Practical guide
Understanding investment fee impact — compare starting portfolio
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.
Comparing two starting portfolio assumptions
The baseline and alternative calculations change starting portfolio while keeping the remaining model inputs the same. This isolates that particular assumption rather than comparing two completely different plans. Read both detailed outcomes and the B-minus-A difference in the headline’s units. A larger number is not automatically better: a larger cost and a larger savings balance have opposite interpretations.
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.
- Starting portfolio
- 50,000 $
- 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
- Alternative starting portfolio
- 62,500 $
Scenario B result: $49,222.12
Scenario A: $42,776.05. Estimated fee drag.
- Scenario A main result: $42,776.05
- Scenario B main result: $49,222.12
- Numeric difference (B − A), in result units: 6,446.07
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.
- Can I also change other assumptions in the alternative?
- This one-factor comparison deliberately holds them fixed. Use the two-scenario version when rates, costs, timing or several household inputs all differ.