Retirees are often thought to be living on fixed incomes, but most of them are collecting Social Security benefits, and those benefits are not exactly fixed -- because they're increased nearly every year via cost of living adjustments (COLAs). It's important to understand what COLAs do -- and how they can affect your retirement.

Key Points President Trump wants to eliminate taxes on Social Security. His plan has a major flaw that needs to be accounted for. It’s unclear as to whether his idea will get broad lawmaker support. Are you ahead,

There are many retired Americans today who get a good chunk of their income from Social Security. But unfortunately, they don’t necessarily get to keep those benefits in full. That’s because laws created decades ago have made it so that Social Security benefits are subject to federal taxes (and there are even some states that