NFL salary cap expected to go up $7 million each of next two years ; and. NFL salary cap rising by $7 million for 2008 season The NFL salary cap is the absolute maximum each franchise may spend on player team does exceed the salary cap at any time, the NFL can waive players from the have at least $10 million of salary cap room, including three with at least $20 million. enough to eat up much of the NFL's available salary-cap space. With free agency nearing, find out how much each NFL team is over or under the salary cap. team is under or over the $109 million salary cap as of March 2.