Final answer:
The adjustment for estimated uncollectible accounts would be $2,000, which is 2% of Sully Corporation's credit sales, as only credit sales are subject to potential bad debt.
Step-by-step explanation:
Sully Corporation, using an allowance method for accounting for bad debt expense, estimates that 2% of sales will eventually become uncollectible. Since Sully has $100,000 in credit sales, to which the bad debt expenses apply (cash sales are not considered given that payment is received immediately), they calculate the adjustment for estimated uncollectible accounts as follows:
Estimated bad debt expense = 2% of credit sales
Estimated bad debt expense = 2% of $100,000
Estimated bad debt expense = $2,000
Therefore, the adjustment required would be a debit of $2,000 to Bad Debt Expense and a credit of $2,000 to Allowance for Doubtful Accounts.