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 1% 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 Subtotals 162,400 66,400 Balance Not Past Due 1-30 Days Past Due 31-60 Days Past Due 61-90 Days Past Due Over 90 Days Past Due 738,300 435,600 36,900 Conover Industries 15,300 37,000 15,300 Keystone Company 19,600 19,600 Moxie Creek Inc. 7,300 7,300 Rainbow Company 9,900 9,900 Swanson Company 24,300 24,300 Totals 814,700 459,900 172,300 73,700 56,500 52,300 Percentage uncollectible 1% 6% 20% 30% 45% Allowance for Doubtful Accounts