The NBA utilizes a soft salary cap system in order to give teams strapped for cash a way to improve their squads. It does have limits, however. 

Teams that employ a player for more than one season own the rights to that player, gving them an advanatge in contract negotiations.

There is always an exception to a rule defined in the Collective Bargining Agreement. Here we attempt to touch on all of them as they are plentiful.

The NBA places strict rules on roster sizes and how those can be manipulated throughout the course of a season. Here is a short look at what that entails.