You hear the ads on the radio and see them on television, the Internet, even in the mail. Check cashers, finance companies and others are making small, short-term, high-rate loans that go by a variety of names: payday loans, cash advance loans, check advance loans, post-dated check loans or deferred deposit check loans.

Usually, a borrower writes a personal check payable to the lender for the amount he or she wishes to borrow plus a fee. In some cases, you can use your car or other property to secure the loan. The company gives the borrower the amount of the check minus the fee. Fees charged for payday loans are usually a percentage of the face value of the check or a fee charged per amount borrowed - say, for every $50 or $100 loaned. And, if you extend or “roll-over” the loan - say for another two weeks - you will pay the fees for each extension.

A cash advance loan secured by a personal check - such as a payday loan - is very expensive credit. Let’s say you write a personal check for $115 to borrow $100 for up to 14 days. The check casher or payday lender agrees to hold the check until your next payday. At that time, depending on the particular plan, the lender deposits the check, you redeem the check by paying the $115 in cash, or you roll-over the check by paying a fee to extend the loan for another two weeks. In this example, the cost of the initial loan is a $15 finance charge and 391 percent APR. If you roll-over the loan three times, the finance charge would climb to $60 to borrow $100.