A negative confirmation is a document issued by an auditor to the customers of a client company. The letter asks the customers to respond to the auditor only if they find a discrepancy between their records and the information about the client company's financial records that are supplied by the auditor. For example, a confirmation letter tells a customer that the client company's records at year-end show an ending accounts receivable balance for that customer of $500,000. If the customer agrees with this number, it does not have to contact the auditor to confirm the supplied information. The auditor will then assume that the customer agrees with the information presented to it in the confirmation.