Combine fund expenses and ongoing advisory or platform percentages.
With your fee
—
With index fund
—
Lost to fees
—
Assumes a constant annual return and fees charged on the full balance each year — the standard way expense ratios work. Real returns vary, but the relative gap between fee levels is robust.
Why 1% is not really 1%
A fee quoted as 1% per year sounds like you keep 99% of your money. That framing is what makes fees so easy to ignore — and so expensive. The fee is charged on your entire balance, every single year, and the money it takes is money that would otherwise have kept compounding for the rest of your investing life.
So the real cost is not the fee itself — it is the fee plus every future dollar of growth that fee would have earned. Over a few years the difference is minor. Over three or four decades it compounds into a gap that routinely reaches a quarter of the final balance at the 1% level, and more on larger portfolios or longer horizons.
That is why the calculator translates the gap into something concrete: the extra years your lower-fee balance could fund in retirement. Fees do not just shrink a number on a statement — they move your retirement date.
What each expense ratio actually costs
A single $100,000 invested for 30 years at a 7% gross return, no further contributions. The baseline is a 0.03% index fund; every row shows what a higher fee leaves you with, and what the gap is worth. "Years of retirement lost" converts the shortfall into years of spending at the 4% rule — the same figures the calculator above produces.
| Expense ratio | Ends at | Cost vs 0.03% | % of balance | Retirement lost |
|---|---|---|---|---|
| 0.03% index | $754,849 | — | — | — |
| 0.10% | $740,169 | $14,679 | 1.9% | ~0.5 yr |
| 0.20% | $719,677 | $35,172 | 4.7% | ~1.2 yr |
| 0.50% | $661,437 | $93,412 | 12.4% | ~3.1 yr |
| 1.00% | $574,349 | $180,500 | 23.9% | ~6.0 yr |
| 1.50% | $498,395 | $256,454 | 34.0% | ~8.5 yr |
| 2.00% | $432,194 | $322,654 | 42.7% | ~10.7 yr |
This is why the headline number misleads. A 1% fee is not 1% of your money — it is nearly a quarter of your 30-year balance, because you forfeit the fee and every dollar it would have compounded into. The drag scales with time and balance, so it bites hardest on exactly the long horizons FIRE depends on.
Key Considerations
- Expense ratios are only part of the cost. Some funds add sales loads, 12b-1 fees, or advisor wrap fees on top. Add every recurring percentage you pay into "your fee" for a true picture.
- A higher fee is only worth it if it delivers. Decades of data show most active funds fail to beat their low-cost index benchmark after fees. Pay more only for something you genuinely cannot get cheaply.
- The dollar drag scales with your balance. The same 1% costs far more on a $1M portfolio than a $50k one — high earners have the most to gain from cutting fees.
- This models fees only. It assumes both funds earn the same gross return, isolating the fee effect. In reality returns differ too.
Frequently Asked Questions
How much do investment fees really cost over time?+
Far more than the headline percentage, because fees compound. A 1% annual fee on a portfolio earning 7% can consume roughly a quarter of your final balance over 30 years — you lose the fee and all the growth that money would have earned.
What is a good expense ratio?+
Broad-market index funds commonly charge 0.03%–0.10% per year. Active funds often charge 0.5%–1%+. Anything above ~0.20% deserves scrutiny unless it delivers something you can't get more cheaply.
Is a 1% fee really that bad?+
Yes — it's charged on your whole balance every year and compounds. Versus a 0.05% index fund, over decades it can cost six figures on a large portfolio, enough to delay retirement. Try your own numbers above.
How many years of retirement does a 1% fee cost?+
On $100,000 at 7% for 30 years, a 1% fund instead of a 0.03% index fund ends about $180,500 lower. At a 4% withdrawal rate that is roughly six years of retirement spending — the fee moves your retirement date by years, not cents.
Do fees matter more early or late in my investing life?+
Both. A fee charged early has the longest runway to compound against you; a fee charged late is taken from the largest balance. The drag is worst on the long horizons and big balances that early retirement relies on, which is why trimming the expense ratio is one of the few guaranteed, risk-free gains an investor can make.
Related Tools
Decision guide
Measure fee drag in dollars and lost time
An expense ratio reduces the return applied to the full balance every year. The direct fee is only part of the loss; every dollar paid also loses all future growth it could have earned.
Keep performance equal so the comparison isolates cost.
Fee gaps look small early and grow with the balance and lost compounding.
What this model includes
- Net growth after annual expense ratios
- Dollar gap versus a lower-cost comparison
What to add outside the model
- Trading spreads, tax drag, and sales loads
- Differences in risk, strategy, or gross performance
Calculation standard: Formula details, source policy, tests, and limitations are documented in the FinancialDepth methodology. Reviewed September 19, 2026.