Inflation Calculator

Quick answer

Inflation is the rise in prices over time, eroding the purchasing power of money. The calculator works in both directions — projecting today's costs forward, or showing what today's value was worth in past years.

What is Inflation Calculator?

Inflation means money buys less over time. A ₹100 grocery basket in 2010 cost about ₹240 in 2026. The same money in your savings account, growing at 4%, cannot keep up — you have lost purchasing power even though the rupee number went up.

India's average retail inflation (CPI) over the past decade has been roughly 5.5-6%. Some years it spikes (2010, 2013, 2022); some years it dips (2017, 2018). Long-term planning should assume 6% as a baseline for non-discretionary spending.

Inflation matters most for retirement and long-term goals. ₹1 crore today is a comfortable retirement corpus; the same ₹1 crore in 30 years (at 6% inflation) is worth ~₹17 lakh in today's money. Plan accordingly.

Inflation math

Formula

Future cost = Current × (1 + inflation)ⁿ Today's purchasing power of future money = Future / (1 + inflation)ⁿ

Current: Today's value—amount in current rupees
inflation: Annual inflation rate—as decimal (6% = 0.06)
n: Years—duration over which inflation acts

Worked example

Today's value₹1,00,000

Inflation6%

Years20

Future cost = 1,00,000 × (1.06)²⁰

= 1,00,000 × 3.207

➜ Equivalent in 20 yrs: ₹3,20,714 • Today's purchasing power of ₹1L in 20 yrs: ₹31,180

How to use this calculator

Three inputs: amount, inflation rate, years.

Enter amount
Today's rupee amount you want to project forward (or backward).
Enter inflation rate
6% is reasonable for India long-term. Use 7% for healthcare and education (which inflate faster than CPI).
Enter years
Time horizon for the projection.

Inflation use cases

Retirement target setting

Project today's monthly expenses to retirement age. ₹50,000/month today might need ₹2.5 lakh/month in 25 years.

Children's education planning

Education inflation runs higher (8-10%). Project today's fee structure to the year your child enters college.

Salary negotiation

If your salary rose 5% but inflation was 6%, you took a real-terms pay cut. Use this to argue for a better hike.

Goal corpus calculation

Working backwards: if you need ₹1 crore in today's terms in 30 years, you actually need ₹5.74 crore at 6% inflation.

Common mistakes to avoid

Planning long-term goals in today's rupees

A ₹25 lakh wedding today costs ~₹50 lakh in 12 years at 6% inflation. Inflate the goal first, then work out the SIP or lumpsum needed for the inflated figure.

Using one blanket inflation rate for everything

CPI (~6%) is an average. Education and healthcare run 8-12%, fuel is volatile, electronics actually deflate. Match the rate to the specific expense you're planning for.

Celebrating nominal FD returns

A 7% FD during 6% inflation grows purchasing power by less than 1% a year — and after 30% tax on the interest, it actually shrinks. Judge every investment by its real, post-tax return.

Glossary

CPI (Consumer Price Index): Official inflation measure based on a basket of consumer goods.
WPI (Wholesale Price Index): Inflation at the wholesale level. Different from CPI.
Purchasing power: What money can actually buy. Eroded by inflation.
Real return: Investment return after subtracting inflation. The number that actually matters.
Hyperinflation: Inflation above 50% per month (rare). Wipes out savings rapidly. India has not experienced this in modern times.

Frequently asked questions

What is India's current inflation rate?

India's CPI inflation has averaged around 5–6% over the past decade, within the RBI's 2–6% tolerance band. Education and healthcare inflation run higher — often 8–10% a year — which matters when planning long-term goals.

How does inflation reduce my money's value?

At 6% inflation, prices double roughly every 12 years, meaning ₹1 lakh today buys only about ₹50,000 worth of goods 12 years from now. The calculation is Future Cost = Present Cost × (1 + inflation)^years.

What inflation rate should I use for financial planning?

Use 6% for general expenses, 8–10% for education and healthcare goals, and 5% for a conservative retirement estimate. Using a rate that's too low is the most common planning error — it silently understates the corpus you'll need.

What is real return vs nominal return?

Nominal return is what your investment reports; real return is what's left after inflation. Real Return ≈ (1 + nominal) / (1 + inflation) − 1. An FD at 7% with 6% inflation gives a real return of just 0.94% — barely preserving purchasing power.

Which investments beat inflation in India?

Historically, equity (10–14% long-term CAGR) and real estate have outpaced inflation, while savings accounts (2.5–4%) and many FDs barely keep up after tax. That's why long-term goals need growth assets, not just deposits.

References

RBI — Inflation outlook— Reserve Bank of India
MoSPI — Consumer Price Index data— Ministry of Statistics

Disclaimer: Results are estimates based on the inputs you provide. They are not professional advice. For consequential decisions — financial, tax, medical, or legal — verify with a qualified professional.

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