At the top of the German football league system, the Bundesliga is Germany's primary football competition. The Bundesliga is contested by 18 teams and operates on a system of promotion and relegation with the 2. Bundesliga. Seasons run from August to May. Most games are played on Saturdays and Sundays, with a few games played on weekdays. All of the Bundesliga clubs qualify for the DFB-Pokal. The winner of the Bundesliga qualifies for the DFL-Supercup.
A total of 54 clubs have competed in the Bundesliga since its founding. FC Bayern Munich has won the Bundesliga the most, winning the title 25 times. However, the Bundesliga has seen other champions with Borussia Dortmund, Hamburger SV, Werder Bremen, Borussia Mönchengladbach and VfB Stuttgart most prominent among them.
The Bundesliga is one of the top national leagues, currently ranked second in Europe according to UEFA's league coefficient ranking, based on performances in European competitions over the past five seasons. The Bundesliga is the number one football league in the world in terms of average attendance; out of all sports, its average of 45,134 fans per game during the 2011–12 season was the second highest of any sports league in the world after the National Football League. The Bundesliga is broadcast on television in over 200 countries.
The Bundesliga was founded in 1962 in Dortmund and the first season started in 1963. The structure and organisation of the Bundesliga along with Germany's other football leagues have undergone frequent changes right up to the present day. The Bundesliga was originally founded by the German Football Association but is now operated by the German Football League.
In the 2009–10 season, the Bundesliga's turnover was €1.7bn, broken down into match-day revenue (€424m), sponsorship receipts (€573m) and broadcast income (€594m). That year it was the only European football league where clubs collectively made a profit. Bundesliga clubs paid less than 50% of revenue in players wages, the lowest percentage out of the European leagues. The Bundesliga has the lowest ticket prices and the highest average attendance out of Europe's five major leagues.
Bundesliga clubs tend to form close associations with local firms, several of which have since grown to big global companies; in a comparison of the leading Bundesliga and Premiership clubs, Bayern Munich received 55% of its revenue from company sponsorship deals, while Manchester United got 37%.
Bundesliga clubs are required to be majority-owned by German club members (known as the 50+1 rule to discourage control by a single entity) and operate under tight restrictions on the use of debt for acquisitions (a team only receives an operating license if it has solid financials), as a result 11 of the 18 clubs were in the black after the 2008–09 season. By contrast the lax approach of the other major European leagues has resulted in several high profile teams coming under ownership of tycoons and Middle Eastern billionaires, and a larger number of clubs have high levels of debt.
After 2000, the German Football Association and the Bundesliga mandated that all clubs run a youth academy, with the aim of bolstering the stream of local talent for the club and national team. As of 2010 the Bundesliga and second Bundesliga spend €75m a year on these youth academies, that train five thousand players aged 12–18, increasing the under-23-year-olds in the Bundesliga from 6% in 2000 to 15% in 2010. This allows more money to be spent on the players that are bought, and there is a greater chance to buy better instead of average players.
In the first ten years of the second millennium, the Bundesliga is regarded as competitive, as five different teams have won the league title. This contrasts with Spain's La Liga which is dominated by the "Big Two" (Barcelona and Real Madrid), and the English Premier League which has seen the "Big Four" (Manchester United, Chelsea, Liverpool, and Arsenal) finish in the top four for a number of years. This theory has been called into question because of Bayern Munich's dominance in the 2012–13 to 2015–16 seasons as the Bavarian side is able to spend big to purchase the league's best players and the Premier League's four different winners in four seasons.