A seemingly small 1% annual fee can cost you $183,000 over 30 years. Here\'s the math.
An expense ratio is the annual fee a fund charges to manage your money. It's expressed as a percentage of your total investment, automatically deducted — you never write a check. But it silently compounds against you every single year.
For index funds, expense ratios are tiny: Vanguard's VOO charges 0.03% per year. On a $10,000 investment, that's $3 annually. Compare that to the average actively managed U.S. fund, which charges around 1.0%–1.2% — that's $100–$120 per year on the same $10,000.
The danger of expense ratios is that they don't just cost you the fee — they cost you the compounded returns on that fee, year after year for decades.
You can find any fund's expense ratio on Morningstar.com, the fund provider's official website, or in the fund's prospectus. Always verify before investing. For any given index, there will be multiple funds tracking it — always choose the one with the lowest expense ratio, all else being equal.