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Expense Ratios Explained: What They Include, What They Don't, and What They Cost in Dollars

An expense ratio is a fund's annual operating cost as a percentage of assets. It's deducted quietly from returns. Here is how it works in dollars and the costs it leaves out.

Investing Article, 1 min read

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Education, not advice. This page explains how things generally work. It doesn't consider your situation and isn't a recommendation. See our full disclaimer.

Every mutual fund and ETF has an expense ratio: its annual operating costs expressed as a percentage of assets. You never get a bill. The cost is deducted from the fund's assets a little at a time, so the returns you see are already net of it.

What it costs in dollars

Expense ratio Annual cost per $10,000 invested Per $100,000
0.03% $3 $30
0.20% $20 $200
0.50% $50 $500
1.00% $100 $1,000
Annual cost per $10,000 invested
$0$20$40$60$80$100$30.03%$200.20%$500.50%$1001.00%
Simple arithmetic. Costs grow as the balance grows. Illustrative.
Show the numbers behind this chart
Annual cost
0.03%$3
0.20%$20
0.50%$50
1.00%$100

Over decades, the difference compounds; see what a 1% fee really costs.

What's included

  • Management fees paid to the fund's adviser.
  • Administrative, custody, legal, and accounting costs.
  • For some mutual funds, distribution (12b-1) fees used for marketing and sales.

What's not included

  • Trading costs inside the fund, from buying and selling securities.
  • Sales loads, which some mutual funds charge when you buy or sell.
  • Advisory or account fees charged by an adviser or platform.
  • Bid-ask spreads when you trade ETFs.

The expense ratio is a key cost, but not the only one. Fund turnover is a rough indicator of trading activity and hidden trading costs.

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Gross vs. net

Some funds show a gross expense ratio and a lower net ratio after a fee waiver. Waivers can expire. Check the prospectus for when.

Where to find it

The fund's fact sheet, prospectus, and most brokerage fund pages list the expense ratio. Workplace plans provide fee disclosures each year.

The takeaway

The expense ratio is the annual cost of owning a fund, deducted from returns. Convert it to dollars for your balance, remember it doesn't include trading costs or advisory fees, and compare it among funds that do the same job.

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