Credit Card

A credit card is a payment card that lets you make purchases using credit provided by the card issuer.

When you make a purchase, the amount you owe on the credit-card account generally increases. You normally pay this balance later.

How credit-card transactions work

Suppose you use a credit card to buy €500 of groceries.

At the time of the purchase:

  • €500 of spending is recorded.
  • The credit-card balance increases by €500.
  • €500 does not necessarily leave your bank account yet.
  • You owe the card issuer for the purchase.

When you later pay the €500 credit-card bill from your bank account:

  • €500 leaves your bank account.
  • The credit-card balance decreases by €500.
  • The payment itself is not new spending.

Credit cards and spending

A credit-card purchase represents spending when the purchase occurs, even though the money may leave your bank account later.

For example, if you buy €500 of groceries in March and pay the credit-card bill in April:

  • March: €500 of spending.
  • April: €500 of money out from the bank account.
  • The April payment does not represent another €500 of spending.

Counting both transactions as spending would count the same purchase twice.

Credit cards and balances

A credit card has its own account balance.

Purchases generally increase the amount owed, while payments reduce it.

For example:

  • Starting balance: €200
  • New purchase: €100
  • New balance: €300
  • Payment: €150
  • Remaining balance: €150

Interest, fees, refunds, and other transactions can also affect the balance.

Credit-card payments

A credit-card payment moves money from another account to the credit-card account.

For example, paying a €500 credit-card bill from a checking account means:

  • €500 is money out of the checking account.
  • €500 is money in to the credit-card account.
  • The credit-card balance decreases by €500.
  • No new spending occurs.

The original purchases are the spending events.

Credit cards and financial tracking

When tracking a credit card, it is useful to distinguish between:

  • The purchase that creates spending.
  • The credit-card balance created by purchases and other activity.
  • The payment made toward that balance.
  • The money out from the bank account used to make the payment.
  • Interest, fees, refunds, and other adjustments.

Keeping these events separate helps prevent credit-card purchases from being counted twice.

Credit card vs debit card

A debit card generally uses money already available in a linked bank account.

A credit card uses credit and creates an amount owed that is paid later.

This creates a potential difference between when spending occurs and when money leaves a bank account.