Real Rate of Return Calculator
Find your return after adjusting for inflation.
Results update as you type.
How it works
The return you see on an investment is the nominal return, but what really matters is how much more you can buy afterward, which inflation erodes. This calculator finds your real, inflation-adjusted return. You enter the nominal return and the inflation rate, and it returns the real return. It uses the exact Fisher equation, dividing one plus the nominal return by one plus the inflation rate and subtracting one, rather than the common rough approximation of simply subtracting inflation from the nominal return. The two are close at low rates but diverge when rates are high. The real return reveals your true gain in purchasing power: a 7 percent nominal return with 3 percent inflation is not a 4 percent real gain but about 3.88 percent, because inflation compounds against your growing balance. This matters enormously for long-term planning, because ignoring inflation overstates how much your wealth is actually growing. If your nominal return is below the inflation rate, your real return is negative, meaning you are losing purchasing power even though your account balance rose, a common trap with low-yield savings during high inflation. Investors use the real return to compare investments honestly, set retirement targets in today's dollars, and understand why beating inflation is the real goal. Enter your nominal return and the inflation rate to compute your real return.
Real return = ((1 + nominal) / (1 + inflation)) − 1
The real return divides one plus the nominal return by one plus the inflation rate, then subtracts one. This is the exact Fisher equation. It shows how much your purchasing power actually grew after inflation, which is more meaningful than the nominal return that ignores rising prices.
Source:Financial economics (Fisher equation)
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter nominal return and inflation rate.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
Real return updates instantly as you type — no button to press.
Frequently asked questions
What is a real rate of return?
The real rate of return is your investment return after adjusting for inflation, showing the actual increase in your purchasing power. Unlike the nominal return, which is the raw percentage gain, the real return accounts for rising prices eroding the value of money, giving a truer picture of how much better off you are.
How do you calculate real return?
Use the Fisher equation: divide one plus the nominal return by one plus the inflation rate, then subtract one. For a 7 percent nominal return and 3 percent inflation, that is 1.07 divided by 1.03 minus one, about 3.88 percent. The calculator applies this exact formula rather than a rough subtraction.
Why not just subtract inflation from the return?
Subtracting inflation from the nominal return is a common approximation that is close at low rates but not exact, because inflation compounds against your growing balance. The Fisher equation divides rather than subtracts, giving the precise real return. The difference grows at higher rates, so the exact method matters for accuracy.
What does a negative real return mean?
A negative real return means inflation outpaced your nominal return, so your purchasing power fell even though your account balance rose. This happens, for example, with low-yield savings accounts during periods of high inflation. It is a reminder that a positive nominal return can still leave you worse off in real terms.
Why is real return important for planning?
Real return reflects genuine growth in what your money can buy, which is what ultimately matters for goals like retirement. Planning with nominal returns overstates progress because it ignores inflation eroding future purchasing power. Using real returns, or expressing targets in today's dollars, gives a realistic view of whether your investments are truly building wealth.