The income statement approach to estimating uncollectible accounts is called the method. The balance sheet approach to estimating uncollectible accounts is called the method.

The income statement approach to estimating uncollectible accounts is called the percent-of-sales method. The balance sheet approach to estimating uncollectible accounts is called the aging-of-receivables method.

The percent-of-sales method is a forecasting method in which business accounts are calculated as the percent of sales. These are now used in estimating the future value of these accounts.

The aging-of-receivables method is used in determining opening accounts given the duration of time that the invoice has been unattended.

It is used in estimating uncollectible accounts like receivables, debts, and loans that have little chance of being repaid.

Learn more about aging of account receivables method here:

link

The income statement approach to estimating uncollectible accounts is called the Direct write off  method. The balance sheet approach to estimating un-collectible accounts is called the Allowance method.

An allowance method in financial terms is a method that records the expenses on the bad debt in the same period as that of the sales.

The Direct write-off method refers to the financial concept of bad debt that arises through the credit sales. An account receivable is written-off directly to the expense section but that too only when the account is deemed un-collectible.