Interest expenses has debit balance as default normal balance so debit don’t decrease it rather increase it and to reduce it credit is required as it is opposite of it.
Notes Payable - I hope that wasn't for an exam.
DEBIT
debit interest expense, credit interest payable for the accrued amount
Interest expense is shown at debit side of income statement because it is an expense for business.
Debit Accrued Interest Expense Credit Accrued Interest Payable
[debit] Interest expense [credit]interest payable
all expenses are debited
all expenses are debited
debit interest expensescredit interest payable
debit interest receivablecredit interest income
Debit notes payable and interest expense
debit loan accountcredit owners equityDebit Loan Payable Debit Interest Expense Credit Paid in Capital