Every business has its own core activities which are referred to as the Operating Activities.
Operating Income or Operating Profit refers to the profit that a business has after paying for all its Operating Expenses that include raw material costs, employee costs and all other operating bills. It is the amount available to cover the Interest & Tax obligations of the business. The Operating Profit when divided by the Revenue from Operating Activities gives us Operating Margin or Operating Profit Margin. It is a type of Profitability Ratio which implies how much a company earns as profit for every rupee of its sales.