Most people own funds, not individual stocks, through a 401(k), an IRA, or a brokerage account. Yet many people couldn't tell you what their fund costs. This is Part 10 of our Read the Numbers series, and it applies the same "read the document" habit to funds. The expense ratio comes first, because it's the one number you can count on paying every year.

Fact sheet versus prospectus

A fund fact sheet is a short summary the fund company publishes. The legal document is the prospectus, and the SEC's investor guide, How to Read a Mutual Fund Prospectus, points to two sections that matter most: the fee table and the performance section. A fact sheet typically repeats those same figures, so knowing what they mean lets you read either.

The fee table

According to the SEC guide, the fee table has three parts:

Table: what the expense ratio costs on $10,000 a year (hypothetical funds)
FundExpense ratioAnnual cost per $10,000
Low-cost index fund0.04%$4
Typical actively managed fund0.75%$75

That's a $71 difference per $10,000 each year, and it keeps compounding. The SEC's investor bulletin, How Fees and Expenses Affect Your Investment Portfolio, makes the point directly: over time, even small ongoing fees have a big impact on your portfolio.

The same two funds, $100,000 over 30 years
Index fund at 0.04% (7% gross return)about $752,700
Active fund at 0.75% (same 7% gross return)about $616,400
Difference from fees aloneabout $136,000
Hypothetical, from our guide Index vs. Active. Assumes identical gross returns before fees and no further contributions. Real fund returns will differ.

The performance section

The SEC guide describes three parts of the performance section: a bar chart showing the fund's historic performance and how consistent its returns have been, a table comparing the fund with a broad market index, and an indicator of its best and worst calendar quarters to show how volatile it has been.

A five-line checklist

None of this requires a finance background. It requires opening the document, which most people never do. If you understand the fee table and the performance table, you understand most of what a fund fact sheet is trying to tell you.

Common questions

What is an expense ratio?

The expense ratio is the percentage of a fund's net assets used each year to pay its fees and expenses. It's deducted from the fund's assets automatically, so you don't receive a bill, but it reduces your returns every year you own the fund.

Where do I find a fund's expense ratio?

In the fee table of the fund's prospectus, listed as annual fund operating expenses, and usually on the fund's fact sheet and on its page on your brokerage site.

What's the difference between a fact sheet and a prospectus?

A fact sheet is a short summary of key facts such as fees, holdings, and performance. The prospectus is the full legal document with complete detail, including the fee table and performance section the SEC recommends reading.

This article is for informational purposes only and does not constitute investment advice. The company and figures in the examples are hypothetical and exist only to illustrate the concepts. Financial ratios vary meaningfully by industry and should not be used in isolation to evaluate a company; consult a licensed financial advisor before making investment decisions.