What Is an Expense Ratio Calculator?
An expense ratio calculator shows you how much of your investment returns are consumed by fund management fees over time. It quantifies the long-term cost impact of mutual fund and ETF expense ratios, helping investors choose cost-efficient funds.
How to Use This Expense Ratio Calculator
- Enter your investment amount.
- Enter the fund’s expense ratio as a percentage (e.g., 0.5 for a low-cost fund or 1.0 for an actively managed fund).
- Enter the number of years you plan to hold the investment.
- Click “Calculate” to see the total cost of fees over the period, as well as your portfolio value with and without fees (based on an assumed 7% annual return).
Key Concepts
The expense ratio is the annual fee charged by a fund as a percentage of assets under management. Even small differences compound dramatically over decades: a 0.5% higher expense ratio on a $100,000 portfolio over 30 years can cost over $60,000 in lost returns. Index funds typically charge 0.03%–0.20%, while actively managed funds range from 0.50%–1.50%.
Annual Fee = Investment × (Expense Ratio ÷ 100)
Frequently Asked Questions
What is a good expense ratio?
For index funds, 0.03%–0.10% is excellent. For actively managed funds, below 0.50% is considered competitive. Any fund charging above 1.0% should demonstrably outperform its benchmark to justify the fee.
How does the expense ratio affect my returns?
The expense ratio is deducted from the fund’s total return before you receive it. A fund returning 8% with a 1% expense ratio delivers only 7% net to investors. Over decades, compounding amplifies this drag significantly.
Are expense ratios the only cost to consider?
No. You should also account for trading commissions, bid-ask spreads (for ETFs), taxes on distributions, and any front-end or back-end sales loads charged by certain mutual funds.