. assuming all other things equal , we expect to achieve aggregate annual pre-tax expense savings of approximately $ 540 million by the end of 2014 , for a total annual pre-tax expense savings of approximately $ 600 million to be realized in 2015 . we expect the business operations transformation component of the program to result in annual pre-tax expense savings of approximately $ 440 million in 2015 , with the majority of these savings expected to be achieved by the end of 2013