General
Real Return Calculator
Adjust any nominal return for inflation and fees to see the real (purchasing-power) return, using the exact Fisher relation.
Real return
4.85%
Effective nominal return
8.00%
after fees, before inflation
Quick approximation
5.00%
nominal minus inflation
A 8.00% nominal return, at an assumed 3.0% inflation rate, works out to a real return of approximately 4.85% — what your money actually grows by in purchasing-power terms.
This uses the exact Fisher relation rather than the simpler "nominal minus inflation" shortcut, which would give 5.00% here — a small difference at low rates that widens as rates rise.
Your numbers
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Subtracted from the nominal return before the inflation adjustment.
See how the inflation rate changes the result
Same nominal return and fees, three different assumed inflation rates — not predictions, just different assumptions.
2% inflation
5.88%
real return
3% inflation
4.85%
real return
5% inflation
2.86%
real return
The formula
(1 + Real Return) = (1 + Nominal Return) ÷ (1 + Inflation Rate)
This is the exact Fisher relation, solved for real return. The "quick approximation" shown alongside it is the simpler nominal-minus-inflation shortcut — useful for a rough mental estimate, but it systematically overstates real return, more so as rates climb.
How to read it
Every return you hear quoted — a fund's annual performance, a savings account's interest rate, a bond's yield — is almost always nominal. It tells you how much more money you have, not how much more that money can buy. Real return closes that gap.
The difference matters most over long horizons and during periods of higher inflation. A "safe" 3% nominal return during 4% inflation is actually a loss of purchasing power, even though the account balance only ever goes up. This is one reason cash and low-yield savings are a genuinely risky place to park money for the long term, despite feeling safe.
Real return doesn't account for taxes, which are typically owed on the nominal gain, not the real one — a detail that makes the true after-tax, after-inflation return lower still than the figure above.
Frequently asked
What's the difference between nominal and real return?+
Nominal return is the raw percentage gain in nominal terms — what a statement or fund fact sheet usually quotes. Real return adjusts that for inflation, showing how much your purchasing power actually grew. A 6% nominal return during 4% inflation grew your buying power by much less than 6%.
Why not just subtract inflation from the nominal return?+
That shortcut (nominal minus inflation) is close enough at low rates but becomes noticeably inaccurate as rates rise, because it ignores that inflation also erodes the return itself, not just the principal. The exact relationship — the Fisher equation — divides instead of subtracts: (1 + real) = (1 + nominal) ÷ (1 + inflation). This calculator shows both so you can see the gap.
Where does the annual fee fit in?+
It's subtracted from the nominal return first, before the inflation adjustment — so a fund's expense ratio or an advisory fee reduces the return you're actually earning, and inflation is then applied to that already-reduced figure.
Can real return be negative even with a positive nominal return?+
Yes, and it's common. Any time inflation exceeds your nominal return (after fees), your real return is negative — you're gaining money in nominal terms but losing purchasing power. This is exactly what happens to cash sitting in a low-interest account during a period of higher inflation.
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View all →Educational tool, not advice. This calculator illustrates a standard formula using the numbers you enter. It does not account for your full financial picture, taxes, or local market conditions, and it is not a recommendation to buy, sell, or hold any asset. Speak with a licensed professional before making investment decisions.