A ₹50,000 monthly salary felt decent in 2016. Today that same ₹50,000 buys you what about ₹31,000 bought back then. That is Indian inflation doing its quiet, invisible damage. Nobody feels it year to year. Everyone feels it looking back.
The calculator below works both directions. Type in an amount today and see what it costs in N years. Or see what that future rupee figure is actually worth in today’s purchasing power.
India’s inflation history and what 6% means in practice
India’s CPI inflation has averaged 5.5–6.5% over the 2010–2025 period according to RBI data. There were spikes (2013 at 9.4%, 2022 at 7.8%) and troughs (2017 at 3.3%). For long-term planning, 6% is a reasonable midpoint.
At 6% per year, the rule of 72 says prices double every 12 years. So:
- ₹1 lakh in 2026 costs ₹2 lakh in 2038
- ₹1 lakh in 2026 costs ₹4 lakh in 2050
That four-lakh number is not dramatic. It is just what four decades of 6% inflation does to every rupee you earn or save.
The formula
Future cost:
FC = Amount × (1 + r)^n
Real value of a future amount in today’s money (purchasing power equivalent):
PV = Amount / (1 + r)^n
where r = annual inflation rate and n = years.
Both directions use the same formula. The first shows you what you will need to pay. The second tells you how much a future sum is really worth. The difference matters when evaluating pension payouts, insurance maturity values, or any fixed income that arrives years from now.
What actually inflates faster than 6%
The 6% CPI average masks some categories that have run much hotter in India:
| Category | Approximate 10-yr CAGR |
|---|---|
| Healthcare / hospitalisation | 12–14% |
| Private school fees | 10–12% |
| Eating out / restaurants | 7–9% |
| Fuel | 5–8% (volatile) |
| Rent (metro cities) | 6–9% |
| Vegetables / groceries | 5–7% |
| Electronics / gadgets | 0–2% (deflation in some years) |
For retirement planning, a household that spends heavily on healthcare and education should use 8–9% in the calculator, not 6%. For someone whose primary expense is rent and groceries, 6% is fine.
Why this matters for retirement planning
The number most retirement calculators get wrong is using today’s expenses without inflating them. If you spend ₹60,000/month now and plan to retire in 25 years, your retirement-day expenses are not ₹60,000. At 6% inflation, they are ₹60,000 × (1.06)^25 = ₹2,57,400/month. Planning for ₹60,000 leaves a ₹2 lakh gap every single month from day one of retirement.
Use the inflation calculator on this page to sanity-check your retirement corpus target. Then cross-check with the Retirement Corpus Calculator which handles the full corpus computation.
Inflation vs fixed deposits
An FD giving 7% returns when inflation is 6% is earning you 1% real return. That is not wealth creation. It is barely preservation. When you factor in 30% tax on FD interest (if you are in the top slab), the post-tax yield is 7% × 0.70 = 4.9%, which is below inflation. You are losing real purchasing power while the nominal balance grows.
This is why equity exposure is not optional for long-term goals. The SIP Calculator shows you what even a modest ₹5,000/month compounding at 12% does over 20 years. The gap between 12% and 6% inflation is 6 percentage points of real return every year, for decades.
Worked example: Priya’s monthly grocery bill in Hyderabad
Priya spends ₹15,000/month on groceries in Hyderabad. Her parents spent roughly ₹6,000 on groceries in 2012 (in the same city, same lifestyle). That is a 10-year period.
Inflation check: ₹6,000 × (1.06)^10 = ₹10,745. But the actual bill is ₹15,000. The real grocery inflation in her household has been closer to 9.5%, not 6%. That is what happens when you combine vegetable price volatility, restaurant habits replacing home cooking, and imported ingredient costs.
For anyone doing a careful retirement plan, auditing actual inflation category by category is more useful than using a headline number. The headline is an average. Your life is not average.
Frequently asked questions
What inflation rate should I use for retirement planning?
6% for a rough plan. 7–8% if your expenses skew toward healthcare, education, or eating out. 5% if your lifestyle is simple and you live in a tier-2 city with lower rental and food costs. Do not use less than 5% for any goal beyond 5 years in India.
Does inflation affect equity SIP returns?
Equity returns are quoted in nominal terms. When people say Nifty 50 has averaged 12%, that includes the inflationary component. The real return is 12% minus 6% inflation = roughly 6% in purchasing-power terms. Still strong, but not 12%. Plan goals in nominal terms and use nominal return assumptions to keep the maths consistent.
Is the inflation rate in India going down?
RBI’s medium-term inflation target is 4% with a ±2% band. In practice, Indian inflation has been structurally sticky above 5% due to food price volatility (which has a large weight in CPI), rising urban rents, and energy costs. For planning beyond 10 years, 6% is a more defensible assumption than 4%.
What’s the difference between CPI and WPI?
CPI (Consumer Price Index) measures what households pay. WPI (Wholesale Price Index) measures factory-gate and wholesale prices. For personal finance planning, always use CPI. WPI often diverges from CPI significantly and has less direct relevance to your grocery, rent, and hospital bills.
Sources
- RBI Annual Report 2024-25: CPI inflation data series
- MOSPI (Ministry of Statistics): Consumer Price Index historical data
- NSE: Real equity return data (nominal minus CPI)