Estimating Allowance for Doubtful Accounts Kirchhoff Industries has a past history of uncollectible accounts, as shown below. Age Class Not past due 1-30 days past due 31-60 days past due 61-90 days past due Percent Uncollectible 2% 6 20 30 Over 90 days past due 45 Estimate the allowance for doubtful accounts, based on the aging of receivables schedule below. Kirchhoff Industries Aging of Receivables Schedule Customer Balance Subtotals 175,800 Not Past 1-30 Days 31-60 Days 61-90 Days Over 90 Days Due Past Due Past Due Past Due 798,900 471,400 Past Due 71,900 39,900 39,900 Conover Industries 17,900 17,900 Keystone Company 20,700 20,700 Moxie Creek Inc. 6,700 6,700 Rainbow Company 9,500 9,500 Swanson Company 26,300 26,300 Total receivables 880,000 497,700 185,300 78,600 60,600 Percentage uncollectible 2% 6% 20% 30% 57,800 45% Allowance for Doubtful Accounts