65% of Americans save little or nothing—and half could end up struggling in retirement

Despite a low unemployment rate and increasing wage growth, Americans still aren't saving much. That's according to a new survey from Bankrate.com, which found that 20 percent of Americans don't save any of their annual income at all and even those who do save aren't putting away a lot.

Only 16 percent of survey respondents say that they save more than 15 percent of what they make, which is what experts generally recommend. A quarter of respondents report saving between 6 and 10 percent of their income and 21 percent say they sock away 5 percent or less.