When both debit and credit entries of a transaction are shown in the cash book, it is described as

When both debit and credit entries of a transaction are shown in the cash book, it is described as a contra entry. A contra entry is a type of double entry that occurs when the same account is debited and credited in the same transaction. In other words, it is an entry that nullifies the effect of another entry. In the case of a cash book, a contra entry is typically made when cash is deposited or withdrawn from a bank account. For example, if a company withdraws cash from the bank for office use, the cash account will be debited, and the bank account will be credited. However, if the company deposits cash into the bank, the cash account will be credited, and the bank account will be debited. This is an example of a contra entry, as the bank account is debited and credited in the same transaction.