Third Serbia was registered as an association of citizen in 2012, and was formed at the foundatory general assembly held on 13 October 2013, in Belgrade, as a split from the Movement for Life - Dveri.

Aleksandar Protić, who was a member and producer of the music group Belgrade Syndicate, was elected the first president of the party, and Miroslav Parović, then the head of the committee group, was elected in Novi Sad at the age of 22 from Dveri's electoral lists.

[3] In the 2012 election, BS ran as part of the U-Turn political alliance led by Čedomir Jovanović, the head of the Liberal Democratic Party and won 1 seat.

This was opposed by some members of Third Serbia, and they split into a new movement called the Serbian League led by Aleksandar Đurđev.

[9] Due to the need to adapt to modern trends in European politics, on 17 December 2016 the party bodies made a decision on internal reform, when it merged into the People's Freedom Movement.