Company lists · Data refreshed September 2026

Top 25 Advisory and outsourcing services based in Luxembourg

RevenueBase identified 374 company matches for advisory and outsourcing services associated with Luxembourg as of September 2026 and tracks 8,194 professional contacts across them, including 3,056 with verified work emails and 148 with mobile numbers. Luxembourg is the largest hub.

This list covers company matches for advisory and outsourcing services associated with Luxembourg, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 23, 2026 How this list was built
374Companies
8,194Contacts tracked
3,056Verified emails
148Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest advisory and outsourcing services based in Luxembourg

Ranked by team size
Top 25 of 374 company matches for advisory and outsourcing services based in Luxembourg, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLuxembourgHQ recorded Sep 23, 20261,001-5,0003,413 contacts →

Exact match

“PwC Luxembourg is the largest professional services firm in Luxembourg with over 3,600 people employed from 90 different countries.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2Exact matchLuxembourgHQ recorded Sep 23, 2026501-1,000600 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3Exact matchBertrange, LuxembourgHQ recorded Sep 23, 20261,001-5,000546 contacts →

Exact match

“SOA People is one of Europe’s leading consulting and services groups specializing in SAP solutions.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4Exact matchSenningerberg, LuxembourgHQ recorded Sep 23, 202651-200242 contacts →

Exact match

“We are a high-end independent advisory firm offering a comprehensive and integrated range of direct and indirect tax solutions, as well as corporate finance, transfer pricing and…”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5Exact matchLuxembourgHQ recorded Sep 23, 2026n/a234 contacts →

Exact match

“Our story begins in 2004 with the creation of the advisory firm ATOZ Tax Advisers.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6Exact matchLuxembourgHQ recorded Sep 23, 2026201-500226 contacts →

Exact match

“Taleo is a global independent management and delivery advisory group.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7Exact matchLuxembourgHQ recorded Sep 23, 202651-200134 contacts →

Exact match

“About Arendt - Regulatory & Consulting We help clients remain compliant while running a profitable business.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8Exact matchWindhof, LuxembourgHQ recorded Sep 23, 202651-200124 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9Exact matchBertrange, LuxembourgHQ recorded Sep 23, 202651-20074 contacts →

Exact match

“Palana is an advisory and service firm focusing on Asset & Wealth Management and Asset Servicing.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10Exact match3364 Leudelange, LuxembourgHQ recorded Sep 23, 202651-20073 contacts →

Exact match

“Solutions for business partners - Independent solutions for changing times IQ Solutions is one of the largest players in the Luxembourg financial market and offer consulting…”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11Exact matchKockelscheuer, LuxembourgHQ recorded Sep 23, 202651-20055 contacts →

Exact match

“Alcyone Consulting propose à ses clients Grand Compte une expertise reconnue dans les métiers de l'IT, Gouvernance, Compliance et se distingue par le Savoir-Faire et Savoir-Être…”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12Exact matchBertrange, LuxembourgHQ recorded Sep 23, 202611-5053 contacts →

Exact match

“HB Fiduciaire, based in Bertrange, Luxembourg, offers accounting, taxation, remuneration, and human resources services for businesses.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13Exact matchLuxembourgHQ recorded Sep 23, 202651-20043 contacts →

Exact match

“Hamlet Consulting Luxembourg is a dynamic European consulting company based in the Grand Duchy of Luxembourg.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14Exact matchLuxembourgHQ recorded Sep 23, 202611-5038 contacts →

Exact match

“Founded in 2007, Gate-16 is a consulting firm specialized in IT consultancy, IT transitions & operations, as well as recruitment and HR Services.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15Exact matchHesperange, LuxembourgHQ recorded Sep 23, 202611-5036 contacts →

Exact match

“Today’s regulatory environment is becoming more and more complex and challenging.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16Exact matchWeiswampach, LuxembourgHQ recorded Sep 23, 202651-20034 contacts →

Exact match

“From the creation of your company to the management of your accounting, finances, payroll, trademark protection and more!”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17Exact matchLuxembourgHQ recorded Sep 23, 2026501-1,00031 contacts →

Exact match

“Square Management Luxembourg is an international management & business consultancy firm, specialized in the financial sector, with offices in Luxembourg, Brussels and Paris.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18Exact matchBertrange, LuxembourgHQ recorded Sep 23, 202611-5031 contacts →

Exact match

“Hoche Partners is a growing independent global service provider of company secretarial and fiduciary services.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19Exact matchWindhof, LuxembourgHQ recorded Sep 23, 202611-5024 contacts →

Exact match

“Notre équipe composée d’experts-comptables, comptables, gestionnaires de salaires, d’un secrétariat social et d’assistantes administratives travaillent ensemble pour favoriser la…”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20Exact matchLivange, LuxembourgHQ recorded Sep 23, 202611-5023 contacts →

Exact match

“Leverage Consulting provides Advisory and sourcing services to Financial and Insurance organisations in their IT transformation projects.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21Exact matchSenningerberg, LuxembourgHQ recorded Sep 23, 20261,001-5,00023 contacts →

Exact match

“Taxand provides high quality, integrated tax advice worldwide.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22Exact matchLuxembourgHQ recorded Sep 23, 202611-5022 contacts →

Exact match

“Notre cabinet luxembourgeois indépendant FISOGEST S.A.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23Exact matchLuxembourgHQ recorded Sep 23, 202611-5022 contacts →

Exact match

“Located in Luxembourg, EASE S.A is a management consulting firm driven to provide you with a competitive edge in an increasingly complex and interconnected marketplace.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24Exact matchBelvaux, LuxembourgHQ recorded Sep 23, 202611-5021 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25Exact matchL-8410 Steinfort, LuxembourgHQ recorded Sep 23, 202611-5021 contacts →

Exact match

“Notre concept.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

Showing 25 of 374 advisory and outsourcing services based in Luxembourg

See the full list, filter by size, metro and specialty, and access 3,056 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Advisory and outsourcing services based in Luxembourg at a glance

As of Sep 23, 2026
37.3%Verified-email coverage
1.8%Mobile-number coverage
21.9Average contacts per company
1-10Median size (employees)
53.7%Largest-city concentration · Luxembourg
Sep 23, 2026Page data refreshed

Companies by employee count

1-10
240
11-50
100
51-200
22
201-500
4
501-1,000
4
1,001-5,000
4

Freshness & accuracy

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

Email last verified

Median 25.0d

Company record updated

Median 64.0d

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Luxembourg whose business descriptions match “advisory and outsourcing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,056 professional contacts with verified work emails across the full matched dataset. 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 23, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Advisory and outsourcing services by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “advisory and outsourcing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many advisory and outsourcing services are there based in Luxembourg?

RevenueBase identified 374 company matches for advisory and outsourcing services associated with Luxembourg as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

PWC Luxembourg tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most advisory and outsourcing services?

Luxembourg leads with 201 company records, followed by Bertrange (20) and Strassen (14).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,056 professional contacts with verified work emails tracked across these 374 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 2026.

Ready to reach these companies? Verified emails and direct dials for all 374 advisory and outsourcing services based in Luxembourg. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.