Under this method of recognizing losses on credit sales, a contra asset account Allowance for Doubtful Accounts is reported on the balance sheet.
Prior to specifically identifying an account receivable as uncollectible, a company debits Bad Debts Expense and credits Allowance for Doubtful Accounts for an estimated amount.
The estimate could be based on a percentage of sales or it could be based on the age of its accounts receivables.