As of 2015, NBA regulations stipulate that players must be at least 19 years old and one year out of high school to begin playing professionally. NBA Commissioner Adam Silver has discussed raising the minimum age to 20.
The age minimum and stipulation that players be at least a year out of high school were implemented in 2005. These rules have led to many players simply attending college for a year and then going pro, a practice that Silver hopes to change. The commissioner has discussed raising the minimum age to 20, but actually implementing the policy requires discussion with the National Basketball Players Association. Silver also hopes to bring the National Collegiate Athletic Association into the discussion.