Investment Calculator
Real Rate of Return Calculator
Calculate an inflation-adjusted annual return to understand how an investment may change your purchasing power.
Use the Real Rate of Return Calculator
Your results
- Real annual return
- 0.00%
- Purchasing power gain/loss
- 0.00%
- Inflation-adjusted multiplier
- 1.0000x
How this calculator works
- What it does
- Calculate an inflation-adjusted annual return to understand how an investment may change your purchasing power.
- Inputs used
- The estimate uses nominal annual return (%) and inflation rate (%).
- Calculation approach
- The calculator applies the relationships defined for the real rate of return calculator to those inputs and updates real annual return, purchasing power gain/loss, and inflation-adjusted multiplier.
- 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 Nominal annual return (%) using values that match the scenario you want to evaluate.
- Enter Inflation rate (%) using values that match the scenario you want to evaluate.
- Review the assumptions for the real rate of return 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
- Real annual return
- The real annual return estimated by the Real Rate of Return Calculator using nominal annual return (%) and inflation rate (%) and the other values entered.
- Purchasing power gain/loss
- The purchasing power gain/loss estimated by the Real Rate of Return Calculator using nominal annual return (%) and inflation rate (%) and the other values entered.
- Inflation-adjusted multiplier
- A percentage or comparison measure that summarizes the relationship between the calculator's key values.
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
- Nominal annual return (%)
- 7%
- Inflation rate (%)
- 3%
Example results
- Real annual return
- 3.88%
- Purchasing power gain/loss
- 3.88%
- Inflation-adjusted multiplier
- 1.0388x
For this illustrative scenario, the real annual return is 3.88%. Changing any input can materially change the result, so use the example as a walkthrough rather than a guarantee.
Frequently asked questions
What is the real rate of return?
The real rate of return is an investment return adjusted for inflation. It estimates whether purchasing power increased or decreased.
Why not simply subtract inflation from the return?
Simple subtraction is an approximation. The exact formula divides the nominal growth factor by the inflation growth factor.
Can the real return be negative?
Yes. A positive nominal return can still produce a negative real return when inflation rises faster than the investment.
How does deflation affect real returns?
A negative inflation rate can increase real purchasing-power returns because prices are falling, provided inflation remains greater than negative 100%.
Does this result include taxes and investment fees?
No. Enter a return after fees or taxes if you want those costs reflected. The calculator only adjusts the entered nominal return for inflation.
What does the Real Rate of Return Calculator calculate?
Calculate an inflation-adjusted annual return to understand how an investment may change your purchasing power. The result is based only on the inputs and assumptions shown on the page.
How should I interpret the real annual return from the Real Rate of Return Calculator?
Use it as an estimate for the scenario entered, not as a guarantee or personal recommendation. Test changes to nominal annual return (%) and inflation rate (%) to see which assumptions have the greatest effect.