If you have already paid the interest then entry would be the same as mentioned by @ sourav
but if it is not paid then instead bank a/c you need to park entry either into Interest payable a/c (Under outstanding expenses under current liabilities ) or you can park into the ledger to whom the loan is borrowed.
pls not as the Interest amount would be more than the threshold limit you.may have to deduct TDS @ 10%. Then one additional entry needs to be parked as
interest payable or borrower's a/c.........Dr to TDS on interest a/c