A credit is an entry in accounting that records a decrease in assets or an increase in liabilities, as well as a decrease in expenses or an increase in revenue. A credit increases the company's net income, while a debit decreases it.

A credit is an entry that records a sum that has been received in the context of personal banking or financial accounting. An account register traditionally shows credits (deposits) on the right and debits (money spent) on the left.

Accounting transactions always affect at least two accounts, with a debit entry being recorded against one account and a credit entry being recorded against the other account. An account can be involved in more than one transaction - but a minimum of two accounts is required. Whenever a transaction's debits and credits equal each other, it is said that the transaction is "in balance." If a transaction were not in balance, then it would not be possible to create financial statements. As a result, the most important control over accounting accuracy is the use of debits and credits in a two-column recording format.

A single-entry bookkeeping system does not utilize debits and credits. This system only makes one entry of a transaction, usually an entry in a checkbook or cash journal, indicating the receipt or expenditure of cash. Single-entry systems are only designed to produce income statements. To produce a balance sheet, a single entry system must be converted to a double-entry bookkeeping system.