Effective May 1, 2016, new changes to Social Security could affect 21.3 million Americans who will no longer be eligible to collect an estimated $11.4 billion in crucial benefits. If you are currently enrolled in Social Security, or are about to become eligible, this may affect you. Appointments at Social Security offices will need to be made no later than April 29, 2016, if you are implementing any of the two below programs which will end May 1.