Walloon Brabant: the 27 communes
416,821 residents on 1 January 2026 (National Register). Commune income tax surcharges in 2026 range from 5.50% to 8.80% (average 7.55%).
| Commune | Population | Foreign nationality | Income tax surcharge | Property centimes |
|---|---|---|---|---|
| Beauvechain (Bevekom) | 7,249 | 7.2% | 7.00% | pending |
| Braine-l'Alleud (Eigenbrakel) | 40,807 | 11.6% | 5.50% | pending |
| Braine-le-Château (Kasteelbrakel) | 10,605 | 9.1% | 8.00% | pending |
| Chastre | 7,820 | 4.9% | 8.00% | pending |
| Chaumont-Gistoux | 11,916 | 6.2% | 8.00% | pending |
| Court-Saint-Etienne | 11,076 | 9.3% | 8.00% | pending |
| Genappe (Genepiën) | 16,312 | 7.7% | 8.00% | pending |
| Grez-Doiceau (Graven) | 14,057 | 8.3% | 6.90% | pending |
| Hélécine | 3,924 | 7.7% | 8.80% | pending |
| Incourt | 5,700 | 6.3% | 8.00% | pending |
| Ittre (Itter) | 6,908 | 7.5% | 7.90% | pending |
| Jodoigne (Geldenaken) | 15,015 | 8.5% | 8.80% | pending |
| La Hulpe (Terhulpen) | 7,543 | 17.3% | 6.60% | pending |
| Lasne | 14,145 | 9.6% | 5.80% | pending |
| Mont-Saint-Guibert | 8,503 | 7.2% | 7.50% | pending |
| Nivelles (Nijvel) | 29,808 | 9.9% | 7.00% | pending |
| Orp-Jauche | 9,173 | 4.9% | 8.00% | pending |
| Ottignies-Louvain-la-Neuve | 31,785 | 15.5% | 7.70% | pending |
| Perwez (Perwijs) | 9,811 | 5.9% | 7.50% | pending |
| Ramillies | 6,711 | 3.9% | 8.30% | pending |
| Rebecq | 11,219 | 10.7% | 8.50% | pending |
| Rixensart | 22,972 | 11.5% | 6.60% | pending |
| Tubize (Tubeke) | 29,044 | 16.4% | 8.00% | pending |
| Villers-la-Ville | 11,056 | 5.1% | 8.00% | pending |
| Walhain | 7,561 | 4.0% | 8.40% | pending |
| Waterloo | 30,374 | 18.2% | 5.70% | pending |
| Wavre (Waver) | 35,727 | 11.3% | 7.30% | pending |