Real Return Calculator
Did your investment beat inflation? Calculate inflation-adjusted return and the change in purchasing power using nominal return and inflation for the same period.
Your numbers
Use one currency for all amounts. Changing this selector changes formatting only; it does not convert values.
Real return for the period
4.85%- Ending nominal balance
- $10,800.00
- Ending balance in starting-period money
- $10,485.44
- Purchasing power gained or lost
- $485.44
- Nominal profit or loss
- $800.00
Does your return still beat inflation?
Same investment return and period; inflation rates below are hypothetical.
| Period inflation | Real return | Purchasing power change |
|---|---|---|
| 0% | 8% | $800.00 |
| 3% | 4.85% | $485.44 |
| 5% | 2.86% | $285.71 |
| 8% | 0% | $0.00 |
How the calculation works
Use effective total rates over the same period: one year, one month, or the full holding period. The result uses that period and is not automatically annualized. No deposits or withdrawals are modeled. Use a nominal return already net of costs and taxes if you want those reflected; no further deductions are made. Currency selection changes formatting only.
Worked example
A 10,000 starting balance earns 8% while prices rise 3% over the same period. The ending balance is 10,800, worth 10,485.44 in starting-period money. Purchasing power gains 485.44: a real return of 4.85%, rather than the 5% subtraction estimate.
Common question
Why not just subtract inflation from the return?
Subtraction is an approximation. The exact calculation divides the nominal growth factor by the price growth factor. At 8% return and 3% inflation, 1.08 / 1.03 − 1 is about 4.85%.
Can I enter a multi-year return?
Yes, if inflation is cumulative over those same years. Do not mix a total holding-period return with one year’s inflation.
Does a positive real return prove the investment was a good choice?
No. It shows a purchasing-power gain under your inputs, not the risk taken, liquidity, taxes not included in the input, or future performance.