Signing bonuses are prorated over the life of the contract. So, if a guy gets a $10Mil signing bonus over 5 years, it counts 2Mil against the cap every year. Doesn't matter if he gets all $10Mil up front, defers half, some or all of it. Until he's cut Signing bonuses still count against the cap if you're cut though, right? Because that's guaranteed money. The point is it is no longer prorated at $2m every year. If you cut a guy after year 3 then the remaining balance of the prorated bonus is pushed up to the "league year" you are operating in.