There are currently 21 registered parties in Burundi. On March 13, 1992, Tutsi coup leader Pierre Buyoya established a constitution, which provided for a multi-party political process and reflected multi-party competition. Six years later, on June 6, 1998, the constitution was changed, broadening National Assembly's seats and making provisions for two vice presidents. Because of the Arusha Accord, Burundi enacted a transitional government in 2000.

Burundi's legislative branch is a bicameral assembly, consisting of the Transitional National Assembly and the Transitional Senate. As of 2004, the Transitional National Assembly consists of 170 members, with the Front for Democracy in Burundi holding 38% of seats, and 10% of the assembly is controlled by UPRONA.

 Fifty-two seats are controlled by other parties. Burundi's constitution mandates representation in the Transitional National Assembly to be consistent with 60% Hutu, 40% Tutsi, and 30% female members, as well as three Batwa members. Members of the National Assembly are elected by popular vote and serve for five-year terms.

The Transitional Senate has fifty-one members, and three seats are reserved for former presidents. Due to stipulations in Burundi's constitution, 30% of Senate members must be female. Members of the Senate are elected by electoral colleges, which consist of members from each of Burundi's provinces and communes. For each of Burundi's seventeen provinces, one Hutu and one Tutsi senator are chosen. One term for the Transitional Senate is five years.

Together, Burundi's legislative branch elect the President to a five-year term. Burundi's president appoints officials to his Council of Ministers, which is also part of the executive branch.The president can also pick fourteen members of the Transitional Senate to serve on the Council of Ministers.

 Members of the Council of Ministers must be approved by two-thirds of Burundi's legislature. The president also chooses two vice-presidents.As of May 7, 2015, the President of Burundi is Pierre Nkurunziza. The First Vice President is Therence Sinunguruza, and the Second Vice President is Gervais Rufyikiri.

The Cour Supreme (Supreme Court) is Burundi's highest court. There are three Courts of Appeals directly below the Supreme Court. Tribunals of First Instance are used as judicial courts in each of Burundi's provinces as well as 123 local tribunals.