Practical guide
Understanding investment return comparison — sensitivity table
Everyday editorial team · GEOINNOVATION CO., LTD · Published · Updated
What this calculation is for
An annualized return turns a starting and ending value into a comparable compound rate. It is meaningful only when the cash-flow assumptions match: deposits made inside the holding period cannot simply be mistaken for investment gains.
How the method works
The ending-to-starting value ratio is raised to the reciprocal of years. Entered inflation and fee assumptions provide a simplified illustrative real-return comparison rather than an exact tax-adjusted performance measure. The displayed model uses: Annualized compound growth from beginning and ending values; subtract entered annual inflation and fees for illustrative real return.
A worked example
For an illustrative investment return comparison scenario, use Starting value: 10000 $; Ending value: 18000 $; Holding period: 8 years; Inflation assumption: 2.5 %; Estimated annual fee: 0.25 %. The modeled annualized compound return is 7.62%. These are example assumptions, not current prices, official benefit amounts or personalized advice.
Assumptions and real-world differences
A positive starting value is required. Interim deposits, withdrawals, dates and tax effects are excluded; use a cash-flow-aware return method for a portfolio with substantial external flows. Cash flows inside the period change the interpretation; this comparison is not an investment performance report.
Reading the starting value sensitivity table
The tool evaluates the same model across a range of starting value 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 value
- 5,000 $
- Maximum starting value
- 15,000 $
- Number of comparison points
- 5 points
- Ending value
- 18,000 $
- Holding period
- 8 years
- Inflation assumption
- 2.5 %
- Estimated annual fee
- 0.25 %
Sensitivity analysis: 5 comparison points
Starting value ranges from $5,000 to $15,000.
- Starting value: $5,000: 17.36%
- Starting value: $7,500: 11.56%
- Starting value: $10,000: 7.62%
Frequently asked questions
- Is this the same as money-weighted return?
- No. A money-weighted calculation incorporates the amounts and timing of intermediate cash flows.
- Which inputs should I check before using this investment return comparison estimate?
- Check starting value, ending value, holding period, inflation assumption, estimated annual fee. 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.