Company lists · Data refreshed August 2026

Top 25 Accounting outsourcing firms based in Belgium

Name: Accounting outsourcing firms based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 30, 2026 365 companies tracked

There are 365 accounting outsourcing firms headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 1,618 professional contacts across them, including 746 with verified work emails and 31 with mobile numbers. Antwerpen is the largest hub.

This list covers accounting outsourcing firms headquartered in Belgium, 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, how directly it supports the match, and when it was last checked. Data refreshed August 30, 2026.

365Companies

1,618Contacts tracked

746Verified emails

31Mobile numbers

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The 25 largest accounting outsourcing firms based in Belgium

Ranked by team size

Top 25 of 365 accounting outsourcing firms based in Belgium, ranked by team size, largest first. Data refreshed Aug 30, 2026. Evidence rates how directly each company's own description names accounting outsourcing firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts	Verified emails
1	Verschaeren & MertensPartial evidence “Verschaeren & Mertens is an accounting company based in Mechelen, Belgium.” Source: company website · checked Aug 30, 2026	Mechelen, Belgium	11-50	43	30
2	QPS AccountantsIndirect evidence “Met 30 jaar ervaring in Accountancy en Fiscaliteit, onder de naam QPS, hebben we een gedegen naambekendheid opgebouwd, met een trouw cliënteel, een waarborg van continuïteit en…” Source: company website · checked Aug 30, 2026	Genk, Belgium	11-50	40	32
3	Financial Resources & Projects Fr&pIndirect evidence “FR & P was established in 2002 with a Management buy-out between Deloitte and a number of managers.” Source: company website · checked Aug 30, 2026	Belgium	51-200	38	29
4	Accountants LauwersIndirect evidence “Accountants Lauwers heeft vestigingen in Ronse, Frasnes, Gent en Kortrijk en stelt naast 6 vennoten, 40 medewerkers tewerk.” Source: company website · checked Aug 30, 2026	Kortrijk, Belgium	11-50	34	30
5	AccountingteamPartial evidence “Met kantoren in Kontich en Heist-op-den-Berg is AccountingTeam dé bedrijfsadviseur in Antwerpen en omstreken.” Source: company website · checked Aug 30, 2026	Heist-Op-Den-Berg, Belgium	11-50	32	4
6	A&b Kmo-PartnersIndirect evidence “Met A&B Partners geeft u de cijfers van uw onderneming in betrouwbare handen.” Source: company website · checked Aug 30, 2026	Genk, Belgium	11-50	21	13
7	Ge-FiboIndirect evidence “Als ondernemer heb je heel wat wettelijke, boekhoudkundige en fiscale verplichtingen die je vaak liever kwijt dan rijk bent.” Source: company website · checked Aug 30, 2026	Brasschaat, Belgium	11-50	18	12
8	Madou Vandromme AccountancyPartial evidence “Madou Vandromme Accountancy te Oostduinkerke is an accounting company based out of Oostduinkerke (Koksijde), Belgium.” Source: company website · checked Aug 30, 2026	Oostduinkerke, Belgium	11-50	17	14
9	A4bIndirect evidence “Net als elk ander boekhoudkantoor verzorgen wij de boekhouding van managementvennootschappen, vrije beroepers en KMO’s.” Source: company website · checked Aug 30, 2026	Waasmunster, Belgium	11-50	17	9
10	StemafiskIndirect evidence “Stemafisk staat de ondernemer bij in zijn alledaagse administratie en zijn boekhouding.” Source: company website · checked Aug 30, 2026	Jabbeke, Belgium	11-50	16	15
11	AccofiscPartial evidence “ACCOFISC is an accounting company based out of PRESIDENT KENNEDYPARK, 24, KORTRIJK, België, Belgium.” Source: company website · checked Aug 30, 2026	Merelbeke, Belgium	11-50	16	14
12	Bekaert-Callebaut AccountancyIndirect evidence “Welkom bij Bekaert-Callebaut Accountancy.” Source: company website · checked Aug 30, 2026	Belgium	51-200	16	11
13	ISIROIndirect evidence “ISIRO Fiduciaire + conseil Cabinet comptable et bureau de conseil pour les indépendants, PME et pour le secteur public.” Source: company website · checked Aug 30, 2026	Liege, Belgium	11-50	12	9
14	Fiduciaire Ryckeman GebroedersIndirect evidence “Ons ervaren team van boekhouders & accountants ondersteunt jou als ondernemer graag bij het uitbouwen en groeien van je zaak.” Source: company website · checked Aug 30, 2026	Brugge, Belgium	11-50	11	9
15	ABC Verhelst AccountancyIndirect evidence “Uw nummer 1 in cijfers ABC Verhelst Accountancy is een allround kantoor voor accountancy en boekhouding voor elke onderneming.” Source: company website · checked Aug 30, 2026	Ieper, Belgium	11-50	11	6
16	BofiscIndirect evidence “Bofisc is een jong en dynamisch boekhoudkantoor dat zich richt naar kleine en middelgrote KMO's, vrije beroepen en zelfstandigen.” Source: company website · checked Aug 30, 2026	Roeselare, Belgium	51-200	10	9
17	Jordens AccountantsPartial evidence “ACCOUNTANTSKANTOOR JORDENS is an accounting company based out of 13 Kramerslaan, Hasselt, Belgium.” Source: company website · checked Aug 30, 2026	Hasselt, Belgium	11-50	10	9
18	Ghysel EN DE LombaerdePartial evidence “GHYSEL en DE LOMBAERDE is an accounting company based out of 1099 Kortrijksesteenweg, Gent, Belgium.” Source: company website · checked Aug 30, 2026	Gent, Belgium	11-50	10	8
19	ADE ConsultantsIndirect evidence “Bij ADE Consultants geloven we dat een accountant die mee is met zijn tijd en dicht bij zijn klanten staat, de grootste meerwaarde is die je een ondernemer kan bieden.” Source: company website · checked Aug 30, 2026	Belgium	11-50	10	4
20	Theoffice BVPartial evidence “TheOffice was founded in 2005 by Gaby Van Loock and Lode Ilsen as a merger of 3 business- and accounting services each having more than 20 years experience.” Source: company website · checked Aug 30, 2026	Borsbeek, Belgium	11-50	9	9
21	VAN Herreweghe & Partners CvbaIndirect evidence “Ons boekhoudkantoor is gelegen in het centrum van de Dendermondse deelgemeente Grembergen en omvat momenteel een tiental medewerkers.” Source: company website · checked Aug 30, 2026	Grembergen, Belgium	11-50	9	8
22	Kantoor HuygheIndirect evidence “Working at Kantoor Huyghe feels like coming home.” Source: company website · checked Aug 30, 2026	Belgium	11-50	9	8
23	Fiscaal Accountants Lambrichts BVIndirect evidence “Wij zijn een snelgroeiend boekhoud- en consultantkantoor te Zutendaal.” Source: company website · checked Aug 30, 2026	Zutendaal, Belgium	11-50	8	8
24	lafiduciaire.beIndirect evidence Source: company website · checked Aug 30, 2026	Lasne, Belgium	11-50	8	7
25	CogitasIndirect evidence “Bureaux d'expertises comptables et conseils fiscaux.” Source: company website · checked Aug 30, 2026	Arquennes, Belgium	11-50	8	3

Showing 25 of 365 accounting outsourcing firms based in Belgium

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Accounting outsourcing firms based in Belgium at a glance

As of Aug 30, 2026

1-10Median size (employees)

AntwerpenLargest hub · 13 HQs

31Contacts with mobile numbers

Aug 30, 2026Data refreshed

Companies by employee count

1-10

264

11-50

51-200

Accounting outsourcing firms by metro

Metro	Companies
Accounting outsourcing firms in Antwerpen	13
Accounting outsourcing firms in Gent	7
Accounting outsourcing firms in Heist-Op-Den-Berg	6
Accounting outsourcing firms in Edegem	5
Accounting outsourcing firms in Schoten	5
Accounting outsourcing firms in Brugge	5
Accounting outsourcing firms in Genk	4

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 outsourcing firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies: Companies headquartered in Belgium whose own description of what they do matches “accounting outsourcing firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among accounting outsourcing firms, and records with no verified work email. Companies headquartered outside Belgium 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 an evidence rating so you can judge each match yourself.
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, 746 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 August 30, 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

How many accounting outsourcing firms are there based in Belgium?

There are 365 accounting outsourcing firms headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Verschaeren & Mertens, headquartered in Mechelen, tops this list with the largest team on record.

Which city has the most accounting outsourcing firms?

Antwerpen leads with 13 headquartered companies, followed by Gent (7) and Heist-Op-Den-Berg (6).

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 746 verified decision-maker contacts tracked across these 365 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 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.