Swipe your debit card at the checkout register and there's an increasing chance that more than the purchase price and tax will be subtracted from your checking account. A fee for using the debit card also may be deducted. Debit card fees have been around a long time but they used to be pretty rare; now they're much more common.
The key to avoiding this charge is to say "credit card" when asked if you want your purchase treated as debit or credit. Here's the rest of the story [Source: bankrate.com]