2. Operating profit Sales revenues - Operating expenses Shows the profitability of current operations margin (or retum Sales revenues without regard to interest charges and income on sales) of taxes. Earnings before interest and taxes Operating income is known as EBIT in financial and business accounting Salesrevenues 3. Net profit margin Profits after taxes Shows after-tax profits per dollar of sales. for net return on Sales revenues sales) 4. Total return on Profits after taxes . Interest A measure of the return on total investment in the assets Total assets enterprise. Interest is added to after-tax profits to form the numerator, since total assets are financed by creditors as well as by stockholders