The 10 teams are divided into two, five-team groups in the Preliminary Round.
After a single round-robin series in each group, the top four teams from each group advance to the Playoff Round while the fifth-placed team in each group moves to the Relegation Round.
The top four placed teams from the Preliminary will play a cross-over Quarterfinal game: 1A vs. 4B, 1B vs. 4A, 2A vs. 3B and 2B vs. 3A. The winner of each Quarterfinal moves onto the Semi-Finals.
The winner of each Semi-Final game will move onto the Gold Medal Game, while the losers will play in the Bronze Medal Game.
The quarter-final losers will be ranked 5th to 8th according to 1. their position in the group, 2. their preliminary-round record (1. points, 2. goal difference, 3. goals scored).
The two last-placed teams play a best-of-three Relegation Round series. The third game is only played if needed. The winner of the series plays again at the 2018 IIHF World Junior Championship, while loser is relegated to Division I Group A.
For all games points shall be awarded as follows:
If a game is tied at the end of regulation time, a five-minute overtime period shall be played. The teams will change ends for the overtime period. The game will end when the five minutes has expired or when a goal is scored; the scoring team will be declared the winner. If no goal is scored in the overtime period then the Game Winning Shots Procedure will apply. All overtime periods of any IIHF game shall be played with each team at the numerical strength of three (3) skaters and one (1) goalkeeper for games of the preliminary round.
Overtime procedure in Play-Off Games:
If no goal is scored in the overtime period then the Penalty-Shot Shootout (PSS) procedure will apply. The following procedure will be utilized:
The tie-breaking system for two teams with the same number of points in a standing will be the game between the two teams, the winner of the game taking precedence.
Due to the fact that the three-point system does not allow a game to end in a tie, then the following tie breaking procedure is applicable when three or more teams are tied in points in a Championship standing.
Should three or more teams be tied on points, then a tie breaking formula will be applied as follows, creating a sub-group amongst the tied teams. This process will continue until only two or none of the teams remain tied. In the case of two tied teams remaining, the game between the two would then be the determining tie-breaker as the game could not end as a tie. In the case of none of the teams being tied, the criteria specified in the respective step applies.
Step 1: Taking into consideration the games between each of the tied teams, a sub-group is created applying the points awarded in the direct games amongst the tied teams from which the teams are then ranked accordingly.
Step 2: Should three or more teams still remain tied in points then the better goal difference in the direct games amongst the tied teams will be decisive.
Step 3: Should three or more teams still remain tied in points and goal difference then the highest number of goals scored by these teams in their direct games will be decisive
Step 4: Should three or more teams still remain tied in points, goal difference and goals scored then the results between each of the three teams and the closest best-ranked team outside the sub-group will be applied. In this case the tied team with the best result (1. points, 2. goal difference, 3. more goals scored) against the closest best ranked-team will take precedence
Step 5: Should the teams still remain tied, then the results between each of the three teams and the next highest best-ranked team outside the sub-group will be applied.
Step 6: Should the teams still remain tied after these five steps have been exercised then Sport considerations will be applied and the teams will be ranked by their positions coming into the Championship (seeding).
The gold medal game and bronze medal game will determine the final ranking for the top-4 teams. The eliminated teams from the preliminary round plus the losing teams of the quarter-finals will be ranked following their positions in the groups preceding the quarter-final round.
The final ranking will follow the following procedure:
1. Higher position in the group,
2. Higher number of points,
3. Better goal difference,
4. Higher number of goals scored for,
5. Better seeding number
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