Inflation is the rate at which prices rise over time. In India, long-term average inflation has been 6-7%. In the US, 2-3%. In the UK, 2-4%. Low numbers — but compounded over decades, they are devastating.
The compounding math
At 6% inflation: - ₹100 today = ₹75 of purchasing power in 5 years - ₹100 today = ₹56 in 10 years - ₹100 today = ₹31 in 20 years - ₹100 today = ₹17 in 30 years
In 30 years, your ₹100 buys about one-sixth of what it buys today. This is why keeping money in a savings account "for safety" is the opposite of safe.
Real return vs nominal return
- Nominal return = the number on the statement
- Real return = nominal − inflation
If your FD pays 7% and inflation is 6%, your real return is 1%. After 30% tax on that 7% interest, your post-tax nominal is 4.9%. Real post-tax return = 4.9% − 6% = −1.1%. You're going backwards.
Meanwhile equity at 12% nominal − 6% inflation = 6% real. Post-tax (12.5% LTCG): still about 5% real. Massive gap.
Why "safe" is risky for long horizons
A 30-year-old keeping their retirement savings in FD: - Contribution: ₹10,000/month for 30 years = ₹36L total contributed - Nominal value at 7% FD: ₹1.23 crore - In today's rupees (after 6% inflation): ₹21 lakh - You literally have less purchasing power than you put in
Same person in equity SIP at 12%: - Nominal: ₹3.5 crore - In today's rupees: ₹60 lakh - Real purchasing power: 3× of FD scenario
What keeps up with inflation
| Asset | Typical long-term real return (India) | |---|---| | Equity (index fund or diversified MF) | 5-7% | | Real estate (quality metros) | 2-4% | | Gold | 1-3% | | PPF / EPF | 0.5-2% | | FD / savings account | −1 to 1% | | Cash under mattress | −6 to −7% |
The practical takeaways
1. Emergency fund in FD: yes. Keep 3-6 months of expenses liquid even at negative real return — that's insurance, not investment. 2. Long-term goals: equity-heavy. 7+ years to goal = equity must dominate. 3. Retirement income: 50-70% equity even in retirement. You will live 20-30 years post-retirement. Inflation eats a fixed pension. 4. Build an inflation-adjusted SIP. A step-up SIP (10% per year) roughly matches salary growth and stays ahead of price inflation.
Calculate the real numbers
Use our Inflation Calculator — enter today's amount and years, see what it equals in future rupees. Then SIP Calculator to see how much you need to invest monthly to beat it.