Although many debit cards are of the Visa or MasterCard brand, there are many other types of debit card, each accepted only within a particular country or region, for example Switch (now: Maestro) and Solo in the United Kingdom, Carte Bleue in France, Laser in Ireland, "EC electronic cash" (formerly Eurocheque) in Germany and EFTPOS cards in Australia and New Zealand. The need for cross-border compatibility and the advent of the euro recently led to many of these card networks (such as Switzerland's "EC direkt", Austria's "Bankomatkasse" and Switch in the United Kingdom) being rebranded with the internationally recognised Maestro logo, which is part of the MasterCard brand. Some debit cards are dual branded with the logo of the (former) national card as well as Maestro (e.g. EC cards in Germany, Laser cards in Ireland, Switch and Solo in the UK, Pinpas cards in the Netherlands, Bancontact cards in Belgium, etc.).

Banks in France charge annual fees for debit cards (despite card payments being very cost efficient for the banks), yet they do not charge personal customers for chequebooks or processing cheques (despite cheques being very costly for the banks). This imbalance most probably dates from the unilateral introduction in France of Chip and PIN debit cards in the early 1990s, when the cost of this technology was much higher than it is now. Credit cards of the type found in the United Kingdom and United States are unusual in France and the closest equivalent is the deferred debit card, which operates like a normal debit card, except that all purchase transactions are postponed until the end of the month, thereby giving the customer between 1 and 31 days of interest-free credit. The annual fee for a deferred debit card is around €10 more than for one with immediate debit. Most France debit cards are branded with the Carte Bleue logo, which assures acceptance throughout France. Most card holders choose to pay around €5 more in their annual fee to additionally have a Visa or a MasterCard logo on their Carte Bleue, so that the card is accepted internationally. A Carte Bleue without a Visa or a MasterCard logo is often known as a "Carte Bleue Nationale" and a Carte Bleue with a Visa or a MasterCard logo is often known as a "Carte Bleue Internationale". Many smaller merchants in France refuse to accept debit cards for transactions under €15.25 (equivalent to 100 French Francs) because of the minimum fee charged by merchants' banks per transaction. Merchants in France do not differentiate between debit and credit cards, and so both have equal acceptance.

In the United Kingdom, banks started to issue debit cards in the late 1980s in a bid to reduce the number of cheques being used at the point of sale, which are costly for the banks to process. As in most countries, fees paid by merchants in the United Kingdom to accept credit cards are a percentage of the transaction amount, which funds card holders' interest-free credit periods as well as incentive schemes such as points, airmiles or cashback. On the contrary, debit cards do not usually have these characteristics, and so the fee for merchants to accept debit cards is a low fixed amount, regardless of transaction amount. This means it is cheaper for a merchant to accept a debit card for a large amount and to accept a credit card for a small amount. Although merchants won the right through The Credit Cards (Price Discrimination) Order 1990 to charge customers different prices according to the payment method, few merchants in the UK charge less for payment by debit card than by credit card, the most notable exceptions being budget airlines, travel agents and IKEA. Debit cards in the UK lack the advantages offered to holders of UK-issued credit cards, such as free incentives (points, airmiles, cashback etc), interest-free credit and protection against defaulting merchants under Section 75 of the Consumer Credit Act 1974. Despite these disadvantages of debit cards over credit cards, many people in the UK prefer paying with debit cards rather than credit cards, often because they fear that using credit cards will result in accumulation of unmanageable debts. Almost all establishments in the United Kingdom that accept credit cards also accept debit cards (although not always Solo and Visa Electron), but a minority of merchants, for cost reasons, accept debit cards and not credit cards (for example the Post Office).

In Germany and Belgium, many merchants, including most supermarkets, do not accept credit cards because of the higher fees charged by their banks. However, most merchants usually accept debit cards, because the fees for accepting them are much lower, for example in Germany 0.3% with a minimum of €0.08.

In Poland, local debit cards, such as PolCard, have become largely substituted with international ones, such as Visa, MasterCard, or the unembossed Visa Electron or Maestro. Most banks in Poland block Internet and MOTO transactions with unembossed cards, requiring the customer to buy an embossed card or a card for Internet/MOTO transactions only. Recently however the number of banks which do not block MOTOIO transactions on unembossed cards is increasing.

In some countries (e.g. the United States and Australia), terminals allow the user of a Visa or MasterCard debit card to choose whether the purchase is a "credit" or "debit" purchase. In a "credit" purchase, the user signs a charge slip (as in a traditional credit card purchase); in a "debit" purchase, the user enters a PIN. In either case, the user's bank account is debited.

In some countries and with some merchant service organisations (as of this writing), a "credit" transaction is without cost to the purchaser beyond the face value of the transaction, while a small fee may be charged for "debit" transactions (although it is often absorbed by the retailer.) Other differences are that "debit" purchasers may opt to withdraw cash in addition to the amount of the debit purchase (if the merchant supports that functionality); also, from the merchant's standpoint, the merchant pays lower fees on a "debit" transaction as compared to "credit" transactions.

The fees charged to merchants on "credit" debit card purchases -- and the lack of fees charged merchants for processing "debit" debit card purchases and paper checks -- have prompted some major merchants to file lawsuits against debit-card transaction processors such as Visa and MasterCard. Visa and MasterCard recently agreed to settle the largest of these lawsuits and agreed to settlements of billions of dollars.

Many consumers prefer "credit" transactions because of the lack of a fee charged to the consumer/purchaser -- and many terminals at PIN-accepting merchant locations now make the "credit" function more difficult to access. Also, in the case of a benign or malicious error by the merchant and/or bank, a debit transaction may cause more serious problems (e.g. money not accessible; overdrawn account) than in the case of a credit or charge card transaction (e.g. credit not accessible; over credit limit).

To the consumer, a debit transaction is perceived as occurring in real-time; i.e. the money is withdrawn from their account immediately following the authorization request from the merchant, which in some countries, is the case when making a PIN-based purchase. However, when a purchase is made using the "credit" option, the transaction places an authorization hold on the customer's account which then may take several days to be reconciled and hard-posted to the customer's account. This is in contrast to a typical credit card or charge card transaction which can have a lag time of a few days before the transaction is posted to the account, and many days to a month or more before the consumer makes repayment with actual money.

The two types of transactions are actually online ("Debit") and offline ("Credit") as described in the previous paragraph.