Dividend irrelevance theory
Taught by Ben Wilson · AI tutor support included
You'll learn Miller and Modigliani's dividend irrelevance theory and understand why it doesn't hold up in reality. This video covers the core theory, the simplifying assumptions behind it, and practical critiques of each assumption—including taxation, transaction costs, information asymmetry, and market efficiency.
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In this lesson
- 0:00 Dividend irrelevance theory overview
- 1:10 Miller and Modigliani's core proposition
- 3:04 Shareholder wealth effects explained
- 3:47 Four key assumptions behind the theory
- 5:42 Critiquing assumptions in reality
- 8:16 Exam question walkthrough
- 10:42 Summary and key takeaways
About this lesson
Essential for FM and AFM papers, this foundation helps you evaluate dividend policy decisions and spot exam questions testing your grasp of why dividends matter in the real world. The theory states that shareholder wealth is unaffected by whether a company pays dividends now or retains cash for future payouts, provided funds are invested in positive NPV projects. Miller and Modigliani's model rests on four key assumptions: no taxation, no transaction costs, perfect information availability, and perfectly efficient capital markets. By understanding these assumptions, you'll see exactly where theory breaks down and why companies and investors behave differently in practice. The video walks you through each assumption and its real-world failure. Tax rates differ between dividends and capital gains, transaction costs discourage share sales, investors lack perfect information and react to dividend cuts as negative signals, and capital markets can't fund all positive NPV projects. You'll also work through an exam-style question to practise identifying statements consistent with the theory, reinforcing your ability to distinguish between irrelevance theory and the factors that make dividends genuinely relevant to shareholders.
Duration: 11m
Transcript
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