Business and other management consultancy activities: highest published revenue
1,966 Belgian companies in the sector (NACE 7020) publish their revenue in recent accounts; here are the top 20. Deloitte Consulting & Advisory leads with €561.2m (financial year 2025).
Top 20
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Deloitte Consulting & Advisory 1930 Zaventem | €213.9m | €561.2m | €23.2m | 2,046.8 | 2025 |
| 2 | Accenture 1000 Brussels | €196.6m | €469.5m | €52.3m | 1,081.2 | 2025 |
| 3 | Flir Systems Trading Belgium 2960 Brecht | €225.2m | €398.6m | €180.6m | 93.7 | 2025 |
| 4 | Randstad Group Belgium 1853 Grimbergen | €514.5m | €242.8m | €193.8m | 1,909.3 | 2025 |
| 5 | PricewaterhouseCoopers Enterprise Advisory 1831 Machelen (Brab.) | €75.9m | €162.2m | €5.92m | 493.6 | 2026 |
| 6 | Ernst & Young Consulting 1831 Machelen (Brab.) | €60.9m | €124.4m | €5.47m | 443.2 | 2025 |
| 7 | The Boston Consulting Group 1000 Brussels | €47.7m | €115.4m | €8.20m | 189.0 | 2025 |
| 8 | Randstad Services 1853 Grimbergen | €21.2m | €100.7m | €4.26m | 715.0 | 2025 |
| 9 | Forvis Mazars Group 1210 Saint-Josse-ten-Noode | €83.9m | €97.6m | €2.26m | — | 2025 |
| 10 | KPMG Advisory 1930 Zaventem | €38.2m | €96.9m | €10.1m | 541.1 | 2025 |
| 11 | Partena Business Solutions 1000 Brussels | €138.7m | €93.9m | €20.9m | 452.3 | 2025 |
| 12 | United Consulting 2845 Niel | €55.0m | €82.2m | €44.5m | 749.1 | 2025 |
| 13 | Waterleau Group 3150 Haacht | €95.2m | €70.7m | €27.4m | 109.5 | 2025 |
| 14 | Schneider Electric ESS 8790 Waregem | €58.7m | €66.9m | €3.21m | 28.1 | 2025 |
| 15 | BDO Advisory 1050 Ixelles | €28.1m | €62.4m | €4.10m | 227.5 | 2025 |
| 16 | TriFinance Belgium 2600 Antwerp | €15.6m | €60.1m | €1.70m | 428.7 | 2025 |
| 17 | Ipsos 2600 Antwerp | €37.1m | €58.6m | €9.84m | 176.4 | 2025 |
| 18 | The Profile Group 1040 Etterbeek | €5.20m | €53.9m | −125,952 € | 40.1 | 2025 |
| 19 | I4F Licensing 2300 Turnhout | €684.0m | €53.1m | €512.3m | 18.3 | 2025 |
| 20 | Ernst & Young Strategy and Transactions 1831 Machelen (Brab.) | €21.9m | €50.0m | €4.26m | 99.0 | 2025 |
These are the revenue figures published in the annual accounts. Small companies (micro and abridged accounts) do not have to publish theirs: they do not appear in this ranking.
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Frequently asked questions
Which company in Business and other management consultancy activities has the highest revenue?
Deloitte Consulting & Advisory, with €561.2m in revenue (financial year 2025).
How many Business and other management consultancy activities companies publish their revenue?
1,966 out of 53,139, in accounts less than 3 years old. Small companies (micro and abridged accounts) are not required to publish it.
Analyse companies in Business and other management consultancy activities
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Open the full file →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 14 Nov 2026.