blog posts Could the NFL, until recently a non-profit, really not owe any taxes? May 5, 2015 12:00 pm by Washington PostIllinois in the News Share on Facebook Tweet Email Images Washington Post (May 1) - “I’ve been saying this for years, there’s really very minimal tax benefit here for the league, if at all,” said John Colombo, a tax law professor at Illinois. Share on Facebook Tweet Email