Expense Ratio

An expense ratio is the annual fee charged by a mutual fund or ETF to cover operating expenses, expressed as a percentage of assets under management. Lower expense ratios mean more of your money stays invested.

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Exam Tip

Lower expense ratio = more money working for you. Index funds typically have lowest expense ratios.

What is an Expense Ratio?

The expense ratio is the annual percentage of your investment that goes toward fund operating costs. It's deducted from fund assets, reducing your returns.

What's Included

Cost TypeExamples
Management FeesPortfolio manager compensation
AdministrativeRecord keeping, statements
12b-1 FeesMarketing and distribution
OtherLegal, accounting, custodial

Typical Expense Ratios

Fund TypeTypical Range
Index ETF0.03% - 0.20%
Index Mutual Fund0.10% - 0.50%
Actively Managed0.50% - 1.50%
Target Date0.30% - 0.75%

Impact on Returns

Initial InvestmentExpense RatioValue After 30 Years (7% return)
$100,0000.10%$739,000
$100,0000.50%$662,000
$100,0001.00%$574,000

Why Expense Ratios Matter

  • Lower fees = more money compounding
  • Active funds rarely beat indexes after fees
  • Small differences compound significantly over time
  • Compare similar funds by expense ratio

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