<Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The NBA Collective Bargaining Agreement (CBA) is the contract between the NBA (the commissioner and the 30 team owners) and the NBA Players Association that dictates the rules of player contracts, trades, revenue distribution, the NBA Draft, and the salary cap, among other things . In June 2005, the NBA's 1999 CBA expired, meaning the League and the players' union had to negotiate a new agreement; in light of the 2004--05 NHL lockout, the two sides quickly came to an agreement, and ratified a new CBA in July 2005 . This agreement expired following the 2010--11 season, leading to the 2011 NBA lockout . A new CBA was ratified in December 2011, ending the lockout . </P> <P> Little changed in terms of the salary cap between the 1999 and 2005 versions of the CBA . In exchange for agreeing to the controversial player age minimum, the players received a slightly higher percentage of the League's revenues over the course of the new agreement . Additionally, the League's maximum salary decreased slightly in comparison to the 1999 CBA . Under the 2011 CBA, the players will receive a lower percentage of league revenues . </P> <P> In 2005, players received 57% of the income, and as of the new CBA, they are receiving about 49--50% of revenue . At that time, the next CBA discussion was set for ten years . or if necessary, in 2017 . In 2016, the NBA and NBA Players Association met to work on a new CBA, which both sides approved in December of that year . This most recent agreement will start with the 2017--18 season and run through 2023--24, with a mutual opt - out after 2022--23 . </P>

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