The NFL has set the salary cap at $177.2M for 2018. Each team also has some rollover that adds to that amount to arrive at what is generally called a team’s effective cap limit. Green Bay rolled over $3.934M, so our effective limit is $181.134M. At present and until the first regular season game, the Rule of 51 is in place under which only the 51 highest base salaries (technically P5 compensation) count against a team’s effective cap limit. The difference between a team’s effective cap limit and the 51 highest contracts is often referred to as a team’s salary cap space.
The NFL Draft and the Salary Cap: A Refresher Course
