from same article:
http://www.sbnation.com/2015/4/28/85...goodell-salaryWait, the NFL makes all that money and hasn't been getting taxed?
Not quite. Most of the money the NFL as a whole makes is taxed and always has been. Any revenue an individual team makes -- ticket sales, jersey sales, their split of the league's massive TV deals -- is the revenue of that team. The NFL's teams are not tax-exempt. They have been paying their share of the huge amounts of money they make.
However, the league's main office -- the administrative arm of the league, the people in charge of setting the NFL's rules, organizing its events and such -- is considered tax-exempt. In comparison to the vast sums of money the NFL's teams reel in, the NFL's league office makes a pretty small slice of the pie, mainly through the membership teams each NFL team pays.