Real Rate of Return Calculator (Fisher Equation)
Discover the true purchasing power growth of your investments after accounting for inflation and income tax drag in India.
Your money grows faster than rising prices in India.
*Computed using the exact Fisher Equation: ((1 + r_net) / (1 + i)) - 1.
Important Educational Disclaimer for Calculator Results:
Calculations are estimates based on your entered inputs and selected return or inflation assumptions. Results are illustrative, hypothetical, and not guaranteed. Actual market returns, interest rates, tax liabilities, and inflation rates will vary and may materially alter your final outcome. This calculator does not constitute financial, investment, or tax advice.
What is your real purchasing power growth?
A nominal return of 12% p.a. with 6% annual inflation delivers a true Real Rate of Return of 5.66% per year.
- Post-Tax Nominal Return: 12% p.a.
- 10-Year Purchasing Power Expansion: Your money's real buying power will grow by +73.4% over a decade.
- Fixed deposits yielding 7% in the 30% tax bracket deliver 4.9% post-tax. With 6% inflation, their real return is -1.04% (wealth destroyer).
How This Calculator Works
Uses the exact Fisher Equation. The simplified rule-of-thumb (Nominal - Inflation) is inaccurate for higher rates; the multiplicative ratio accurately measures relative purchasing power.
Real Return = [(1 + Post-Tax Nominal Rate) / (1 + Inflation Rate)] - 1Variables in Formula:
Worked Step-by-Step Example
You invest in an equity mutual fund compounding at 12% p.a., pay 12.5% LTCG tax (effective ~10.5% post-exemption), with 6% retail inflation.
Key takeaway: Your wealth genuinely expands in purchasing power at ~4.25% per year, multiplying your real standard of living over time.
Common Mistakes to Avoid
⚠ Celebrating nominal double-digit returns without checking inflation
A 10% return in an economy with 8% inflation only creates 1.85% real growth. Always assess assets by their inflation-beating margin.
⚠ Ignoring tax drag on debt and fixed deposits
Tax on interest income is paid annually, destroying compounding. Equity mutual funds only incur tax upon eventual redemption.
Frequently Asked Questions
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