What Is a Good Expense Ratio for an ETF?
An expense ratio is the one fund cost you pay every single year, on your whole balance, forever. Here's where the line sits between cheap, acceptable, and too expensive.
Don't have time? Here's what you need to know:
- 1Under ~0.10% is excellent, ~0.20% is acceptable, and over ~0.50% is a meaningful drag for a broad index fund.
- 2The cheapest broad-market ETFs charge just 0.03% — the benchmark to measure every other fee against.
- 3Fees are charged yearly on your whole balance, so a 0.47% gap compounds into five or six figures over decades.
- 4Higher fees can be justified for genuinely hard-to-replicate strategies, but keep your core holdings cheap.
The Quick Benchmark
For a broad, plain-vanilla index ETF, anything under about 0.10% is excellent, up to roughly 0.20% is acceptable, and over about 0.50% is a meaningful drag you should justify carefully. The cheapest broad-market funds — total U.S. market and S&P 500 ETFs — charge just 0.03%, which is the benchmark to measure everything else against. At 0.03%, you pay $3 a year per $10,000 invested.
The expense ratio is the annual percentage a fund skims off your assets to cover its costs. It's deducted automatically from the fund's value, so you never see a bill — which is exactly why it's easy to ignore and important not to. It's also the single most reliable predictor of how two similar funds will diverge over time.
Where the Lines Fall
Context matters: 0.50% is outrageous for an S&P 500 fund but reasonable for a specialized active or niche strategy that's genuinely hard to replicate. Still, for the core building blocks most people use — broad U.S., international, and bond index funds — there's no reason to pay more than a few basis points. The table below maps the rough tiers for standard index ETFs.
The key discipline is to compare like with like. A total-market fund at 0.03% and one at 0.15% own nearly the same stocks, so the cheaper one essentially has to win. But comparing a 0.03% index fund to a 0.45% sector or thematic fund isn't apples-to-apples — they do different jobs. Judge the fee against what the fund actually delivers and against its closest competitors.
| Expense ratio | Verdict | Example |
|---|---|---|
| 0.00-0.10% | Excellent | Broad index ETFs (VTI, VOO at 0.03%) |
| 0.10-0.20% | Acceptable | Niche index, some international |
| 0.20-0.50% | Watch it | Smart-beta, factor, active ETFs |
| Over 0.50% | A real drag | Many active and thematic funds |
Why a Few Basis Points Compound
The reason a 0.50% fee matters so much more than it sounds is that it's charged every year on your entire balance, and the money it removes can no longer compound. A 0.50% annual fee versus 0.03% is a difference of 0.47% per year — which seems trivial until you run it across decades on a growing balance, where it can quietly cost a five- or six-figure chunk of your final wealth.
Put concretely: on a $100,000 portfolio, a 0.50% fund costs $500 a year versus $30 for a 0.03% fund. That $470 annual gap, compounded over 30 years on a portfolio that's also growing, snowballs into a very large number. Use the ETF return calculator to see how a fee difference plays out on your own timeline — the result tends to surprise people.
Tip: Compare any fund's fee to a 0.03% total-market ETF. Every basis point above that is a hurdle the fund must overcome each year just to match a simple index — and most don't.
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When a Higher Fee Can Be Justified
A higher expense ratio isn't automatically a rip-off. Funds that do something genuinely harder — covered-call income strategies, certain active bond funds, narrow thematic exposures you can't get elsewhere — reasonably cost more than a plain index fund. The question isn't whether the fee is low in absolute terms; it's whether you're getting something for it that a cheap index fund can't provide.
Be skeptical, though, of 'closet indexers' — funds that charge active fees while hugging a benchmark they barely deviate from. You pay for stock-picking and get an expensive index fund. As a rule, keep the core of your portfolio in the cheapest broad funds (0.03-0.10%), and only pay up for a specific, deliberate reason — never by accident or inertia.
Important: Watch for load fees and 12b-1 fees on mutual funds, which sit on top of the expense ratio. Most low-cost index ETFs avoid these entirely — another reason broad ETFs tend to be the cheapest way to invest.
Frequently Asked Questions
What is a good expense ratio for an ETF?
For a broad index ETF, under about 0.10% is excellent, up to roughly 0.20% is acceptable, and over about 0.50% is a real drag that needs justifying. The cheapest broad-market funds charge just 0.03%, which is the benchmark to compare against. Specialized or active funds reasonably cost more, but core holdings should be cheap.
Is a 0.50% expense ratio too high?
For a plain index fund, yes — it's far above the 0.03% you'd pay for a comparable broad-market ETF, and that 0.47% annual gap compounds into a large sum over decades. For a specialized active or niche strategy that's genuinely hard to replicate, 0.50% can be reasonable. The test is whether the fund delivers something a cheap index fund can't.
How much does the expense ratio actually cost me?
It's an annual percentage of your balance, deducted automatically. At 0.03%, a $10,000 holding costs $3 a year; at 0.50%, it costs $50. The bigger issue is compounding: on a six-figure portfolio held for decades, the gap between a cheap and an expensive fund can add up to tens of thousands of dollars in lost growth, because the skimmed money never compounds.
Why are some ETFs so cheap at 0.03%?
Broad index ETFs simply track a benchmark by holding its stocks in proportion, which requires little active management or trading. Massive scale and intense competition among Vanguard, iShares, and others have driven fees on core funds down to about 0.03%. Active funds charge more because they pay managers and analysts and trade more — costs that, on average, haven't translated into better results.
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Alex Harrington
CFA Level II Candidate, Finance & Economics
Alex Harrington is an independent ETF researcher and personal finance writer with over 8 years of experience analyzing exchange-traded funds. A CFA Level II candidate with a background in economics, Alex has reviewed 800+ ETFs and helped thousands of beginners build their first investment portfolios through clear, jargon-free education.
This content is for educational purposes only and does not constitute financial advice. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.