● The silent wealth destroyer

Investment Fee Impact Calculator

A 1% annual management fee sounds small — but it can cost you 20–25% of your final balance over 30 years. See the real numbers.

Investment fees compound against you just as returns compound for you. On $100,000 invested for 30 years at 8% gross: a 0.1% TER (index ETF) leaves $996k; a 1% active fund fee leaves $761k; a 2% fee leaves $574k. The difference between a cheap ETF and an expensive fund can exceed $420,000.

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Fee Impact Calculator

Principal · Monthly contribution · Gross return · Fund fee

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Your investment

Initial investment

Monthly contribution

Investment horizon

years

Gross annual return (before fees)

Low-fee fund (e.g. index ETF)

% TER

High-fee fund (e.g. active fund)

% TER

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Results

Without any fee (theoretical)

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With low-fee fund (0.1% TER)

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With high-fee fund (1.5% TER)

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Wealth lost to high fees

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How it's calculated

How fees compound against you

A management fee is deducted from your effective annual return. The compounding effect means you lose not just the fee itself — you lose all future growth on the fee amount too.

Net return = Gross return − Fund fee Final value = P × (1 + r_net/12)^(12×t) + PMT × [(1 + r_net/12)^(12×t) − 1] / (r_net/12) Wealth destroyed by fees = FV(low fee) − FV(high fee) Example: $50k + $500/mo, 8% gross, 30yr Low fee (0.1%): net 7.9% → $809,174 High fee (1.5%): net 6.5% → $613,822 Difference: $195,352 (24% of low-fee balance)

1
Final value with no fees
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2
Final value with low fee
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3
Final value with high fee
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4
Cost of the higher fee
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TER (Total Expense Ratio): Annual percentage of fund assets charged for management, admin, and operating costs. Automatically deducted from NAV — never seen as a line item.
Index fund / ETF: A fund tracking a market index (e.g. S&P 500). No active management means very low fees — typically 0.03%–0.20%.
Active fund: A fund where managers pick stocks trying to beat the index. Higher fees (0.5%–2%+), but most active funds underperform their benchmark net of fees over long periods.

🔢 Worked example

Investing $50,000 plus $500/month at 8% for 30 years: a 0.1% fund grows to about $1.26M, but a 1% fund reaches about $1.02M — the higher fee quietly costs around $240,000.

Disclaimer: this calculator uses constant rate assumptions. Actual fund returns vary year to year. Past performance does not guarantee future results. Always confirm with an official source before deciding.

Frequently asked questions

How much does a 1% fee cost over 30 years?

On $100,000 at 8% gross: a 1% fee reduces your net return to 7%, leaving $761,225 vs $1,006,266 without the fee — a difference of $245,041, or 24% of the final balance. The fee cost is amplified by compounding over long periods.

What TER should I look for in an index fund?

For broad market index ETFs: under 0.20% is excellent. Many Vanguard, iShares, and SPDR ETFs charge 0.03%–0.10%. These fees have fallen dramatically over the past 20 years due to competition. Always check the fund's KIID or prospectus for the exact TER.

Do higher fees mean better performance?

No — research consistently shows the opposite. Morningstar's "fee study" finds that expense ratio is the single strongest predictor of fund performance: the cheapest quintile of funds consistently outperforms the most expensive quintile in every major asset class. Fees are certain; outperformance is not.

Where do I find a fund's TER?

In the fund's KIID (Key Investor Information Document) for EU-domiciled funds, or the Prospectus/Summary Prospectus for US funds. Also shown on fund-comparison sites (Morningstar, JustETf for EU, ETF.com for US).

What is a TER (Total Expense Ratio)?

The Total Expense Ratio (TER) is the annual percentage of fund assets charged to cover management, administration, and other operating costs. For passive index ETFs, TER is typically 0.03%–0.20%. For actively managed funds, 0.5%–2%+. TER is automatically deducted from the fund's NAV — you never see it as a separate charge, which makes it easy to overlook.

What is a good fund fee (TER) to aim for?

For broad market index ETFs: under 0.20% TER (Vanguard, iShares, SPDR offer many under 0.10%). For active funds: under 0.75% if the manager consistently outperforms (rare). Many financial educators, including Vanguard founder Jack Bogle, recommend minimizing fees as the most reliable path to better returns.

Are my results saved? Do I need an account?

No account or sign-up needed. Every calculation is saved automatically in your own browser, and you can also pin a result with the save button. Nothing is sent to any server: the data stays on your device and can be erased at any time with the clear button.

How do I track my progress over time?

From the fourth entry onward a “View comparison chart” button appears, opening a line chart with every entry in time order plus an indicator panel: total change, average per entry, lowest and highest value and the period covered. You can also export the history as CSV.

Can I use this as a hedge fund fee calculator?

Partly, and it is worth knowing where the limit is. Enter the fund's annual management fee on the high-fee side and an index ETF on the low-fee side: on $50,000 plus $500/month at 8% gross over 30 years, a 2% management fee leaves $803,386.28 against $1,260,956.01 at 0.10% — a gap of $457,569.72. What this calculator does not model is a performance fee charged on gains, which many hedge funds add on top of the management fee. If your fund charges one, read the figure above as the floor of what fees cost you, not the total.

About this calculator

This calculator shows the true long-term cost of investment fees. You enter an amount invested, a time horizon, an expected gross return, and one or more expense ratios (TER), and it compares the final balances side by side. The point is to make visible what a percentage on a fee sheet actually costs you in dollars over decades.

Fees compound against you the same way returns compound for you: a seemingly small annual charge quietly removes a large share of your final wealth. Read the gap between a low-cost index fund and a higher-fee active fund as money that left your portfolio for someone else’s — and use it to judge whether a fund’s higher cost is justified by what you get in return.

By Vinicius Fonseca · Reviewed against official sources · Updated Jul 2026 · How we calculate →