Return on Equity & Return on Assets

Introduction

Return on Equity (ROE) and Return on Assets (ROA) measure how efficiently a company turns its resources into profit. This lesson explains both and the caution around leverage.

Return on Equity (ROE)

ROE = Net income ÷ Shareholders' equity. It measures the return shareholders earn on their stake.

ROE = Net income / Equity

Generating far above 15–20% sustainably is generally excellent.

Return on Assets (ROA)

ROA = Net income ÷ Total assets. It measures how efficiently the company uses all its assets to generate profit.

ROA = Net income / Total assets

ROA is useful for comparing capital-intensive industries.

The Difference

• ROE focuses on the owners' capital
• ROA focuses on all assets regardless of how they're financed

The Leverage Trap

High debt can inflate ROE even when a business is weak, because the equity base is small relative to borrowed assets.

High debt -> small equity -> high ROE (may be misleading)

Always check profitability with ROA and margins too, and look at the debt level.

Using Them Together

Strong, safe business:  high ROE AND high ROA AND manageable debt
Risky sign:              high ROE but weak ROA (leveraged)

Real-World Example

Two banks both report 15% ROE. Bank A achieves it with strong net income and moderate leverage. Bank B achieves it with heavy debt and thin margins. Bank A has the higher-quality returns.

Summary

• ROE = net income ÷ equity (return to owners)
• ROA = net income ÷ total assets (asset efficiency)
• Leverage can inflate ROE misleadingly
• Use ROA and debt alongside ROE for a true picture
• High-quality returns come from real profitability, not leverage

Next Lesson

Are earnings real? Earnings quality and cash conversion.