Investment Fee Calculator
A 1% fee sounds small. Over a lifetime of investing it can quietly cost you six figures. See what your fees really add up to.
Your investment
Enter your plan and the fees you pay
What you're investing today.
What you add every month.
Longer horizons make fees hurt far more.
The S&P 500 has averaged ~10% before inflation.
Index funds run ~0.03–0.1%. Advisors often charge ~1%.
What fees cost you
The same plan, with and without fees
Lost to fees
$128,667
Balance with fees
$562,483
Balance without fees
$691,150
Share of your gains lost to fees
25.7%
Why a 1% fee is a big deal
How this investment fee calculator works
$10,000 invested with $500 monthly contributions over 30 years at 7% grows to about $691,000 fee-free, but a 1% annual fee cuts that to roughly $562,000. That is a $128,000 cost for a fee that looked small every single year it was charged.
Fees look tiny next to your returns, but they are charged on your whole balance every year, and the money they take can never compound for you again. Enter your balance, contribution, return, and time horizon, and this calculator shows the gap between growing with and without the fee.
Why a small percentage costs so much
A 1% fee sounds like almost nothing next to a 7% return. The problem is that the fee is charged on the whole balance every single year, including the growth from previous years, so it compounds against you the same way your returns compound for you. Over a few decades, a 1% annual fee often eats a quarter or more of the gains you would otherwise keep, and that share grows larger the longer the money is invested.
This is easy to miss because a fee never shows up as a separate line item pulling money out of the account. It just quietly lowers the return you see, which makes it feel like ordinary market performance instead of a cost you are paying every year.
Where the fee actually comes from
The expense ratio on a mutual fund or ETF, the assets-under-management fee an advisor charges, and account or trading fees all stack on top of each other, and most people only ever check one of them. Look up the actual expense ratio on anything you hold. It is usually listed as a small percentage in the fund's summary, and it is worth finding even when the fund's website does not make it easy.
Low-cost index funds charge a fraction of what actively managed funds and many advisors do, for returns that are frequently as good or better over long periods. Switching from a 1% fee to a 0.05% fee on the same portfolio is one of the few changes in investing that costs nothing to make and pays off for as long as the money stays invested.
How this is calculated
It shows how much a yearly fee quietly costs you over time by dragging down your return.
It grows your investment twice: once at the full return, and once at the return minus the fee. Then it shows the gap. That gap is what the fee costs, including all the growth the fee money would have earned.
What it assumes
- The return and fee percentage stay constant.
- The fee is charged on the whole balance each year.
- Taxes and inflation aren't included.
Keep learning
Frequently asked questions
What's a normal expense ratio to expect?
Broad index funds and ETFs commonly charge 0.03-0.20% a year. Actively managed mutual funds often charge 0.5-1.5%, and some advisor-sold products run even higher. Lower is generally better when performance is otherwise similar.
Is a 1% fee really that big of a deal?
Yes, because it's charged on your entire balance every single year, not just on gains, and every dollar taken as a fee can never compound for you again. Over multiple decades a 1% fee often consumes a quarter or more of what the investment would otherwise be worth.
How do I find out what fees I'm actually paying?
Check the fund's expense ratio, listed in its prospectus or fact sheet, usually easy to find on your brokerage's fund page, plus any separate advisory or account fees charged on top by whoever manages the account.
Results are estimates for educational purposes only. They assume a constant return and a fee charged evenly on your balance each year; real returns and fee structures vary. This is not financial advice.