TV4 was established on 1 April 2000 as a result of the merger of Nasza TV (1998–2000) and Polsat 2 in its initial format (1997–2000).

From the beginning of TV4's existence until 2005, the TV Odra stations started relaying TV4, thus extending the network of transmitters.

With time, however – for financial reasons – subsequent TV stations resigned from broadcasting them (in practice, simply becoming transmitters of the TV4 signal).

Each of the TV Odra stations – apart from their own local broadcast slots for several hours a day – still carried the channel, except for NTL Radomsko which has been rebroadcasting TVN since September 2005.

On 3 August 2023, TV4, along with TV6, were rebranded again with new logos and graphics derived from the main parent channel Polsat.