What is the Inflation Calculator?
Inflation is the rate at which money loses purchasing power. At India’s long-run ~6% CPI inflation, prices double roughly every 12 years — which means every financial goal you have is a moving target, and every rupee kept idle is quietly shrinking.
This calculator is for goal planners sizing future costs, investors checking whether their returns beat inflation, and anyone converting a future amount into today’s purchasing power. It runs inflation in both directions: forward, to show what today’s costs will become (a ₹10 lakh wedding, a ₹20 lakh car, a ₹50 lakh education); and backward, to show what a future amount is worth today.
Different goals inflate at different rates: education ~10–12%, healthcare ~12–14%, housing ~7–8%, consumer goods ~5–6%. Use goal-specific rates, not the headline CPI, for serious planning — the calculator lets you set any rate from 1% to 15%.
Future cost and purchasing power
Future cost = P × (1 + g)ᵗ | Real value = P ÷ (1 + g)ᵗ
| Symbol | Meaning |
|---|---|
| P | Cost or amount in today’s rupees |
| g | Annual inflation rate |
| t | Years into the future |
Worked example
At 6% inflation, a ₹10 lakh goal today costs ≈ ₹17.9 lakh in 10 years and ≈ ₹32.1 lakh in 20 years. Conversely, ₹1 crore received 20 years from now buys what ≈ ₹31.2 lakh buys today.
| Years | Cost of a ₹10L goal | Real value of ₹1 Cr |
|---|---|---|
| 5 | ₹13.4 L | ₹74.7 L |
| 10 | ₹17.9 L | ₹55.8 L |
| 20 | ₹32.1 L | ₹31.2 L |
| 30 | ₹57.4 L | ₹17.4 L |
Benefits of the Inflation Calculator
Makes future goals concrete and honest
Seeing that a child’s education will cost ₹50 lakh, not today’s ₹20 lakh, forces realistic saving rather than wishful thinking.
Exposes the hidden cost of idle cash
₹10 lakh in a savings account at 3% loses real value every year at 6% inflation — the calculator makes the erosion visible.
Forces real-return thinking on every investment
By showing nominal versus real value, it reframes “7% FD” as “1% real return” — the only number that matters for wealth.
Simple two-input model anyone can run
Just an amount, a rate, and a duration — no financial knowledge needed to grasp the result.
Works for any goal-specific inflation rate
Use 12% for education or 14% for healthcare instead of headline CPI, for accurate goal sizing.
Limitations to keep in mind
Future inflation is unknowable — plan with ranges
No one can predict 20-year inflation; use a range (5–8%) rather than a single point estimate.
Category inflation differs sharply from CPI
Education and healthcare inflate at nearly double the CPI — using the headline rate under-sizes those goals.
Does not capture lifestyle inflation
Upgrading tastes (bigger house, better car) raise expenses beyond pure price inflation; the calculator models only prices.
Compounds planning anxiety if viewed without an action plan
Seeing future costs without a saving plan can paralyse; pair the number with a SIP target to make it actionable.
Assumes constant inflation
Real inflation fluctuates year to year; the calculator uses a steady rate for simplicity, which smooths over spikes.
Common mistakes to avoid
Planning goals in today’s rupees
A child’s education fund sized at today’s fees will fall short by half or more.
Using headline CPI for every goal
Education and healthcare inflate at nearly double the CPI — use category rates.
Calling a 7% FD “safe”
After 6% inflation and 30% tax, its real return is negative — safety of principal, erosion of value.
Ignoring inflation in retirement math
Fixed pensions and annuities lose half their purchasing power every 12 years.
Forgetting lifestyle inflation
As income rises, spending rises too; plan for future expenses that grow with your lifestyle, not just prices.
Expert tips for better results
Use goal-specific inflation rates
12% for education, 14% for healthcare, 7% for housing, 6% for general goals — accuracy beats simplicity here.
Always judge returns after inflation
A 12% equity return at 6% inflation is a 6% real return — the actual growth in what your money buys.
Plan with a range, not a point estimate
Run the calculator at 5% and 8% to bracket your goal; the higher number is your safety-first target.
Pair every future cost with a SIP
Once you know the future cost, use the SIP calculator to find the monthly investment that reaches it.
Revisit inflation assumptions every 3 years
Inflation regimes shift; update your goal costs as actual inflation data comes in.
When to use this calculator
- Sizing education and wedding funds in future rupees
- Checking whether your salary growth beats inflation
- Converting a future corpus into today’s purchasing power
- Setting realistic return targets (inflation + margin)
Frequently asked questions
Sources & references
- Ministry of Statistics and Programme Implementation — CPI inflation data
- RBI — inflation targets and historical inflation series
- WealthRise Methodology page — inflation adjustment convention