Dear Marilyn,
1) Interest is given to the Shareholders. So the Interest given to the shareholders will be treated as expense by the Company. Therefore, the Interest on Calls in Advance will be debited.
2) The Shareholders account will be credited because the Interest is still payable to them.
3) The Accounting Rule will be interpreted as follows:-
i) Debit all expense so the Interest on Calls in Advance will be debited.
ii) Credit the giver so the Shareholders account will be credited.
Accounting Golden Rules :-
Nominal Account - Debit All Expenses and Lossess, Credit All Incomes and Gains.
Personal Account - Debit the Receiver, Credit the Giver.
Regards,
Devendra Kulkarni