Company lists · Data verified August 2026

Top 25 Accounting outsourcing companies based in Belgium

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 221 companies tracked

There are 221 accounting outsourcing companies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 862 professional contacts across them, including 389 with verified work emails and 23 with mobile numbers. Antwerpen is the largest hub.

This list covers accounting outsourcing companies headquartered in Belgium, 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.

221Companies

862Contacts tracked

389Verified emails

23Mobile numbers

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The 25 largest accounting outsourcing companies based in Belgium

Ranked by team size

Top 25 of 221 accounting outsourcing companies based in Belgium, 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	Verschaeren & Mertens	Mechelen	11-50	43	30
2	Bookkeepers	Aalst	1-10	20	10
3	Ge-Fibo	Brasschaat	11-50	18	12
4	A4b	Waasmunster	11-50	17	9
5	Stemafisk	Jabbeke	11-50	16	15
6	Bekaert-Callebaut Accountancy	n/a	51-200	16	11
7	Jump4more	Vichte	11-50	14	10
8	Countable BV	n/a	11-50	13	9
9	ABC Verhelst Accountancy	Ieper	11-50	11	6
10	Bofisc	Roeselare	51-200	10	9
11	Jordens Accountants	Hasselt	11-50	10	9
12	Proctifin BV	Edegem	11-50	10	9
13	stratevision.fin	n/a	1-10	10	6
14	Theoffice BV	Borsbeek	11-50	9	9
15	Fiscaal Accountants Lambrichts BV	Zutendaal	11-50	8	8
16	Arcanus	Hasselt	11-50	7	7
17	Cardon & Partners	Sint-Gillis-Waas	1-10	7	6
18	Accountantskantoor J&j	Westmalle	1-10	7	4
19	KG Services	Harelbeke	51-200	7	1
20	STA Accountants	Wilrijk	11-50	6	5
21	Swinnen Kristof & Partners	n/a	11-50	6	4
22	Fiduciaire Fiscoge	n/a	1-10	6	2
23	Accountants	Belsele	11-50	6	1
24	FIABO	Wevelgem	1-10	5	5
25	Optifisk	Herentals	1-10	5	5

Showing 25 of 221 accounting outsourcing companies based in Belgium

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Accounting outsourcing companies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

AntwerpenLargest hub · 7 HQs

23Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

161

11-50

51-200

Accounting outsourcing companies by metro

Metro	Companies
Accounting outsourcing companies in Antwerpen	7
Accounting outsourcing companies in Edegem	5
Accounting outsourcing companies in Beveren	4
Accounting outsourcing companies in Hasselt	4
Accounting outsourcing companies in Gent	3
Accounting outsourcing companies in Mechelen	3
Accounting outsourcing companies in Gistel	2

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 outsourcing companies”, with match quality audited by blind human judging, and headquartered in Belgium.
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 outsourcing companies are there based in Belgium?

There are 221 accounting outsourcing companies 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 companies?

Antwerpen leads with 7 headquartered companies, followed by Edegem (5) and Beveren (4).

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 389 verified decision-maker contacts tracked across these 221 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.