Final answer:
The adjusting entry for interest owed as of December 31 is to debit Interest Expense for $200 and credit Interest Payable for $200. This reflects the cost incurred during the current period and the forthcoming liability to be paid.
Step-by-step explanation:
The adjusting entry for the interest owed on December 31 in response to borrowing $10,000 would involve recording the interest as an expense and a liability. Since the interest will not be paid until January 7 but was incurred by December 31, it is an accrued interest expense and has to be recognized on the December 31 financial statements.
Entry for Accrued Interest:
Debit Interest Expense $200
Credit Interest Payable $200
This entry increases the expense on the income statement for the current year and also increases the liabilities on the balance sheet, reflecting the obligation to pay the bank.