Company lists · Data refreshed September 2026

Top 25 Accounting firms specializing in startups based in Luxembourg

Name: Accounting firms specializing in startups based in Luxembourg
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 70 companies tracked

RevenueBase identified 70 accounting firms specializing in startups headquartered in Luxembourg as of September 2026 and tracks 334 professional contacts across them, including 137 with verified work emails and 7 with mobile numbers. Luxembourg is the largest hub.

This list covers accounting firms specializing in startups 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 28, 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 28, 2026 86% judged on-target in blind review

70Companies

334Contacts tracked

137Verified emails

7Mobile numbers

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The 25 largest accounting firms specializing in startups based in Luxembourg

Ranked by team size

Top 25 of 70 accounting firms specializing in startups based in Luxembourg, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to accounting firms specializing in startups: 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	Atwell	Partial evidence	Hesperange, LuxembourgHQ checked Sep 28, 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 28, 2026
2	Neoviaq	Partial evidence	Weiswampach, LuxembourgHQ checked Sep 28, 2026	51-200	34 contacts →
	Partial evidence “From the creation of your company to the management of your accounting, finances, payroll, trademark protection and more!” Source: RevenueBase Database · checked Sep 28, 2026
3	Efitax Expertises	Indirect evidence	Steinfort, LuxembourgHQ checked Sep 28, 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 28, 2026
4	Fiscogest Sàrl	Indirect evidence	Bascharage, LuxembourgHQ checked Sep 28, 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 28, 2026
5	Fiduciaire DES P.M.E	Indirect evidence	LuxembourgHQ checked Sep 28, 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 28, 2026
6	NOW Corporate Solutions	Partial evidence	Howald, LuxembourgHQ checked Sep 28, 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 28, 2026
7	B.A. Fiduciaire	Indirect evidence	LuxembourgHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “B.A.” Source: RevenueBase Database · checked Sep 28, 2026
8	Corexperts S.A	Indirect evidence	Rumelange, LuxembourgHQ checked Sep 28, 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 28, 2026
9	Accounting, Tax, Expertise & Solutions A.T.E.S	Indirect evidence	LuxembourgHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Service de comptabilité pour PME, indépendants et particuliers.” Source: RevenueBase Database · checked Sep 28, 2026
10	IBS & Partners	Indirect evidence	LuxembourgHQ checked Sep 28, 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 28, 2026
11	Fiduciaire Pierre Kraus & Associés S. À R.L.	Indirect evidence	Mersch, LuxembourgHQ checked Sep 28, 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 28, 2026
12	FIDUO	Partial evidence	LuxembourgHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “Fiduo is an independent accounting & advisory firm located in the heart of Luxembourg-city.” Source: RevenueBase Database · checked Sep 28, 2026
13	Gefco SA Fiduciaire	Indirect evidence	Ehlange/mess, LuxembourgHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “GEFCO SA a été fondé en 1993.” Source: RevenueBase Database · checked Sep 28, 2026
14	JW Partner	Partial evidence	Windhof (koerich), LuxembourgHQ checked Sep 28, 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 28, 2026
15	Euraudit Consult S.A	Indirect evidence	LuxembourgHQ checked Sep 28, 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 28, 2026
16	Fideis	Indirect evidence	Clemency, LuxembourgHQ checked Sep 28, 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 28, 2026
17	The Accounting Brothers	Partial evidence	LuxembourgHQ checked Sep 28, 2026	1-10	5 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 28, 2026
18	Fiduciaire Jean-Marc Faber	Indirect evidence	LuxembourgHQ checked Sep 28, 2026	11-50	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 28, 2026
19	Fidcoserv S.À R.L	Indirect evidence	LuxembourgHQ checked Sep 28, 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 28, 2026
20	Fiduciaire Schaeffer & Partners	Indirect evidence	LuxembourgHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “Derrière chaque chiffre, il y a une histoire d'entreprise.” Source: RevenueBase Database · checked Sep 28, 2026
21	Fiduciaire Schneider & Associes	Partial evidence	Niederanven, LuxembourgHQ checked Sep 28, 2026	11-50	3 contacts →
	Partial evidence “SCHNEIDER LINSTER FIDUCIAIRE offers a full range of accounting, tax and business services for local and international clients.” Source: RevenueBase Database · checked Sep 28, 2026
22	JD TAX & Services	Indirect evidence	Wilz, LuxembourgHQ checked Sep 28, 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 28, 2026
23	GSL Fiduciaire	Partial evidence	Esch-sur-alzette, LuxembourgHQ checked Sep 28, 2026	11-50	2 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 28, 2026
24	Fiduciaire Feyder & Associés	Partial evidence	Junglinster, LuxembourgHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Fiduciaire Feyder & Associés is an accounting company funded in 2017, based in Junglinster.” Source: RevenueBase Database · checked Sep 28, 2026
25	Andreasen Accounting Services	Partial evidence	Troisvierges, LuxembourgHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Whether you are a corporate or private client, we have designed our accounting, tax, advisory and operational services to sustain your success.” Source: RevenueBase Database · checked Sep 28, 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: accounting firms specializing in startups. 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 accounting firms specializing in startups.
Partial evidence: Its own public description names part of accounting firms specializing in startups, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting firms specializing in startups. 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 70 accounting firms specializing in startups based in Luxembourg

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Accounting firms specializing in startups based in Luxembourg at a glance

As of Sep 28, 2026

41.0%Verified-email coverage

2.1%Mobile-number coverage

4.8Average contacts per company

1-10Median size (employees)

38.6%Largest-city concentration · Luxembourg

Sep 28, 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 30.0d

730–30

5831–60

661–90

090–180

0180+

Company record updated

Median 81.0d

00–30

9131–60

11261–90

10890–180

23180+

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 firms specializing in startups, 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 firms specializing in startups”. 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 firms specializing in startups), 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 firms specializing in startups, 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, 137 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 28, 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.

Accounting firms specializing in startups by metro

Accounting firms specializing in startups in Luxembourg27

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 firms specializing in startups, 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 firms specializing in startups are there based in Luxembourg?

RevenueBase identified 70 accounting firms specializing in startups 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?

Atwell, headquartered in Hesperange, tops this list with the largest team on record.

Which city has the most accounting firms specializing in startups?

Luxembourg leads with 27 headquartered companies, followed by Esch-Sur-Alzette (4) and Bertrange (3).

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 137 verified decision-maker contacts tracked across these 70 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 28, 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.