Expense Ratio
First Seen: August 2010 · Concept: Investment fund fees · Status: Critical cost metric
Overview
Expense ratio is annual fee charged by mutual funds/ETFs, expressed as percentage of assets under management. Covers fund operations (management, administration, marketing).
Example: 0.50% expense ratio on $10,000 investment = $50/year in fees
Historical Context
1990s-2000s: Average expense ratios 1-2% (actively managed funds)
2010+: Index fund fee war (Vanguard, Fidelity, Schwab race to zero)
2023: Many index funds charge 0.03-0.10%
Impact over time: $10K invested for 30 years at 8% returns:
- 0% fee: $100,627
- 0.50% fee: $83,423 (-$17,204)
- 1% fee: $69,761 (-$30,866)
- 2% fee: $49,725 (-$50,902)
Bogleheads Philosophy
John Bogle (Vanguard founder): “In investing, you get what you don’t pay for.”
Core principle: Every dollar paid in fees is a dollar not compounding. Over decades, fees destroy wealth.
Fee War (2018-2019)
Fidelity ZERO funds (2018): First 0.00% expense ratio funds (FZROX, FZILX)
Vanguard response: Lowered VTSAX to 0.04%
Schwab: Lowered SWTSX to 0.03%
Winner: Investors save billions annually
What’s Included
Expense ratio covers:
- Portfolio management
- Administrative costs
- 12b-1 fees (marketing, up to 0.25%)
- Legal/compliance
- Shareholder reporting
NOT included:
- Trading commissions (paid separately, now $0 at most brokers)
- Sales loads (front-end/back-end charges, avoid these)
- Account fees (custodian fees, now rare)
Red Flags
Above 0.50%: Question why (most index funds <0.20%)
Above 1%: Actively managed funds (rarely beat index after fees)
Above 2%: Hedge fund-level fees (rarely accessible to retail investors)
FIRE Community Standard
Acceptable expense ratios:
- Index funds: 0.03-0.15%
- International funds: 0.10-0.20% (higher due to complexity)
- Bond funds: 0.05-0.15%
r/Bogleheads rule: Minimize expense ratios religiously
Sources
- Vanguard: “The case for indexing” (fee studies)
- Morningstar fund cost studies
- r/Bogleheads expense ratio discussions