Plugging back of the future of profit means the reinvestment by the concerns of its surplus in the business. it is an internal financial of the business and it is more suitable for the establishment firm for its expansion, modernization and replacement etc. this method of the finance has a number of the advantage as it sis cheapest rather cost free source of finance there is no needs to keeps security there is no dilution of the control, it ensure of stable dividend policy and gains confidence of the public. But excessive report to the plugging back of the profit may lead to the monopolies, misuse of funds over the capitalization and speculative