Real Rate of Return Calculator
Investment return after inflation.
Calculate real (inflation-adjusted) rate of return on investment. Enter nominal return and inflation rate to see real return.
What this tool does
Enter nominal return and inflation rate. The tool calculates real return.
Enter Values
Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Real return = inflation-adjusted return. 7% nominal at 3% inflation = 3.88% real (not simply 4%). Compounding effect matters. Real return is what determines actual purchasing power growth.
Run it with sensible defaults
Using nominal return of 7%, inflation rate of 3%, the calculation works out to 3.88%. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.
The levers in this calculation
The inputs — Nominal Return and Inflation Rate — do not pull with equal force. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.
How the math works
Fisher equation: real return = (1+nominal)/(1+inflation) - 1. The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".
Why investors run this
Most people's intuition for compounding is wrong — not because the math is hard, but because linear thinking doesn't account for curves. Running numbers through a calculator like this one is the cheapest way to recalibrate that intuition before making an irreversible decision about contribution rate, asset mix, or retirement age.
What this doesn't capture
Steady-rate math ignores real-world volatility. Actual returns are lumpy; sequence-of-returns risk matters most in drawdown; fees and taxes drag on compound growth; and behaviour changes in drawdowns can reduce outcomes below the projection. Treat the number as one scenario, not a forecast.
Related calculations worth running
Plans get firmer when you triangulate. Alongside this one, the compound interest calculator, the inflation calculator, and the inflation adjusted return calculator tend to come up in the same conversations. Running two or three together exposes inconsistencies in any single assumption — which is usually where the useful insight lives.
Real return produces inflation-adjusted figure based on the inputs provided.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
Fisher equation: real return = (1+nominal)/(1+inflation) - 1.
References
Frequently Asked Questions
Why not simple subtraction?
How significant?
Important for retirement?
What inflation to use?
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