This paper determines a writing survey of the capital structure in large scale organizations and the thought of productive business sector theory in account. Wellsprings of money are one of the overwhelming components which should be evaluated in financing choices for organizations. The audit gives conceivable well springs of money to extensive scale organizations. Expense of capital in an organization can be characterized as the rate of return required by the financial specialists. At the end of the day return expected by money lenders and proprietors. The survey further explains a dialog relating to the expense of capital too. The Dominant hypotheses of capital structure have additionally been examined with reference to the hypothesis proposed by Modigliani and Miller, exchange off hypothesis and flagging hypothesis. At long last the paper examines the thought of effective business sector theory and the significance of it.