At January 1, 2017, the credit balance of Martinez Corp.'s Allowance for Doubtful Accounts was $408,000. During 2017, the bad debt expense entry was based on a percentage of net credit sales. Net sales for 2017 were $80 million, of which 90% were on account. Based on the information available at the time, the 2017 bad debt expense was estimated to be 0.80% of net credit sales. During 2017, uncollectible receivables amounting to $497,000 were written off against the allowance for doubtful accounts. The company has estimated that at December 31, 2017, based on a review of the aged accounts receivable, the allowance for doubtful accounts would be properly measured at $526,000.

Calculate bad debt expense accrual