[3][4] In the top division, League A, the group winners and runners-up will advance to a new quarter-final round, played home-and-away over two legs in March 2025.

If the aggregate score is level, extra time is played (the away goals rule is not applied).

If the score remains level after extra time, a penalty shoot-out is used to decide the winner.

[6] The 2024–25 Nations League will be partially linked with European qualification for the 2026 FIFA World Cup, with the format confirmed by the UEFA Executive Committee during their meeting in Nyon, Switzerland, on 28 June 2023.

Russia, slated to participate in League C, were suspended due to Russian invasion of Ukraine.

[14] In an interview with the Polish website meczyki.pl, UEFA vice-president Zbigniew Boniek said that all ten teams from CONMEBOL, South America's football federation, could join the UEFA Nations League from the 2024–25 edition of the competition.

[19] The draw for the league phase took place at the Maison de la Mutualité in Paris, France, on 8 February 2024, 18:00 CET.

[20][21][22] The draw, originally planned to take place in Madrid, was relocated due to the Luis Rubiales scandal.

[23][24] For political reasons, Armenia and Azerbaijan (due to the Nagorno-Karabakh conflict) could not be drawn into the same group.

Due to excessive travel restrictions, only one of England, Iceland, the Republic of Ireland or Wales could be drawn with Kazakhstan.

No winter venue restrictions were necessary for countries with a risk of severe winter weather, and several other potential political and excessive travel restrictions were not required because the teams concerned were either in different leagues or the same draw pot.

[10] The winner of quarter-final between Italy and Germany was selected by UEFA as the host for the final tournament.

If fewer than four Nations League group winners can be selected, the remaining spot(s) will be allocated to the best remaining team(s) in the Nations League interim overall ranking that finished outside the top two of their qualifying group.