Practical guide
Understanding investment fee impact — sensitivity table
Everyday editorial team · GEOINNOVATION CO., LTD · Published · Updated
What this calculation is for
Investment fees have both a direct annual cost and a long-term compounding effect. Compare options under the same return and contribution assumptions before attributing a balance difference to performance.
How the method works
Two projections receive identical starting money and deposits but apply different annual proportional fee rates. The ending-balance difference represents modeled fee drag, not a guaranteed saving. The displayed model uses: Grow the same contribution stream twice with different annual fee rates and compare ending balances.
A worked example
For an illustrative investment fee impact scenario, use Starting portfolio: 50000 $; Monthly contribution: 400 $; Annual gross return assumption: 7 %; Annual fee for option A: 0.25 %; Annual fee for option B: 1 %; Investment horizon: 20 years. The modeled estimated fee drag is $42,776.05. These are example assumptions, not current prices, official benefit amounts or personalized advice.
Assumptions and real-world differences
Actual fund expenses, adviser charges, transaction costs and taxes can be assessed differently. Constant returns conceal volatility, and lower fees do not prove that two investment strategies carry equal risk. No taxes, tracking error, trading costs or change in returns are modeled.
Reading the starting portfolio sensitivity table
The tool evaluates the same model across a range of starting portfolio values while holding other assumptions constant. Choose a realistic low value, high value and number of points. Each row reports the same headline measure; the table is a set of conditional calculations, not a probability distribution or a forecast. Input-step rounding can make nearby rows equal.
Reproduce this tool’s example
These fixed example inputs are independent of edits you make above. Enter them in this tool to reproduce the result, then replace them with your own assumptions.
- Minimum starting portfolio
- 25,000 $
- Maximum starting portfolio
- 75,000 $
- Number of comparison points
- 5 points
- Monthly contribution
- 400 $
- Annual gross return assumption
- 7 %
- Annual fee for option A
- 0.25 %
- Annual fee for option B
- 1 %
- Investment horizon
- 20 years
Sensitivity analysis: 5 comparison points
Starting portfolio ranges from $25,000 to $75,000.
- Starting portfolio: $25,000: $29,883.92
- Starting portfolio: $37,500: $36,329.99
- Starting portfolio: $50,000: $42,776.05
Frequently asked questions
- Should a 1% fee be entered as 1 or 0.01?
- Enter 1 in a field labeled percent; the model handles the conversion to a fraction.
- Which inputs should I check before using this investment fee impact estimate?
- Check starting portfolio, monthly contribution, annual gross return assumption, annual fee for option a, annual fee for option b, investment horizon. Match each field’s unit and time period, then compare the detailed rows rather than treating the headline alone as the complete answer.
- Does the most favorable row show the most likely outcome?
- No. The table assigns no likelihood to any row. It shows how the result responds to the chosen assumption, and you remain responsible for selecting a plausible range.