Fund Fee Drag Calculator
Example: Starting balance: 25000 $ · Monthly contribution: 500 $ · Gross annual return (before fees): 7 % · Low-cost fund expense ratio: 0.04 % · Higher-cost fund expense ratio: 1 % · Investment horizon: 30 years
| Lifetime fee drag — dollars lost | $137,774 |
| Low-cost fund final balance | $768,618 |
| High-cost fund final balance | $630,844 |
| Fee drag as % of low-cost balance | 17.92% |
Worked example
Starting with $25,000 and adding $500 a month for 30 years, a 7% gross return at a 0.04% expense ratio grows to roughly $596,000. The same portfolio in a 1% expense ratio fund grows to only $474,000 — the fee drag silently destroyed $122,000, nearly four years of your contributions.
Frequently asked questions
Why do small fee differences compound so dramatically?
Because the fee reduces your effective return every year, and a slightly smaller base compounds to a dramatically smaller number over 30 years. A 0.96% annual difference in return, applied to an ever-growing balance for three decades, produces a gap that accelerates in dollar terms each year.
What is a reasonable expense ratio for a mutual fund?
Index funds from Vanguard, Fidelity, and Schwab typically charge 0.01%–0.20%. Actively managed mutual funds often charge 0.5%–1.5%. The SEC publishes mutual fund cost disclosures in every fund's prospectus and on Investor.gov — always check the net expense ratio in the fund's most recent annual report.
Are there other costs beyond the expense ratio?
Yes — trading commissions (now rare at major brokers), sales loads (front-end or back-end charges on some mutual funds), and transaction fees can add to total cost. The expense ratio is the most persistent, because it is charged every year regardless of performance. Load funds are largely obsolete, but confirm a fund has no load before buying.