indenture (plural indentures) (law) A contract which binds a person to work for another, under specified conditions, for a specified time (often as an apprentice). (law) A document, written as duplicates separated by indentations, specifying such a contract. An indentation. (Can we add an example for this sense?) Translations
What it is: Interest expense is the cost of money. Interest expense is recorded on the income statement. Let's assume you need $500,000 to buy a house. The price of borrowing that money is interest, and it is expressed as a percentage of the amount of money you obtain.
This is speculation, but perhaps the logic is that interest expense is a period expense already included in net income (part of operating activities), whereas the inflows and outflows of financing activities are balance sheet transactions.