Buckle up for disturbing news: your Social Security check may well go down in 2017 - and that is despite a 0.2% projected increase in the Social Security benefit. But this is inside the Beltway, Washington, D.C. reality, so know that many millions of Social Security recipients won't actually pay a scheduled Medicare increase and therefore won't see a decrease in their Social Security benefit. But other millions will. Confused? And in which camp are you - those who pay or those who don't?