League B consists of 12 UEFA members ranked from 13–24, split into four groups of three. The winners of each group will be promoted to the 2020–21 UEFA Nations League A, and the third-placed team of each group will be relegated to the 2020–21 UEFA Nations League C. In addition, League B will be allocated one of the four remaining UEFA Euro 2020 places. Four teams from League B which have not already qualified for the European Championship finals will compete in the play-offs for each division, to be played in March 2020. The play-off berths will be first allocated to the group winners, and if any of the group winners have already qualified for the European Championship finals, then to the next best ranked team of the division, etc. If there are fewer than four teams in League B which have not already qualified for the European Championship finals, the play-off berths will be allocated via one of two methods. If League B has a group winner selected for the play-offs, the next best team in the overall ranking from a lower league will be selected. If League B has no group winner available, the best team in the overall ranking will be selected. The play-offs will consist of two "one-off" semi-finals and one "one-off" final between the two semi-final winners.
Seeding
Teams were allocated to League B according to their UEFA national team coefficients after the conclusion of the 2018 FIFA World Cup qualifyinggroup stage on 11 October 2017. Teams were split into three pots of four teams, ordered based on their UEFA national team coefficient. The seeding pots for the draw were announced on 7 December 2017.
The fixture list was confirmed by UEFA on 24 January 2018 following the draw. Times are CET/CEST, as listed by UEFA.
Group 1
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Group 2
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Group 3
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Group 4
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Goalscorers
Overall ranking
The 12 League B teams were ranked 13th to 24th overall in the 2018–19 UEFA Nations League according to the following rules:
The teams finishing first in the groups will be ranked 13th to 16th according to the results of the league phase.
The teams finishing second in the groups will be ranked 17th to 20th according to the results of the league phase.
The teams finishing third in the groups will be ranked 21st to 24th according to the results of the league phase.
Prize money
The prize money to be distributed was announced in March 2018. Each team in League B will receive a solidarity fee of €1 million. In addition, the four group winners will receive double this amount with a €1M bonus fee. This means that the maximum amount of solidarity and bonus fees for a team from League B is €2M.
Qualifying play-offs
The four best teams in League B according to the overall ranking that have not qualified for UEFA Euro 2020 through the qualifying group stage will compete in the play-offs, with the winners qualifying for the final tournament. If there are fewer than four teams in League B that have not qualified, the remaining slots are allocated to teams from another league, according to the overall ranking.
