Cards look alike in a wallet, but what sits behind them differs. The type of card mostly tells you one thing: where the money comes from when the cardholder pays.
With a credit card, the issuer lends the money. It pays for the purchase up front, and the cardholder repays later, with interest if they don’t clear the balance. When the issuer approves a payment, it is checking that the cardholder has credit available, and it carries the risk that the money never comes back.
With a debit card, the money is already in the cardholder’s bank account, so the issuer isn’t lending anything. It still has to check the balance in real time. The amount is usually held at authorization and taken for good when the payment clears.
With a prepaid card, the value is loaded onto the card in advance, often without a bank account behind it. Gift cards, travel cards and payroll cards are common examples. The issuer checks the prepaid balance, and when it runs out, payments are declined.
A virtual card is different in kind. It describes the form, not the funding: a card number with no plastic, created in seconds and used online or in a wallet. It can sit on top of a credit, debit or prepaid account. Cards for businesses follow the same pattern, adding spending controls and reporting on top of one of these funding models.
The point to hold on to is that the network doesn’t care how a card is funded. It carries the same message either way. Whether “approved” means credit available, enough balance or prepaid value remaining is the issuer’s decision, made inside the issuer’s own systems. It is the same split as in the last post: the network moves the message, and the issuer decides.
It also explains behaviour you’ll meet later. A hold on a credit card reduces available credit. A hold on a debit or prepaid card takes real money out of reach, and customers notice that much sooner.
One caution for a global reader: how a market treats debit varies. In some countries most debit runs on the global networks. In others, domestic schemes dominate, and the experience at the terminal is different.
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