Question 1

What's the difference between ROI and CAGR?

Accepted Answer

ROI is the total return over the entire investment period, while CAGR is the annualized return assuming constant growth each year. 50% ROI over 3 years equals about 14.5% CAGR.

Question 2

Is higher ROI always better?

Accepted Answer

Not necessarily. Don't judge investments by ROI alone. Consider investment period, risk level, liquidity, and taxes comprehensively.

Question 3

What does negative ROI mean?

Accepted Answer

Negative ROI means you lost money. For example, -20% ROI means you lost 20% of your investment.

Question 4

How do I account for taxes and fees?

Accepted Answer

For accurate returns, calculate using actual net profit after deducting taxes (capital gains, dividend taxes) and transaction fees.

Question 5

What about inflation-adjusted real returns?

Accepted Answer

Real return = ((1 + nominal return) / (1 + inflation rate) - 1) × 100. A 5% return with 3% inflation gives about 1.9% real return.

ROI計算機

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✨ 主な機能

📐 計算式

💡 計算原理

❓ よくある質問

Q. What's the difference between ROI and CAGR?

Q. Is higher ROI always better?

Q. What does negative ROI mean?

Q. How do I account for taxes and fees?

Q. What about inflation-adjusted real returns?