Company lists · Data refreshed September 2026
Top 25 Company accounting firms based in Luxembourg
RevenueBase identified 110 company accounting firms headquartered in Luxembourg as of September 2026 and tracks 1,421 professional contacts across them, including 646 with verified work emails and 18 with mobile numbers. Luxembourg is the largest hub.
This list covers company 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 24, 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.
The 25 largest company accounting firms based in Luxembourg
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 600 contacts → | ||||
Indirect evidence “BDO Luxembourg is one of the largest firms of accountants, auditors and consultants in Luxembourg.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 124 contacts → | ||||
Indirect evidence “Vous êtes chef d’entreprise, artisan, commerçant, professionnels libéral ou du secteur financier?” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 44 contacts → | ||||
Strong 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 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 29 contacts → | ||||
Indirect evidence “Service comptable : •Tenue de la comptabilité •Gestion et suivi de la comptabilité clients et fournisseurs •Établissement des comptes annuels, préparation des AGO, AGE et…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 26 contacts → | ||||
Strong 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 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 contacts → | ||||
Indirect evidence “Fiduciaire Fernand Faber was incorporated in 1952 by Mr.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 contacts → | ||||
Strong evidence “Since 1995, FIDUCIAIRE EUROLUX offers the following professional services: High-quality accounting and internal audit, characterised by our many years of experience; preparation…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 11 contacts → | ||||
Strong 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 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Indirect evidence “B.A.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Indirect evidence “Implanté à Luxembourg, notre cabinet dispose d'un réseau et d'une expertise transfrontalière.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Indirect evidence “Service de comptabilité pour PME, indépendants et particuliers.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 contacts → | ||||
Indirect evidence “Your TACS, now part of Hawksford, is a Luxembourg company authorized as “Expert-Comptable" and is member of the “OEC – Ordre des experts-comptables”, the Luxembourg professional…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 contacts → | ||||
Indirect evidence “Key Partners is a new independent player on the local financial market and is a duly registered Chartered Accountant («Ordre des Experts-Comptables »).” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Indirect evidence “GEFCO SA a été fondé en 1993.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 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 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Strong 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 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 contacts → | ||||
Indirect evidence “Fiduciaire Jean-Marc Faber is a member of the Luxembourg Institute of Chartered Accountants, with 25 years of experience in a constantly and demanding environment.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
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: company 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 company accounting firms.
- Partial evidence
- Its own public description names part of company accounting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name company 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 110 company accounting firms based in Luxembourg
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Company accounting firms based in Luxembourg at a glance
As of Sep 24, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 26.0dCompany record updated
Median 69.0dHow 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 company 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 “company 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 company 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 company 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, 646 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 24, 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.
Company accounting firms by metro
- Company accounting firms in Luxembourg51
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 company 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 company accounting firms are there based in Luxembourg?
RevenueBase identified 110 company 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 company accounting firms?
Luxembourg leads with 51 headquartered companies, followed by Bertrange (5) and Esch-Sur-Alzette (5).
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 646 verified decision-maker contacts tracked across these 110 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 24, 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.
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