Which method for uncollectible is required under Generally Accepted Accounting Principles (GAAP)? Direct write-off method Allowance method Both methods are a lowed under GAAP Neither method is a lowed under GAAP Which method for uncollectible accounts requires an estimation of uncollectible accounts at the end of each period? Died write-off method Allowance method Both methods require estimation of uncollectible accounts Neither method requires an estimation of uncollectible accounts The percentage of sales method estimates uncollectible accounts based on. Total balance in the accounts receivable account Credit sales for the period Total cash and credit sales for the period Net income