Raising Medicare’s eligibility age from 65 to 67 years in 2014 would generate an estimated $7.6 billion in net savings to the federal government, but also would result in an estimated net increase of $5.6 billion in out-of-pocket costs for 65- and 66-year-olds, as well as $4.5 billion in employer retiree healthcare costs, according to a new Kaiser Family Foundation projection of the potential change suggested by several deficit-reduction plans.