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  1. Home
  2. Glossary
  3. Expense Ratio
GlossaryETFs & Index Funds

Expense Ratio

The annual fee a fund charges, expressed as a percentage of the amount invested. Lower expense ratios leave more of the return with the investor — a key reason low-cost index funds are popular.

Appears in these guides

  • Expense Ratios & Fund CostsETFs & Index Funds
  • Bond ETFs: Income, Duration and Market PricesETFs & Index Funds
  • CommissionsBrokers & Accounts
  • ETFs vs Mutual FundsETFs & Index Funds
  • IWM: Small-Cap Exposure and Index ReconstitutionETFs & Index Funds
  • Leveraged ETFs: Daily Targets and Multi-Day CompoundingETFs & Index Funds

Related terms

Accumulating FundActive ManagementBenchmarkDistributing FundETFIndexIndex FundMutual FundNAVPassive Investing

Related lessons

advancedETFs & Index Funds

Inverse ETFs: Negative Exposure, Daily Targets and Hedge Limits

Separate a daily inverse fund from a fixed short sale, calculate negative-target compounding and examine why a simple offset need not remain matched over time.

intermediateETFs & Index Funds

QQQ: Nasdaq-100 Eligibility, Weighting and Overlap

Read QQQ through its benchmark rules, current fund structure and underlying exposures, then calculate weighted contributions and overlap without treating a ticker as a forecast.

Ironclad Research provides educational content only. Nothing on this platform is financial advice, a recommendation, or an offer to buy or sell any security. Always do your own research and consider professional advice before making financial decisions.