Have you ever had to pay an overdraft penalty? You're far from alone if you have incurred such a fee, according to a survey of consumers commissioned by by Pew's Safe Checking in the Electronic Age Project.

In Overdraft America: Confusion and Concerns about Bank Practices, the Pew survey found that about one-fifth (18 percent) of consumers were hit with an overdraft penalty fee in the past year. As you can see from the chart, almost three-quarters of those with an overdraft incurred a penalty fee. The typical penalty is $35.

The study reports that the overdraft rules are poorly understood. Two groups in particular run into trouble: the young and low-income consumers.

Read the full article at marketplace.org.