At the federal level, executive power is wielded by the Federal Government, whilst the Prime Minister is the head of the government. Each minister heads a ministry, and secretaries of state, who are deputy to a minister, help run these ministries. The government reflects the weight of political parties that constitute the current governing coalition for the Chamber. No single party or party family across linguistic lines holds an absolute majority of seats in Parliament. The number of ministers is limited to 15, equally divided between French-speaking and Dutch-speaking ministers, according to Article 99 of the Constitution. Although the Prime Minister is officially exempt from this quota, no francophones held the post from 1979 to 2011. Government meetings are conducted through simultaneous interpreters. The Prime Minister and his ministers administer the government and the various Federal Public Services. As in the United Kingdom, ministers must defend their policies and performance in person before the Chamber. An important de facto body is the "inner cabinet", consisting of the Prime Minister and the Deputy Prime Ministers. They meet to make the most important political decisions.
Formation
After the elections, the Prime Minister of the former government offers his resignation to the King, and the formation process for a new government starts. The incumbent government remains in office in a caretaker role until the new government is sworn in. This process is based largely on constitutional convention rather than written law. The King is first consulted by the President of the Chamber of Representatives and the President of the Senate. The King also meets a number of prominent politicians in order to discuss the election results. Following these meetings, an Informateur is appointed. The Informateur has the task of exploring the various possibilities for the new Federal Government and assessing which parties can form a majority in the Federal Parliament. He also meets with prominent people in the socio-economic field to learn their views on the policy that the new Federal Government should conduct. The Informateur then reports to the King and advises him about the appointment of the Formateur. However the King can also appoint a second Informateur or appoint a royal mediator. The task of a royal mediator is to reach an agreement on contentious issues, resolve remaining obstacles to the formation of a Federal Government and prepare the ground for a Formateur. On July 5, 2007 King Albert II appointed Jean-Luc Dehaene as royal mediator to reach an agreement on a new State Reform. The Formateur is appointed by the King on the basis of the informateur's report. The task of the Formateur is to form a new government coalition and lead the negotiations about the government agreement and the composition of the government. If these negotiations succeed, the Formateur presents a new Federal Government to the King. Usually, the Formateur also becomes the Prime Minister. In accordance with article 96 of the Belgian Constitution, the King appoints and dismisses his ministers. However article 106 of the Belgian Constitution states that the King cannot act alone, and exercises his powers through the ministers. All of his acts must be countersigned by a minister. In turn, that minister assumes political responsibility for the act in question. Thus, in practice, the outgoing Prime Minister countersigns the Royal Order appointing the new Prime Minister. Subsequently, the new Prime Minister countersigns the Royal Order accepting the resignation of the outgoing Prime Minister and the Royal Orders appointing the other members of the new Federal Government. The appointed ministers take the oath of office before the King. After they have taken the oath, the new Council of Ministers meets to draw up the declaration of government, in which the Federal Government sets out the main lines of the government agreement and outlines the government agenda. The Prime Minister reads the declaration of government to the Chamber of Representatives, which then holds a debate on the declaration of government. Following this debate, a vote of Confidence takes place. If the Prime Minister obtains the confidence of the majority, he can begin implementing the government agreement.
The current Wilmès II Government, a minority cabinet since March 2020, consists of 12 Ministers in a coalition of the Dutch-speaking parties Open VLD and CD&V and the French-speaking party MR.