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Modigliani-Miller theorem

finance

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The Modigliani-Miller theorem is a foundational concept in corporate finance, developed by economists Franco Modigliani and Merton H. Miller. The theorem posits that a company's market value is primarily determined by its future earning potential, rather than its capital structure (i.e., the mix of debt and equity it uses).12

In essence, the theorem suggests that, under ideal conditions with no taxes or bankruptcy costs, how a company finances its operations is less important than the profitability of those operations. This work revolutionized financial theory by demonstrating that a firm's value is independent of its financing decisions. Modigliani also developed the life-cycle theory of savings, explaining how individuals save for retirement.21

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2 Britannica Sources
  1. Franco Modigliani
  2. Merton H. Miller

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