On the surface, the salary cap seems to be an objective, unambiguous formula. In reality, the specific team-by-team spending limit is finalized via back-and-forth negotiations between the NFL and the NFL Players Association. For 2017, the final number will be announced soon, since each team must be in compliance with it by March 9. Per a…

via 2017 salary cap currently pegged at $166-169 million — ProFootballTalk