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.

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 |
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.

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.
Keep reading

Asset Allocation and Rebalancing: Keeping Your Risk Where You Set It
A 60/40 portfolio left alone through a few good stock years quietly becomes a 70/30 portfolio. Here is how drift happens, what rebalancing does and doesn't do, and the main ways people rebalance.
Guide, 4 min read
Bond Basics: Why Bond Prices Fall When Rates Rise, and What Duration Tells You
Bonds are often described as safe, yet bond funds can lose money. The reason is the seesaw between interest rates and prices. Here is how it works, with prices calculated for three maturities.
Guide, 5 min read
Dollar-Cost Averaging vs. Lump Sum: What the Math Actually Says
If you have a large sum to invest, should you put it in all at once or spread it out? We ran both approaches through three market paths to show who wins, when, and why.
Guide, 4 min read