While the NFL won't finalize its league-wide cap number until March 11, it's expected to be in the range of $126 to $128 million. However, the 2011 collective bargaining agreement allows teams to "carry over" unused cap space from the previous season, which can increase their salary cap in the ensuing season.
The Bills are scheduled to have the fourth-highest carryover, as outlined Thursday by ESPN NFL Insider Kevin Seifert.
Current figures from ESPN's Roster Management System have the Bills with more than $17 million in carried over cap space, which should increase their 2014 salary cap to more than $140 million.
The Bills already have $125 million committed to their 2014 cap, which is in the top third of the league. In other words, while they are carrying over a significant amount from 2013, the Bills will still be in the middle of the pack in 2014 cap space.