You are at the checkout counter at the local supermarket and use your debit card to pay for your groceries. Where does the money for this purchase come from?

It is deducted directly from your checking account.

Explanation:

When using your debit card and you select the credit option it will still be debited from your checking account after a few days.

For example you use visa and process a transaction as a credit transaction, it is processed through visa network. You are authorising a debit to your account and you are not charged interest for the transaction.

The transaction amount is not taken immediately but takes a few days for the card company to remove the money from your account.

answer; commerce clearing house;