Contacts tracked
556Verified emails
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The 23 largest accounting systems consulting firms based in Luxembourg

Ranked by team size
Top 23 of 45 accounting systems consulting firms based in Luxembourg, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to accounting systems 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLuxembourgHQ checked Sep 21, 2026501-1,000600 contacts →

Indirect evidence

“BDO Luxembourg is one of the largest firms of accountants, auditors and consultants in Luxembourg.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceWindhof, LuxembourgHQ checked Sep 21, 202651-200124 contacts →

Indirect evidence

“Vous êtes chef d’entreprise, artisan, commerçant, professionnels libéral ou du secteur financier?”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceHesperange, LuxembourgHQ checked Sep 21, 202651-20044 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 21, 2026
4Indirect evidenceSteinfort, LuxembourgHQ checked Sep 21, 202611-5017 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 21, 2026
5Indirect evidenceLuxembourgHQ checked Sep 21, 202611-5012 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 21, 2026
6Partial evidenceHowald, LuxembourgHQ checked Sep 21, 20261-1011 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 21, 2026
7Indirect evidenceLuxembourgHQ checked Sep 21, 202611-5011 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 21, 2026
8Indirect evidenceLuxembourgHQ checked Sep 21, 202611-5011 contacts →

Indirect evidence

“B.A.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceRumelange, LuxembourgHQ checked Sep 21, 202611-5011 contacts →

Indirect evidence

“Implanté à Luxembourg, notre cabinet dispose d'un réseau et d'une expertise transfrontalière.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceLuxembourgHQ checked Sep 21, 202611-508 contacts →

Indirect evidence

“Service de comptabilité pour PME, indépendants et particuliers.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceLuxembourgHQ checked Sep 21, 202611-507 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 21, 2026
12Indirect evidenceMersch, LuxembourgHQ checked Sep 21, 202611-507 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 21, 2026
13Indirect evidenceEhlange/mess, LuxembourgHQ checked Sep 21, 20261-106 contacts →

Indirect evidence

“GEFCO SA a été fondé en 1993.”

Source: RevenueBase Database · checked Sep 21, 2026
14Strong evidenceWindhof (koerich), LuxembourgHQ checked Sep 21, 20261-106 contacts →

Strong 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 21, 2026
15Indirect evidenceLuxembourgHQ checked Sep 21, 20261-106 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 21, 2026
16Indirect evidenceClemency, LuxembourgHQ checked Sep 21, 20261-105 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 21, 2026
17Partial evidenceLuxembourgHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“Née d'une association entre amis Experts-comptables formés au sein des grands cabinets d'audit et de conseil Luxembourgeois, The Accounting Brothers est un cabinet d'expert…”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceLuxembourgHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“Luxat, a Luxembourg-based IT consulting firm, specializes in a range of services tailored to meet the evolving needs of its clients.”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceWilz, LuxembourgHQ checked Sep 21, 20261-103 contacts →

Indirect evidence

“Our firm is established in the Grand Duchy of Luxembourg and in Belgium.”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceEsch-sur-alzette, LuxembourgHQ checked Sep 21, 202611-502 contacts →

Partial evidence

“Since its establishment in 2007, GSL has proven itself as a trusted partner in the fields of accounting expertise, auditing, and management.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceLuxembourgHQ checked Sep 21, 20261-102 contacts →

Indirect evidence

“On behalf of its clients, GALUX produces or checks accounts, balance sheets, provisions and tax returns.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceLuxembourgHQ checked Sep 21, 20261-102 contacts →

Indirect evidence

“ICCS (Luxembourg) S.A.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceLuxembourgHQ checked Sep 21, 202611-501 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026

Showing 23 of 45 accounting systems consulting firms based in Luxembourg

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Accounting systems consulting firms based in Luxembourg at a glance

As of Sep 21, 2026
55.4%Verified-email coverage
22.3Average contacts per company
1-10Median size (employees)
48.9%Largest-city concentration · Luxembourg
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
25
11-50
16
51-200
3
501-1,000
1

Email recency for this list is measured worldwide rather than for Luxembourg, so it is reported there. Company counts and contact totals on this page are exact for Luxembourg, over 45 companies.

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 systems 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 Luxembourg whose own description of what they do matches “accounting systems 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 accounting systems 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 accounting systems consulting 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, 556 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 21, 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 systems 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 accounting systems consulting firms are there based in Luxembourg?

RevenueBase identified 45 accounting systems consulting 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 accounting systems consulting firms?

Luxembourg leads with 22 headquartered companies, followed by Bertrange (2) 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 556 verified decision-maker contacts tracked across these 45 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 21, 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.