The NFL Players' Association expects the salary cap to increase only slightly to about $400,000 per team next season, according to Yahoo! Sports.
If that occurs, the overall cap would go from $120.6 million to $121 million, a 3.3 percent increase. That would represent the smallest increase in the 20-year history of the cap.
NBC Sports' Pro Football Talk pointed out that tax rate for the highest earners is expected to increase by 4.6 percent next year.
Last year's cap was affected when the NFL imposed two-year penalties structured to dissolve $46 million of cap space combined toward the Washington Redskins and Dallas Cowboys.
The teams were penalized for using the uncapped 2010 year to create what was characterized as an unfair competitive advantage going forward, putting large base salary numbers into 2010 on player contracts.
Dallas did it in the contract of wide receiver Miles Austin, while Washington structured contracts with extra money in 2010 for cornerback DeAngelo Hall and defensive tackle Albert Haynesworth.