What are the main theories on dividend policy and which one is 'correct' for the CFA exam?
CFA Level II covers three dividend theories — MM irrelevance, bird-in-hand, and tax preference. They all seem to disagree with each other. How do I reconcile them, and what does the empirical evidence actually show?
Dividend policy theory is one of the most debated areas in corporate finance. Here's a clear breakdown of each theory and what the CFA exam expects you to know.
Theory 1: Dividend Irrelevance (Modigliani-Miller):
In perfect markets, dividend policy doesn't affect firm value. Investors can create 'homemade dividends' by selling shares if they want cash, or reinvest dividends if they don't. The firm's investment decisions (not payout decisions) determine value.
Assumptions: No taxes, no transaction costs, no information asymmetry.
Theory 2: Bird-in-Hand (Gordon & Lintner):
Investors prefer dividends over capital gains because dividends are certain while future capital gains are risky. A 'bird in the hand is worth two in the bush.' Firms that pay higher dividends are valued more because investors apply a lower required return.
Criticism: MM argued this confuses the risk of the firm's cash flows with the timing of the payout. The dividend doesn't reduce business risk — it just accelerates the cash flow to investors.
Theory 3: Tax Preference:
If capital gains are taxed at lower rates than dividends (historically true in many jurisdictions), investors prefer firms that retain earnings and deliver returns via capital appreciation. Low-dividend firms should be valued more highly.
Reconciliation for the Exam:
| Theory | Predicts Higher Dividends... | Key Assumption |
|---|---|---|
| MM Irrelevance | Don't matter | Perfect markets |
| Bird-in-Hand | Increase firm value | Investors are risk-averse to uncertain capital gains |
| Tax Preference | Decrease firm value | Capital gains taxed at lower rate |
What the Evidence Shows:
- Companies that initiate dividends see small positive stock price reactions (supports signaling, not bird-in-hand per se)
- Tax reform impacts (e.g., the 2003 US dividend tax cut) caused firms to increase dividends, supporting tax preference
- Investor clientele effects are real — retirees prefer dividend-paying stocks, growth investors prefer low-dividend stocks
The Practical Answer:
No single theory fully explains dividend policy. The CFA exam tests whether you can identify which theory is most consistent with a given scenario. If a question mentions 'uncertainty about future returns,' think bird-in-hand. If it mentions 'tax differential,' think tax preference. If it mentions 'perfect markets,' think MM irrelevance.
Practice dividend theory scenarios in our CFA Level II question bank.
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