// GUIDE
Nominal Return vs Real Return
A return is only as good as what it lets you buy. Inflation is what separates the rate on paper from the rate that matters.
Two different questions
Nominal return answers: how much more money do I have?
Real return answers: how much more can I buy?
The Fisher equation
(1 + Real) = (1 + Nominal) / (1 + Inflation)
Or, rearranged for the real rate:
Real = (1 + Nominal) / (1 + Inflation) − 1
Quick estimate
For small rates, subtraction is a workable approximation:
Real ≈ Nominal − Inflation
It works because the cross term is small. At 12% nominal and 6% inflation the exact answer is 5.66%, not 6.00% — close enough for headline math, off by enough to matter for long projections.
When real returns matter most
- Retirement planning over decades.
- Goals denominated in real things — homes, education, healthcare.
- Comparing fixed deposits to inflation in high-inflation regimes.
When nominal is fine
- Short-term cash flow planning.
- Loan EMI math, where everything is in current-rupee terms.
- Comparing rates over the same short horizon.