Company lists · Data verified August 2026

Top 10 Accounting services outsourcing companies based in Luxembourg

Name: Accounting services outsourcing companies based in Luxembourg
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 27 companies tracked

There are 27 accounting services outsourcing companies headquartered in Luxembourg (RevenueBase, August 2026). RevenueBase tracks 732 professional contacts across them, including 386 with verified work emails and 11 with mobile numbers. Luxembourg is the largest hub.

This list covers accounting services outsourcing companies headquartered in Luxembourg, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

27Companies

732Contacts tracked

386Verified emails

11Mobile numbers

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The 10 largest accounting services outsourcing companies based in Luxembourg

Ranked by team size

Top 10 of 27 accounting services outsourcing companies based in Luxembourg, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	BDO Luxembourg	Diekirch	501-1,000	606	345
2	Atwell	Hesperange	51-200	46	25
3	Bureau Comptable Faber & Associés S.À R.L	Petange Canton Of Esch-Sur-Alzette	1-10	29	2
4	JW Partner	Windhof Koerich	1-10	6	3
5	Fidcoserv S.À R.L	Luxembourg	1-10	3	3
6	JD TAX & Services	Wilz	1-10	3	2
7	GSL Fiduciaire	Esch-Sur-Alzette	11-50	2	2
8	Fiduciaire Livan	n/a	1-10	2	2
9	Zehren Fiduciaire SA	Frisange	1-10	2	1
10	Carnin S.A	Steinfort	1-10	1	1

Showing 10 of 27 accounting services outsourcing companies based in Luxembourg

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 386 reachable decision-makers.

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Accounting services outsourcing companies based in Luxembourg at a glance

As of Aug 28, 2026

1-10Median size (employees)

LuxembourgLargest hub · 5 HQs

11Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

Accounting services outsourcing companies by metro

Metro	Companies
Accounting services outsourcing companies in Luxembourg	5
Accounting services outsourcing companies in Esch-Sur-Alzette	2
Accounting services outsourcing companies in Frisange	1
Accounting services outsourcing companies in Windhof Koerich	1
Accounting services outsourcing companies in Steinfort	1
Accounting services outsourcing companies in Wilz	1
Accounting services outsourcing companies in Livange	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “accounting services outsourcing companies”, with match quality audited by blind human judging, and headquartered in Luxembourg.
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: Contact records re-verify on a rolling cadence; 3 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many accounting services outsourcing companies are there based in Luxembourg?

There are 27 accounting services outsourcing companies headquartered in Luxembourg as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most accounting services outsourcing companies?

Luxembourg leads with 5 headquartered companies, followed by Esch-Sur-Alzette (2) and Frisange (1).

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 386 verified decision-maker contacts tracked across these 27 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.