What is a inflation Calculator?
Inflation quietly erodes purchasing power every year — the same ₹1 lakh buys less a decade from now than it does today, even sitting untouched. This is the single biggest reason "safe" returns that merely match inflation still represent zero real growth, and why retirement and goal planning always needs to account for it explicitly.
Choose whether you want to project an amount forward (what will this be worth in the future) or backward (what was this amount worth some years ago), enter the inflation rate, and the time period.
How the adjustment is calculated
This is the same compounding formula behind investment growth, just applied to the erosion (or historical build-up) of purchasing power instead of an investment balance.
Worked example: what today’s expense becomes
A ₹50,000 monthly expense today, at 6% assumed inflation, becomes roughly ₹66,911 in 5 years, roughly ₹89,542 in 10 years, roughly ₹1,60,357 in 20 years, and roughly ₹2,87,175 in 30 years — more than 5.7 times the original figure by the 30-year mark, without the underlying lifestyle changing at all. Run the same numbers backward: ₹50,000 today was equivalent to spending only about ₹15,590 two decades ago at the same 6% inflation rate — a useful sanity check on how much prices have already moved within a single working career.
Why "real return" is the number that actually matters
An investment’s real return is its stated return minus inflation — the number that actually reflects growth in purchasing power, not just growth in rupee count. A fixed deposit earning 7% when inflation runs at 6% is growing your purchasing power by only about 1% a year in real terms, and after tax on the FD interest, that real return can turn negative even though the account balance keeps rising. This is the core reason "safe" instruments can quietly lose ground over long periods, and why any return assumption in a calculator on this site is worth mentally checking against inflation, not just taken at face value.
Frequently asked questions
What inflation rate should I use?
India’s long-run retail (CPI) inflation has broadly averaged around 5–6% over the past decade, though it varies year to year. For personal expense planning, some people use a slightly higher rate to be conservative, since categories like education and healthcare have historically run above the headline number.
How is this different from the Retirement Calculator?
This tool does one isolated inflation calculation on a single amount. The Retirement Calculator uses the same underlying maths as one part of a fuller retirement corpus projection.
Does a bank FD really "lose" money if the rate is below inflation?
In real (purchasing-power) terms, yes — if your FD earns 7% and inflation runs at 6%, your money grows by only about 1% in real terms, and after tax on the FD interest, the real return can turn negative.
Is inflation the same for every category of expense?
No — the headline CPI figure is a weighted average across categories. Education and healthcare have historically run above the headline rate in India, while some categories (electronics, for instance) can see prices fall over time. A single blended rate is a simplification, useful for a rough estimate but not precise for any one specific expense category.
Should I use the same inflation rate for pre- and post-retirement planning?
Many planners do use a single rate for simplicity, though some assume slightly higher inflation for healthcare-heavy retirement years specifically. This calculator uses one rate for the whole period; for a more nuanced retirement projection, see the Retirement Calculator’s handling of the accumulation and withdrawal phases.
Why does a small inflation rate change move the result so much over 30 years?
Because it compounds — the same mathematical effect that makes a small difference in investment return meaningfully change a 30-year SIP projection. A 2-percentage-point swing in inflation, compounded over three decades, produces a far bigger gap than intuition suggests.
Can I use this to figure out how much salary increment I need just to keep pace?
Yes — the future value mode shows what your current expenses will cost in the future; comparing that growth rate to your expected salary increment tells you whether your income is keeping pace with, outrunning, or falling behind inflation over the same period.