Mutual Fund Calculator
See how expense ratios and load fees quietly eat into fund returns over decades.
Inputs
The annual management fee deducted from fund assets.
Upfront sales charge deducted before investing.
Deferred sales charge applied when you sell.
Net Balance (after fees)
$374,628.94
Gross Balance (no-fee benchmark)
$417,680.28
Total Fee Drag
$43,051.34
The compounded wealth lost to fees.
Fee Drag as % of Gross
10.31%
Total Amount Invested
$145,000.00
Net Annual Return (%)
7.2500%
Step by step
Amount invested after front-end load
$25,000.00 × (1 − 0%)
= $25,000.00
No front-end load
Net annual return after expense ratio
8% − 0.75%
= 7.2500%
Gross balance (no fees benchmark)
= $417,680.28
Net balance after all fees
= $374,628.94
Total fee drag
$417,680.28 − $374,628.94
= $43,051.34
10.31% of gross balance consumed by fees
Gross vs. net balance comparison
| Year | Gross Balance | Net Balance |
|---|---|---|
| 1 | $33,299.95 | $33,077.40 |
| 2 | $42,288.79 | $41,760.27 |
| 3 | $52,023.71 | $51,094.00 |
| 4 | $62,566.61 | $61,127.36 |
| 5 | $73,984.57 | $71,912.81 |
| 6 | $86,350.22 | $83,506.72 |
| 7 | $99,742.21 | $95,969.68 |
| 8 | $114,245.72 | $109,366.85 |
| 9 | $129,953.02 | $123,768.25 |
| 10 | $146,964.02 | $139,249.16 |
How it works
Mutual fund fees compound against you the same way returns compound for you. A 1% expense ratio means the fund needs to earn 1% more than an index fund just to break even — and this gap widens every year. Front-end loads reduce your invested capital on day one; back-end loads (contingent deferred sales charges) reduce what you receive when you sell. Index funds and ETFs typically have expense ratios under 0.10%, versus 0.5–1.5% for actively managed funds.
Formulas
Net return after expense ratio
Net return = Gross return − Expense ratio
- r_gross
- Expected gross annual return
- ER
- Expense ratio (annual %)
Invested amount after front-end load
Net invested = Initial investment × (1 − Front-end load)
- I
- Initial investment
- L_f
- Front-end load rate (decimal)
Frequently Asked Questions
What is an expense ratio?
An expense ratio is the annual cost of owning a fund, expressed as a percentage of assets under management. A 0.75% ratio means the fund charges $7.50 per year for every $1,000 invested. It's deducted directly from fund assets, so the NAV you see already reflects it — but its compounding impact on your long-term wealth is enormous.
What is a front-end load?
A front-end load (Class A shares) is a sales commission taken upfront. If you invest $10,000 in a fund with a 5.75% load, only $9,425 actually gets invested. The broker receives the rest. Many funds offer load waivers at higher investment amounts.
Are no-load funds always better?
No-load funds have no direct sales commissions, but may still carry significant expense ratios. An actively managed no-load fund at 1.2% can still underperform an index fund at 0.03%. For long-term investors, minimizing the expense ratio matters far more than avoiding loads.
How do I find a fund's expense ratio?
It's disclosed in the fund's prospectus and on fund screener sites. It appears as a percentage in the 'Fees & Expenses' section. Morningstar, ETF.com and the fund company's own website all list it prominently.