2026 World Cup Rule Changes: What to Expect

The 2026 FIFA World Cup, set to be hosted by the United States, Canada, and Mexico, will feature several significant rule changes compared to previous tournaments. The most notable alteration is the expansion from 32 to 48 teams, which will reshape the tournament's structure and gameplay.

Tournament Format Changes

Group Stage

Instead of the traditional eight groups of four, the 2026 World Cup will have 16 groups of three teams each. This change reduces the number of group-stage matches per team from three to two. The top two teams from each group will advance to the round of 32, a new knockout round that replaces the round of 16.

Knockout Stage

The knockout stage will now consist of five rounds: round of 32, round of 16, quarterfinals, semifinals, and the final. This means the tournament will feature 104 matches in total, up from 64 in previous editions. The final will still be a single match, and the third-place playoff will remain.

Squad Size and Substitutions

FIFA has confirmed that squad sizes will increase from 23 to 26 players for the 2026 World Cup. This adjustment allows teams to bring additional players to cope with the increased number of matches and potential injuries. Substitution rules may also see changes, with some reports suggesting that teams could be allowed up to five substitutes per match, a rule already implemented in many domestic leagues and the 2022 World Cup.

VAR and Technology

The Video Assistant Referee (VAR) system will continue to be used, but FIFA is considering modifications to improve its efficiency. Potential changes include the introduction of a challenge system, similar to tennis or cricket, where coaches can request reviews of specific decisions. However, no final decision has been made. Additionally, semi-automated offside technology, first used at the 2022 World Cup, is expected to be refined for 2026.

Other Potential Changes

FIFA has also discussed the possibility of allowing teams to make a sixth substitution in extra time during knockout matches. This would align with rules already in place for the UEFA Champions League and other competitions. Furthermore, the use of temporary concussion substitutes may be introduced, allowing teams to replace a player suspected of having a concussion without using a regular substitution slot.

The 2026 World Cup will also see a change in the match schedule, with games spread across three host countries to minimize travel fatigue. The tournament is expected to run from June to July, with the final scheduled for July 19, 2026.

These rule changes aim to make the tournament more inclusive and competitive, while also addressing player welfare concerns. However, some critics argue that the expanded format could dilute the quality of play and increase the risk of group-stage collusion, as teams might play for a draw to advance. FIFA has stated that it will monitor these issues closely and may adjust rules further before the tournament begins.