A credit entry in an asset account will reduce the account's usual debit entry. A credit entry in a revenue, liability, or owner's equity account will increase the usual credit balance.
A credit could also mean your bank has increased your bank account balance. Your bank account is a liability for your bank and when your bank account increases, your bank has a larger obligation to you.
Credit can also refer to loans, such as line of credit, letter of credit, credit rating, as so on.
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