Credit card

What makes the credit card a payment method

The credit card is a payment method settled through a card network. The customer gains a payment term, because the charge appears on the card statement later. For the retailer the payment is usually guaranteed immediately, which makes it, alongside purchase on invoice, the most popular choice when delivery and payment are to be separated in time.

In international selling it is the single most important method. Anyone selling into several countries cannot avoid it, because it is accepted in almost every market and does not require a local account.

How the payment works technically

The process has four stations. The customer enters card data, which travels encrypted to the payment provider. The provider requests an authorisation from the card issuer, meaning the promise that the amount is reserved. The answer comes back and the shop may ship. The actual settlement and payout to the merchant follow afterwards, usually on its own cycle.

The distinction between authorisation and charge matters. An authorisation only reserves the amount. It expires after a few days when no charge follows, which with delayed shipping means the reservation lapses and the payment has to be requested again.

What 3D Secure changes

3D Secure is an additional confirmation step in which the customer clears the payment with their bank, usually by app or one time code. Liability shifts as a result: once the clearance is given, the bank carries a fraud case; without it, the risk stays with the retailer. In the EU it is mandatory for most card payments, with exceptions for small amounts and for trusted beneficiary lists.

The extra step lowers the fraud rate and raises the drop off rate. Optimisation lies in requiring it only when the risk demands it and in shaping the redirect to the bank page cleanly, so it does not look like leaving the shop.

What determines the cost

• Rate per transaction: it is made up of network fees, the banks involved and the provider's margin.
• Card type: corporate cards and cards from third countries cost more than domestic private cards.
• Currency: foreign currency adds conversion fees.
• Chargebacks: they carry their own fee and tie up handling time, regardless of whether they are justified.

Why payments get declined

A decline is not always about insufficient funds. Common reasons are a wrongly entered expiry date, foreign use not enabled, a missing confirmation step or a bank block because of an unusual pattern. Frequent declines at a shop often point to a problem in its own setup, such as a missing address check or a pattern that triggers fraud rules.

Frequent questions

• Is the card cheaper than purchase on invoice? Usually yes, because the default risk sits with the card network.
• Do I need a separate contract per card? No, the provider bundles the networks.
• What is PCI DSS? A standard for handling card data. Anyone who never touches it themselves cuts the audit effort considerably.