Disadvantages of debit cards

• Use of a debit card is not usually limited to the existing funds in the account to which it is linked, most banks allow a certain threshold over the available bank balance which can cause overdraft fees if the users transaction does not reflect available balance.
• Many banks are now charging over-limit fees or non-sufficient funds fees based upon pre-authorizations, and even attempted but refused transactions by the merchant (some of which may be unknown until later discovery by account holder).
• Many merchants mistakenly believe that amounts owed can be "taken" from a customer's account after a debit card (or number) has been presented, without agreement as to date, payee name, amount and currency, thus causing penalty fees for overdrafts, over-the-limit, amounts not available causing further rejections or overdrafts, and rejected transactions by some banks.
• In some countries debit cards offer lower levels of security protection than credit cards. Theft of the users PIN using skimming devices can be accomplished much easier with a PIN input than with a signature-based credit transaction. However, theft of users' PIN codes using skimming devices can be equally easily accomplished with a debit transaction PIN input, as with a credit transaction PIN input, and theft using a signature-based credit transaction is equally easy as theft using a signature-based debit transaction.
• In many places, laws protect the consumer from fraud much less than with a credit card. While the holder of a credit card is legally responsible for only a minimal amount of a fraudulent transaction made with a credit card, which is often waived by the bank, the consumer may be held liable for hundreds of dollars, or even the entire value of fraudulent debit transactions. The consumer also has a shorter time (usually just two days) to report such fraud to the bank in order to be eligible for such a waiver with a debit card, whereas with a credit card, this time may be up to 60 days. A thief who obtains or clones a debit card along with its PIN may be able to clean out the consumer's bank account, and the consumer will have no recourse.

Federally Imposed Maximum Liability for Unauthorized Card Use (United States)

Reported	Maximum Card Holder Liability
	Credit Card	Debit Card
Before Use	$0	$0
Within 2 business days	$50	$50
After 2 but before 60 business days	$50	$500
After 60 business days	Unlimited	Unlimited

• In the UK and Ireland, among other countries, a consumer who purchases goods or services with a credit card can pursue the credit card issuer if the goods or services are not delivered or are unmerchantable. While they must generally exhaust the process provided by the retailer first, this is not necessary if the retailer has gone out of business. This protection is not provided by legislation when using a debit card but may be offered to a limited extent as a benefit provided by the card network, for example, Visa debit cards.
• When a transaction is made using a credit card, the bank's money is being spent, and therefore, the bank has a vested interest in claiming its money where there is fraud or a dispute. The bank may fight to void the charges of a consumer who is dissatisfied with a purchase, or who has otherwise been treated unfairly by the merchant. But when a debit purchase is made, the consumer has spent his/her own money, and the bank has little if any motivation to collect the funds.
• In some countries, and for certain types of purchases, such as gasoline (via a pay at the pump system), lodging, or car rental, the bank may place a hold on funds much greater than the actual purchase for a fixed period of time. However, this isn't the case in other countries, such as Sweden. Until the hold is released, any other transactions presented to the account, including checks, may be dishonoured, or may be paid at the expense of an overdraft fee if the account lacks any additional funds to pay those items.
• While debit cards bearing the logo of a major credit card are accepted for virtually all transactions where an equivalent credit card is taken, a major exception in some countries is at car rental facilities. In some countries, such as Canada & Australia, car rental agencies require an actual credit card to be used, or at the very least, will verify the creditworthiness of the renter using a debit card. In Canada and additional unspecified countries, car rental companies will deny a rental to anyone who does not fit the requirements, and such a credit check may actually hurt one's credit score, as long as there is such a thing as a credit score in the country of purchase and/or the country of residence of the customer.

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