746. Interest on costs and expenses.

Interest at the rate reserved by the mortgage1 is usually allowed on outlays of a permanent nature, such as renewal fines2 or expenses of lasting improvements3, and expenses which there is no income to meet, such as premiums of life policies4, but not on the expense of ordinary repairs where the mortgagee is in receipt of the rents and profits5 except, perhaps, where the expense exceeds the balance of rents after payment of interest6.

The mortgagee is not entitled to interest on costs of proceedings, unless an order is made by which the costs are to be added to his