Investment Fee Calculator

Use the Investment Fee Calculator

Your results

Ending balance before fees: $0.00
Ending balance after fees: $0.00
Total cost of fees: $0.00
Fee drag percentage: 0.00%

How this calculator works

What it does: Estimate how annual investment fees can reduce a growing portfolio with regular monthly contributions.
Inputs used: The estimate uses starting investment, monthly contribution, annual fee (%), expected annual return (%), and number of years.
Calculation approach: The calculator applies the relationships defined for the investment fee calculator to those inputs and updates ending balance before fees, ending balance after fees, total cost of fees, and fee drag percentage.
How to read the result: Treat the result as a scenario based on the values entered. Compare a few reasonable inputs and consider costs, taxes, timing, or risks that the calculator does not include.

How to Use This Calculator

Enter Starting investment and Monthly contribution using values that match the scenario you want to evaluate.
Enter Annual fee (%) and Expected annual return (%) using values that match the scenario you want to evaluate.
Enter Number of years using values that match the scenario you want to evaluate.
Review the assumptions for the investment fee calculator, especially rates, time periods, and optional amounts.
Select Calculate to update the results, then adjust one input at a time to compare scenarios.

Understanding the Results

Ending balance before fees: The estimated value at the end of the selected period after applying the entered contributions, rates, and timing assumptions.
Ending balance after fees: The estimated value at the end of the selected period after applying the entered contributions, rates, and timing assumptions.
Total cost of fees: The estimated cost created by the entered rate over the selected period.
Fee drag percentage: The estimated cost created by the entered rate over the selected period.

Common Mistakes

Treating an assumed return, growth rate, inflation rate, or yield as guaranteed.
Leaving out taxes, fees, inflation, or timing differences that can affect real-world results.
Mixing monthly and annual figures or entering percentages in the wrong units.
Relying on one projection instead of comparing a range of reasonable assumptions.

Worked Example

Example inputs

Starting investment: $100,000
Monthly contribution: $500
Annual fee (%): 0.5%
Expected annual return (%): 7%
Number of years: 30

Example results

Ending balance before fees: $1,421,635.25
Ending balance after fees: $1,252,268.84
Total cost of fees: $169,366.40
Fee drag percentage: 11.91%

With these illustrative inputs, the ending balance before fees is $1,421,635.25. The result shows how the example assumptions interact and is not a prediction of future performance.

Frequently asked questions

What is the total cost of investment fees?

The total cost includes both fees deducted from the portfolio and the compound growth those deducted dollars could have earned.

How are monthly contributions handled?

The calculator assumes contributions are made at the end of each month and grow at a monthly-compounded return.

What does fee drag percentage mean?

Fee drag is the percentage of the projected no-fee ending balance lost because of annual investment fees.

Can a small annual fee make a large difference?

Yes. Even a modest annual fee can create a meaningful long-term difference because its effect compounds over many years.

Does this calculator include taxes or trading costs?

No. It assumes constant returns, fees, and contributions and does not include taxes, trading costs, withdrawals, or changing market performance.

What does the Investment Fee Calculator calculate?

Estimate how annual investment fees can reduce a growing portfolio with regular monthly contributions. The result is based only on the inputs and assumptions shown on the page.

How should I interpret the total cost of fees from the Investment Fee Calculator?

Use it as an estimate for the scenario entered, not as a guarantee or personal recommendation. Test changes to starting investment, monthly contribution, and annual fee (%) to see which assumptions have the greatest effect.