Nearly Half of Retirees Aren't Receiving Their Full Social Security Benefits -- Here's Why

When you're nearing retirement, it's essential to determine how much income Social Security will provide. These retirement benefits are guaranteed to last for life and will probably be an important source of funds once you're no longer getting a paycheck.

Unfortunately, many retirees don't take into account the fact they don't get to keep all of their benefits. In fact, close to half of all retirees lose some of this retirement income for one simple reason. Here's what it is.

Image source: Getty Images.

Source Fool.com