Sector · NACE 8210

Office administrative and support activities

3,189 Belgian companies whose main activity falls under NACE code 8210 have filed annual accounts. Their median solvency is 48.9% for financial year 2025.

Companies3,189
Median solvency48.9%
Median equity59,463 €
Median headcount (FTE)1.5
Founded in the last 3 years404

Sector medians

Computed by Idonis

Distribution across the sector's companies for financial year 2025: a quarter of companies sit below the 1st quartile, half below the median, three quarters below the 3rd quartile.

Indicator1st quartileMedian3rd quartileCompanies
Solvency 16.7%48.9%75.7% 2,804
Current ratio 0.621.473.54 2,791
ROE 1.5%17.7%51.7% 2,439
Equity 13,270 €59,463 €212,223 € 2,874
Total assets 54,107 €158,535 €582,227 € 2,830
Net result −377 €11,830 €42,512 € 2,867
Headcount (avg FTE) 0.61.56.1 452

Medians computed by Idonis from annual accounts filed with the National Bank, all sizes combined. The same panel is the sector benchmark on every company page. Method

Largest companies: Office administrative and support activities

Ranked by total assets in the latest filed accounts. This is a size criterion, not an assessment.

#Company Total assetsRevenue EquityFTEYear
1 SD Worx Sécretariat Social ASBL 2000 Antwerp €3.37bn 467,379 € €21.4m 102.3 2025
2 DB SAF Pillar Belgium BidCo 1831 Machelen (Brab.) €755.4m €24.0m €452.5m — 2025
3 PARTENA - SECRETARIAT SOCIAL D'EMPLOYEURS - PARTENA - SOCIAAL SECRETARIAAT VOOR werkgevers 1000 Brussels €614.2m €131.7m €95.7m 745.5 2025
4 Pollet Group 8680 Koekelare €520.5m €7.78m €517.3m 39.6 2025
5 Acerta Sociaal Secretariaat - Acerta Secretariat Social - Acerta Sozialsekretariat 1020 Brussels €490.1m €146.5m €45.3m 586.7 2025
6 Group S - Secretariat Social, Secretariat Social Agree D'Employeurs 1000 Brussels €463.5m €79.4m €29.7m 34.6 2025
7 SEA - Invest 9042 Ghent €435.0m €12.6m €258.8m 31.3 2025
8 Liantis sociaal secretariaat 8000 Bruges €422.9m €103.0m €54.1m 561.4 2025
9 The People Panel 8500 Kortrijk €177.3m €9.64m €148.0m 75.5 2025
10 Group S 1000 Brussels €141.6m €86.1m €104.3m 654.7 2025
11 PetSerCo Holding 1050 Ixelles €138.2m 209,733 € €102.4m — 2025
12 Citymesh Holding 8020 Oostkamp €135.4m — €106.7m — 2025
13 Secrétariat Social des Classes Moyennes 5100 Namur €128.3m €57.9m €17.2m 405.4 2025
14 Centrale Inning AZORG 9300 Aalst €126.5m €350.0m 864,604 € 2.0 2025
15 Intercommunale Leiedal 8500 Kortrijk €125.6m €10.4m €39.4m 76.2 2025
16 VACA 8400 Ostend €117.1m €2.21m €115.1m 7.0 2025
17 Sociaal Engagement 1030 Schaerbeek €107.9m €2.24m €105.7m 34.4 2025
18 IVCE Services 9840 Nazareth-De Pinte €105.6m €49.6m −€18.3m 172.0 2024
19 Group S 1000 Brussels €77.2m — €76.9m — 2025
20 Constellation Holding Belgium 7700 Mouscron €70.6m €2.14m €36.5m — 2024

“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.

Where are they based?

  • Antwerp604
  • Brussels-Capital466
  • East Flanders409
  • West Flanders351
  • Flemish Brabant333
  • Limburg251
  • Hainaut242
  • Liège229
  • Walloon Brabant160
  • Namur116
  • Luxembourg28

Municipalities with the most

Related sectors

← The whole Office administrative, office support and other business support activities sector (NACE 82)

Frequently asked questions

How many Office administrative and support activities companies are there in Belgium?

3,189 Belgian companies whose main activity falls under NACE code 8210 (Office administrative and support activities) have filed annual accounts with the National Bank.

What is the median solvency in Office administrative and support activities?

For financial year 2025, median solvency (equity over total assets) is 48.9%. The middle half of companies lies between 16.7% and 75.7% (2,804 companies).

What is the largest company in Office administrative and support activities?

By total assets, it is SD Worx Sécretariat Social ASBL (€3.37bn, financial year 2025).

Where are Office administrative and support activities companies based?

The municipalities with the most: Ixelles (80), Brussels (61), Uccle (48).

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Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 11 Nov 2026.