The Definition of Expense Ratio


What Is an Expense Ratio (ER)?

An expense ratio (ER), also sometimes known as the management expense ratio (MER), measures how much of a fund’s assets are used for administrative and other operating expenses. An expense ratio is determined by dividing a fund’s operating expenses by the average dollar value of its assets under management (AUM). Operating expenses reduce the fund’s assets, thereby reducing the return to investors.

Key Takeaways

  • The expense ratio (ER) is a measure of mutual fund operating costs relative to assets.
  • Investors pay attention to the expense ratio to determine if a fund is an appropriate investment for them after fees are considered.
  • Expense ratios may also come in variations, including gross expense ratio, net expense ratio, and after reimbursement expense ratio.

Formula for the Expense Ratio




ER

=

Total Fund Costs

Total Fund Assets

begin{aligned} &text{ER} = frac{ text{Total Fund Costs} }{ text{Total Fund Assets} } \ end{aligned}

ER=Total Fund AssetsTotal Fund Costs

What the Expense Ratio Can Tell You

Operating expenses vary according to the fund or stock; however, the expenses within the fund remain relatively stable. For example, a fund with low expenses will generally continue to have low expenses. The largest component of operating expenses is the fee paid to a fund’s investment manager or advisor.

Other costs include recordkeeping, custodial services, taxes, legal expenses, and accounting and auditing fees. Expenses that are charged by the fund are reflected in the fund’s daily net asset value (NAV) and do not appear as a distinct charge to shareholders.

Expense ratios can be modified in several ways. The expense ratio is most often concerned with total expenses, but sometimes, people want to understand gross expenses versus net.

Components of an Expense Ratio

Most expenses within a fund are variable; however, the variable expenses are fixed within the fund. For example, a fee consuming 0.5% of the fund’s assets will always consume 0.5% of the assets regardless of how it varies.

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In addition to the management fees associated with a fund, some funds have an advertising and promotion expense referred to as a 12b-1 fee, which is included in operating expenses. Notably, 12b-1 fees within a fund cannot exceed 1% (0.75% allocated to distribution and 0.25% allocated to shareholder servicing) according to FINRA rules.

A fund’s trading activity—the buying and selling of portfolio securities—is not included in the calculation of the expense ratio. Costs not included in operating expenses are loads, contingent deferred sales charges (CDSC), and redemption fees, which, if applicable, are paid directly by fund investors.

Index Funds vs. Actively Managed Funds

The expense ratio of an index fund and an actively managed fund often differ significantly. Index funds, which are passively managed funds, typically carry very low expense ratios. The managers of these funds are generally replicating a given index. The associated management fees are thus lower due to the lack of active management, as with the funds they mirror.

Actively managed funds employ teams of research analysts examining companies as potential investments. Those additional costs are passed on to shareholders in the form of higher expense ratios.

The Vanguard S&P 500 ETF, an index fund that replicates the Standard & Poor’s (S&P) 500 Index, has one of the lowest expense ratios in the industry at 0.03% annually. At this level, investors are charged just $3 per year for every $10,000 invested. The Fidelity Contrafund is one of the largest actively managed funds in the marketplace with an expense ratio of 0.86%, or $86 per $10,000.

Examples of Expense Ratios

In general, passively managed funds, such as index funds, will typically have lower expense ratios than actively managed funds. Below are two examples—one of each.

The AB Large Cap Growth Fund

The AB Large Cap Growth Fund is an actively managed fund with a net expense ratio of 0.61%. The fund currently has a fee waiver and expense reimbursement of 0.01%. Management fees for the fund are 0.50%. The fund invests primarily in large-cap U.S. stocks with high growth potential. It typically includes 50 to 70 holdings.

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The T. Rowe Price Equity Index 500 Fund

The T. Rowe Price Equity Index 500 Fund is a passive fund. It seeks to replicate the S&P 500 Index by investing the majority of its assets into all of the stocks in the S&P 500. Its gross and net expense ratio is 0.19%. It has a management fee of 0.06%.

The Difference Between the Expense Ratio and Management Fees

Mutual funds charge management fees to cover their operating costs, such as the cost of hiring and retaining investment advisors who manage funds’ investment portfolios and any other management fees payable not included in the other expenses category. Management fees are commonly referred to as maintenance fees.

A mutual fund incurs many operating fees associated with running a fund other than the costs to buy and sell securities and paying the investment team to make the buy/sell decisions. These other operating fees include marketing, legal, auditing, customer service, office supplies, filing costs, and other administrative costs. 

While these fees are not directly involved with making the investment decisions, they are required to ensure the mutual fund is run correctly and within the Securities and Exchange Commission’s (SECs) requirements.

The management fee encompasses all direct expenses incurred in managing the investments such as hiring the portfolio manager and investment team. The cost of hiring managers is the largest component of management fees; it can range between 0.5% and 1% of the fund’s assets under management, or AUM.

Even though this percentage seems small, the absolute amount is in millions of U.S. dollars for a mutual fund with $1 billion of AUM. Depending on the reputation of management, highly skilled investment advisors can command fees that push a fund’s overall expense ratio quite high.

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Notably, the cost of buying or selling any security for the fund is not included in the management fee. Rather, these are transaction costs and are expressed as the trading expense ratio in the prospectus. Together, the operating fees and management fees make up the expense ratio.

Expense Ratio FAQs

What Does Expense Ratio Mean?

The expense ratio refers to how much of a fund’s assets are used towards administrative and other operating expenses. Because an expense ratio reduces a fund’s assets it reduces the returns investors receive.

What Is an Example of an Expense Ratio?

An example of an expense ratio would be the 0.21% that the T. Rowe Price Equity Index 500 Fund charges. It means that 0.21% of its assets are used towards paying administrative and operating costs, reducing an investor’s returns by that amount.

Why Is Expense Ratio Important?

An expense ratio is important because it lets an investor know how much they are paying in costs by investing in a specific fund and how much their returns will be reduced by. The lower the expense ratio the better because it means that an investor is receiving higher returns on their invested capital.

How Is Expense Ratio Calculated?

The expense ratio is calculated by dividing total fund costs by total fund assets.

What Is a Good Expense Ratio for a Mutual Fund?

Mutual funds that invest in large companies should not have an expense ratio above 1% while funds that invest in smaller companies should not have an expense ratio above 1.25%. There are funds with expense ratios higher than this, and they can either be viewed as expensive funds or funds that provide a special service justifying their high cost.


View more information: https://www.investopedia.com/terms/e/expenseratio.asp

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