Calculation of interest.

Notwithstanding any agreement between the parties or any law for the time being in force, when pass book is supplied under section 24 or the statement is delivered to the debtor under section 25 or if the accounts are taken under section 36 or a tender is made by debtor to a money-lender in respect of a loan under section 37 on any day of the calendar month, the interest due shall be calculated as payable upto the actual date of repayment irrespective of the fact that such statement is delivered or pass book is supplied or such accounts are taken on any day of the calendar month.