Modigliani And Miller's Theory: The Perfect Conditions Of The Market

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The results obtained from the cooperation of Modigliani and Miller in 1958, was an attempt to prove that the financial decisions should not be significant in the perfect conditions of the market, after being published the Modigliani and Miller theory became the main theory of the capital structure. In the M&M theory it suggested that the market is fully efficient, meaning that there are no taxes, however in the theory Modigliani and Miller included the taxes to be able to reflect their theories in reality, and the theory also suggested that there are no bankruptcy costs. There are three propositions that were published by Modigliani and Miller which are: • Proposition 1: A firm’s total market value is independent of its capital structure. • Proposition 2: The cost of equity increases with its debt-equity ratio. • First Proposition: Irrelevance of the Capital Structure: The market value is not affected by the firm’s capital structure, that’s what the M&M first proposition stated; in proposition one it is stated that under certain conditions the firm’s debt equity has got no effect on the firm’s market value. This approach is based on the below: Capital Structure is perfect: Assuming that there are no costs applied, and the investors have the ability to buy and sell securities and they also have the knowledge of any change; no costs for buying or selling of securities for brokers for example. Modigliani and Miller’s assumption is that all of these capital market factors which is needed for trading of securities are all perfect. Modigliani & Miller applied their theories with two modules, one which doesn’t include the taxes and this is their first findings, and another one with taxes to make it more realistic. The First Proposition without

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