Week 19 Day 5: Your Expense Ratio Is Your Most Controllable Cost

The expense ratio is the annual fee a fund charges, expressed as a percentage. VOO (S&P 500 index) charges 0.03%. The average active fund charges 0.67%. On a $500,000 portfolio, that is $150/year versus $3,350/year. Over 30 years at 10% returns, the fee difference costs you about $350,000. That is a house. Paid in fees. For worse performance.

Expense ratio benchmarks: Excellent (index funds): 0.03-0.10%. Good: 0.10-0.20%. Acceptable: 0.20-0.50%. Expensive: 0.50-1.00%. Avoid: anything above 1.00%. The cheapest funds available (as of 2024): Fidelity ZERO funds (FZROX, FZILX): literally 0.00%. No expense ratio at all. The catch: they use proprietary indices and are only available at Fidelity. Schwab: SWTSX (total market, 0.03%), SCHB (broad market, 0.03%), SCHX (large cap, 0.03%). Vanguard: VOO (S&P 500, 0.03%), VTI (total market, 0.03%), VXUS (international, 0.07%). iShares: IVV (S&P 500, 0.03%), ITOT (total market, 0.03%). There is effectively no reason to pay more than 0.10% for any core portfolio holding. The fund companies have engaged in a 'fee war' that has driven costs to near zero for investors. This is one of the greatest consumer benefits in financial history.

The economics of the fee war are explained by Hortacsu and Syverson (2004), who found substantial fee dispersion in U.S. index funds despite nearly identical products. They attributed this to search costs and investor inattention. As financial literacy has increased and platforms have made fee comparison easier, the highest-cost index funds have lost assets while the cheapest have gained trillions. The equilibrium is approaching zero for plain-vanilla index funds (Fidelity hit 0.00%). Fund companies now make money through securities lending (lending their holdings to short sellers, earning 0.01-0.05% that offsets fund costs), cash management (sweep accounts), and cross-selling other products. The total cost of investing extends beyond the expense ratio: (1) trading costs (bid-ask spreads, not included in ER), typically 0.01-0.03% for large ETFs, (2) tracking error (deviation from the benchmark, ideally near zero), (3) securities lending income (reduces net cost, sometimes reported separately), (4) tax efficiency (capital gains distributions, which index funds minimize through in-kind redemptions). Vanguard's ETF structure is uniquely tax-efficient because it uses a patented share class structure (patent expired 2023) that allows ETF redemptions to purge embedded capital gains from the fund -- a structural advantage no other fund company fully replicates yet.