There are 16 clubs in the 1. Liga. During the course of a season, which lasts from August to May, each club plays the others twice, once at their home stadium and once at that of their opponents, for a total of 30 games. In the inaugural season, two points were awarded for a win, before switching to three points for a win in 1994. Teams receive one point for a draw and no points are awarded for a loss. Teams are ranked by total points, in the case of two or more teams finishing with equal points, the head-to-head record between the teams is used for ranking, counting points in relevant games, then goal difference and then goals scored. The two lowest placed teams are relegated to the Czech 2. Liga.
3rd place: Second qualifying round of the UEFA Europa League.
Czech Cup winner: Third qualifying round of the UEFA Europa League, regardless of league position.
If the Cup winner qualifies for European competition through the league, the Cup winner's place in the Europa League goes to the defeated Cup finalist if it is not already qualified for European competition.
If both Cup finalists qualify for the European competition through the league, an extra Europa League berth is granted to the highest finisher in the Gambrinus liga not already qualified for Europe.
An additional place in the Europa League may also be granted via the UEFA Fair Play mechanism. This rule was maintained from the UEFA Cup. The last (and, as of 2012, only) Gambrinus liga team to gain entry to the UEFA Cup via the fair play rule was Sigma Olomouc in 2002–03.
The number of Czech clubs which may participate in UEFA competitions is determined by UEFA coefficients, which take into account the results of a particular nation's clubs in UEFA competitions over the preceding five years.
Since 1993, the league has been sponsored. The sponsor is able to determine the league's sponsorship name. Since 1997 the league has been sponsored by Plzeňský Prazdroj, a. s. and been known as the Gambrinus liga. In 2008, the sponsorship was extended until the end of the 2013–14 season. The list below details who the sponsors have been and what they called the competition: