Cap space is the difference between the salary cap and a team's total committed cap charges. It represents how much room a team has to sign or acquire players.
Cap space is arguably the most important number in NFL roster management. It tells you how much financial flexibility a team has to add players through free agency, trades, or extensions. Cap space is calculated by subtracting a team's total cap commitments (the sum of all player cap hits) from the salary cap ceiling. If the cap is $255.4 million and a team has $230 million in committed cap charges, they have $25.4 million in cap space. Cap space fluctuates constantly throughout the offseason and season as teams sign, cut, trade, and restructure players. During the offseason, only the top 51 contracts count toward the cap (the Top 51 Rule), giving teams some extra breathing room. Once the regular season begins, all players on the 53-man roster plus injured reserve count. Teams can also carry over unused cap space from one year to the next, which has become an increasingly popular strategy. Having significant cap space is not inherently good or bad. The Jacksonville Jaguars had the most cap space entering 2024 free agency but overpaid for several players who underperformed. Meanwhile, the Kansas City Chiefs have consistently operated with minimal cap space while winning multiple Super Bowls by strategically restructuring Patrick Mahomes and Chris Jones. The key is not how much space you have, but how wisely you use it.
The Chicago Bears entered the 2025 offseason with over $80 million in cap space, among the most in the league, giving them significant flexibility to rebuild through free agency.
Cap Space = Salary Cap - Total Cap Commitments
Category: Salary Cap. Part of the StickToTheModel NFL Encyclopedia.