It is unicameral and consists of 150 members, who are elected by universal suffrage under proportional representation with seats distributed via largest remainder method with Hagenbach-Bischoff quota every four years.

The National Council approves domestic legislation, constitutional laws, and the annual budget.

Its consent is required to ratify international treaties, and is responsible for approving military operations.

The 150-seat unicameral National Council of the Slovak Republic is Slovakia's sole constitutional and legislative body.

[5] It elects some officials specified by law, as well as justices of the Constitutional Court and the prosecutor general.

Although the suffrage is universal, only a citizen who has the right to vote, has attained 18 years of age and has permanent residency in the Slovak Republic is eligible to be elected.

The construction started in 1986 when Slovakia was part of Czechoslovakia as a building for the Federal Parliament, which usually met in Prague.