The tournament consisted of two semi-finals, a third place play-off and final to determine the champions of the UEFA Nations League.

[4] All matches in the tournament utilised the goal-line technology and video assistant referee (VAR) systems.

[8] The use of five substitutes had been permitted by IFAB during the COVID-19 pandemic due to the resulting fixture congestion, which created a greater burden on players.

On 24 September 2020, UEFA announced that Italy, the Netherlands, and Poland had declared interest in hosting the tournament, all three of which are members of Group A1.

[4][14] If the fourth member of the group, Bosnia and Herzegovina, had qualified for the Nations League Finals, the UEFA Executive Committee would have decided the venues.

[15][18] The semi-final pairings were determined by means of an open draw on 3 December 2020, 17:30 CET, at the UEFA headquarters in Nyon, Switzerland.

[5] Each national team had to submit a squad of 23 players, three of whom had to be goalkeepers, at least ten days before the opening match of the tournament.

2 goals1 goalPlayer of the Tournament The Hisense Player of the Finals award was given to Sergio Busquets, who was chosen by UEFA's technical observers.