Many consumers use debit, credit and prepaid cards interchangeably to purchase goods and services. However, you should be aware that these three types of cards are quite different and that each card works differently.

If you use a credit card, you are borrowing money that you must pay back, in addition to interest, if you do not pay the balance in full by the due date.

woman giving plastic debit card to cashier at grocery store

But, if you use a debit card, which is issued by your bank and linked to your checking or savings account, the money taken from the account is yours and you will never incur interest charges.

With prepaid cards, you are spending the money deposited onto them, and they usually aren’t linked to your checking or savings account. Prepaid products include “general-purpose reloadable” cards, which display a network brand such as American Express, Discover, MasterCard, or Visa; gift cards for purchases at stores; and payroll cards for employer deposits of salary or government benefit payments. Ask about fees and, with certain types of these cards, the possibility of limited consumer protections against unauthorized transactions.

You can also incur a fee if you use a debit card for a purchase but there aren’t enough funds in the account, and you have given your financial institution written permission to charge you for allowing the transaction to go through. You can always decline or revoke overdraft protection if you don’t want to risk incurring these fees, and but future debit card transactions will be declined if you don’t have the funds in your account.

Similarly, a credit card issuer may decline a transaction that puts you over your credit limit unless you have explicitly agreed to pay a fee to permit over-the-limit transactions.

Prepaid cards are sometimes marketed with celebrity endorsements and promotional offers but you may have to pay various fees on the card. These costs may include monthly fees, charges for loading funds onto the card, and fees for each transaction.

As an alternative to a traditional checking account or prepaid card, consumers who don’t plan to write checks, but do want to bank electronically, may want to consider opening a “checkless” transaction account that allows you to pay bills and make purchases online or with a debit card.

Your liability for an unauthorized transaction varies depending on the type of card. Federal law limits your losses to a maximum of $50 if a credit card is lost or stolen. For a debit card, your maximum liability under federal law is $50 if you notify your bank within two business days after learning of the loss or theft of your card. But, if you notify your bank after those first two days, under the law you could lose much more.

Your liability for the fraudulent use of a prepaid card currently differs depending on the type of card. Federal law treats payroll cards the same as debit cards, but currently there are no federal consumer protections limiting your losses with other general-purpose, reloadable prepaid cards and store gift cards. The Consumer Financial Protection Bureau is considering increasing the consumer protections for prepaid cards, but any action is likely to be a year or more away.

Also take steps to guard any cards from thieves. Never provide any numbers in response to an unsolicited phone call, email, text message or other communication you didn’t originate. Immediately review your statement for unauthorized transactions.

To learn more about the three types of payment cards, visit http://www.fdic.gov/ for a “quick guide” to understanding the differences in the cards.