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% 5 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 Not Balance Past Due 1-30 Days 31-60 61-90 Over 90 Days Days Days Past Past Due Past Due Past Due Due Subtotals 764,800 451,200 168,300 68,800 38,200 38,300 Conover 19,900 19,900 Industries Keystone 15,100 15,100 Company Moxie Creek Inc. 9,100 9,100 Rainbow 7,900 7,900 Company Swanson Company 27,600 27,600 Totals 844,400 478,800 176,200 77,900 53,300 58,200 Percentage 1% 5% 20% 30% 45% uncollectible Allowance for Doubtful Accounts