Unlike EPM or Infinia, Premier has a no-nonsense criteria: Maintain Premier Account Status i.e. 40L worth of real relationship value with the bank (Not just cash, Demat or FD counts too).
The salary criteria for Opening the Premier account is 3L net deposit after all deductions (including PF). But RM mentioned that it is just for opening and the relationship value criteria needs to be built within the 1 year of opening to maintain Premier status.
My Gripes: 40L is a considerable amount to maintain for a credit card. The returns that can be generated from properly investing that amount is several times more than the max benefit from the Premier Credit Card for me. Make sure it makes financial sense for you