# Pecking Order Theory
## Core Proposition
Firms prefer to issue debt when positive about future earnings. Equity is issued only when managers are doubtful and internal finance is insufficient.
The theory argues that capital structure decisions are affected by managers' choice of a source of capital that reveals the least amount of information (information asymmetry between insiders and outsiders).
## The Pecking Order (Hierarchy)
| Priority | Source | Reason |
|---|---|---|
| 1st | Internal Finance (retained earnings) | No information signalling; no flotation cost |
| 2nd | Debt (secured -> unsecured -> hybrid) | Limited information disclosure; tax shield |
| 3rd (last) | New Equity Issue | Sends negative signal; highest issuance cost |
## The Three Rules
- Rule 1: Use internal financing first.
- Rule 2: Issue debt next.
- Rule 3: Issue new equity shares at last.
## Why Equity is Last
Issuing new equity sends a negative signal to the market — investors infer that the stock may be overvalued, causing share price to fall. Managers therefore avoid equity issues except as a last resort.