What Is an Expense Ratio?
In plain English
An expense ratio is the annual cost of owning a mutual fund or ETF, expressed as a percentage of your invested assets. It covers portfolio management, administration, marketing, and other operational costs. The fee is deducted automatically from the fund's returns each year, meaning it reduces your net investment gain without appearing as a separate line-item charge.
How Much Does an Expense Ratio Cost You Over Time?
The impact of expense ratios compounds dramatically over decades. An investor with $100,000 earning 7% annually over 30 years would have about $761,000 in a fund with a 0.05% expense ratio, but only $574,000 in a fund with a 1.00% expense ratio — a difference of nearly $200,000. This is why minimizing fund costs is generally associated with improved investment returns over time.
What Is a Good Expense Ratio to Look For?
For index funds and ETFs, expense ratios below 0.20% are generally excellent. The industry's lowest-cost options — like Fidelity's ZERO funds and Vanguard's index ETFs — charge as little as 0.03%. Actively managed funds typically charge 0.5% to 1.5%, which may be justified in some cases but requires consistent outperformance just to break even with a comparable index fund.
Are There Other Fees Beyond the Expense Ratio?
Yes. Some mutual funds charge sales loads — upfront (front-end load) or upon selling (back-end load) — which can be 3% to 5% of your investment. Others charge redemption fees or purchase fees. Many brokerages have also historically charged trading commissions. When evaluating a fund, look at the total cost of ownership, not just the expense ratio.
Frequently asked questions
Is a 1% expense ratio too high?
For most passive index fund investing, yes. A 1% expense ratio is 10 to 30 times higher than what top index funds charge. For the fee to be worthwhile, an active fund must consistently outperform its benchmark by more than 1% per year after taxes — something most active funds fail to achieve.
How do I find a fund's expense ratio?
Expense ratios are disclosed in each fund's prospectus and are widely available on brokerage platforms and financial sites like Morningstar. Look for it in the fund's overview or fee section. It is always expressed as a percentage — for example, 0.04% — and represents what you pay annually per $1,000 invested.
Keep exploring
Related terms
Index Fund
An index fund is a type of investment fund that tracks a specific market index, like the S&P 500. It offers broad diversification at very low cost and is a cornerstone of passive investing.
Mutual Fund
A mutual fund pools money from many investors to purchase a diversified portfolio of stocks, bonds, or other securities. It is managed by a professional portfolio manager and priced once daily.
ETF (Exchange-Traded Fund)
An ETF is a basket of securities that trades on a stock exchange just like a single stock. ETFs combine the diversification of mutual funds with the flexibility and low cost of individual stock trading.
Passive Income
Passive income is money earned with minimal ongoing effort, generated from investments or assets you have already set up. In investing, common passive income sources include dividends, bond interest, REIT distributions, and rental income.
Robo-Advisor
A robo-advisor is an automated digital investment platform that builds and manages a diversified portfolio on your behalf based on your goals and risk tolerance. Robo-advisors offer professional-grade portfolio management at very low cost.