Less as a percent of the salary cap over the period of the contract(s). Mahomes' Contract Mahomes new money is 450M over 10 years with the 10 years starting in 2022. The NFL salary cap has increased on average 6.52 percent over the past 10 years. Using the same 6.52 percent, the NFL cap projects to average 303.76M the 10 year period. Mahomes 45M average is 14.8 percent the projected NFL cap. Dak's Contract A 5 year contract for Dak at 35M would be 16.4 percent of the projected cap. If Dak's agent wants to use Mahomes' contract as a basis for a 5 year contract for Dak: 33.5M over 5 years is the same 14.8 percent of the cap as Mahomes' contract.