In a sales ledger, contra entry is found on the credit side of the debtors' control account.
A contra entry is an entry that cancels the effect of a previous entry in the books of accounts. In a sales ledger, a contra entry arises when a debtor who owes money to the organization also becomes a creditor who is owed money by the organization.
For example, if a debtor makes a payment for goods or services that they previously purchased on credit, then this will be recorded as a credit entry in their account. At the same time, the organization owes the debtor money for some other reason, such as a refund or a rebate. This will be recorded as a debit entry in the debtor's account.
The two entries in the debtor's account cancel each other out and are known as a contra entry. The credit entry is recorded on the credit side of the debtor's control account, and the debit entry is recorded on the debit side of the debtor's control account.
Therefore, in a sales ledger, a contra entry is found on the credit side of the debtor's control account. This helps to keep track of the amounts owed by the organization to its debtors and also helps to reconcile the accounts of the debtors.