The day has finally come. The NBA has officially announced pentalties for flopping. At first, you will be hit with fines, which could ultimately lead to suspensions. They could’ve assessed in-game fouls, but that means half the league would be on the bench in the 2nd quarter.
First offense in a season gets you a warning. Second time it is a $5,000 fine. Third time it is $10,000, fourth time $15,000 and if there is a fifth offense in a season the fine is $30,000. Go beyond that and the league has the option to give larger fines or issue suspensions. (This applies only to the regular season, different playoff flopping rules will come later.)
Source: probasketballtalk