The aim of this research the effect of the sensitivity of external sources of cash flow and financial restrictions on companies listed in the Tehran stock exchange during 2013 to 2017. In this study, a sample of the top 80 companies listed on the stock exchange, in this study to test the hypothesis of statistical software eviews may be used. Found the sign you can to give relationship the money cash operational with size company s has limitations financial positive and meaning honey is. Also allergy references foreign to liquidity at company S limited at exchange bonds securities Tehran to limitations funds foreign more from others company the is. Changes funds cash at company S have Limitations financial ratio to company hi that limitations financial do not have, more impact at fund making has it.
