pters 5-9 Effect of Doubtful Accounts on Net Income During its first year of operations, Master Plumbing Supply Co. had sales of $540,000, wrote off $8,600 of accounts as uncollectible using the direct write-off method, and reported net income of $59,400. Determine what the net income would have been if the allowance method had been used, and the company estimated that 1 3/4 % of sales would be uncollectible.