A year-end review of accounts receivable and estimated uncollectible percentages revealed the following: Category Accounts Receivable Uncollectible percentages 1-30 days $40,000 1.5% 31-60 days $10,000 8.0% 61-90 days $6,000 15.0% The beginning balance of Allowance for Doubtful Accounts is $400 (credit). Based on this information, the bad debt expense for the year is: