The Federal Parliament is elected for five years, except in the case of early federal elections. You can read all about the federal elections on the website of the federal government.
In Belgium, the elections of the regional parliaments, the Federal Chamber of Representatives and the European Parliament are organised simultaneously every five years.
Further information about the elections can be found on the website of the Directorate of Elections of the Federal Public Service Home Affairs. On the website with the Belgian election results, you can find the results of all elections in Belgium since 1848 for the local, regional, federal and European level.