Inflation & Purchasing Power Calculator

See what any amount will cost in the future, and how much of its value your money loses if it just sits in cash.

₹
An expense, a goal, or a sum you're setting aside, priced at today's cost.
yrs
How far into the future you want to project.
% p.a.
India's long-term consumer inflation has averaged around 5–6% a year.

Future cost

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Enter an amount to begin.

How the numbers are calculated

Future Cost = Present Value × (1 + Rate)Years
Purchasing Power = Present Value ÷ (1 + Rate)Years
  • Future Cost: what the same amount will cost once prices rise for that many years
  • Purchasing Power: what today's amount will actually be worth, in today's terms, that many years from now
  • Real‑value loss: the gap between the two, shown as a percentage

Why your money buys less over time

Inflation is the steady rise in the price of everyday things, food, fuel, rent, school fees. When prices go up, each rupee you hold buys a slightly smaller share of them. That shrinkage is called a loss of purchasing power, and it happens quietly, whether you notice it or not.

Think of a monthly grocery basket that costs ₹20,000 today. At 6% inflation, the same basket costs about ₹21,200 next year. If your income or savings don't grow at least that fast, you can no longer buy the same basket for the same money. For a full breakdown of what drives inflation and how it's measured, see our guide to what inflation means for your money.

What is purchasing power? (A simple example)

Purchasing power is simply the buying power of your money, how much of a good or service one rupee can get you. It's the flip side of inflation: as prices rise, the same rupee note buys less than it used to.

Think of it like a full tank of petrol for a two-wheeler:

  • Some years ago: a full tank might have cost around ₹500.
  • Today: that same tank might cost closer to ₹1,000.

The money didn't change, a ₹500 note is still a ₹500 note, but its purchasing power went down. You now need roughly twice as much money to fill the same tank. That's exactly what the "Purchasing power" figure above measures for your own amount, years and rate.

How to use this calculator

Getting your numbers takes under a minute:

  1. Enter the amount today: Type in a figure in the "Amount today" field, or tap a quick preset such as ₹1L or ₹5L.
  2. Set the number of years: Choose how far into the future you want to project, from 1 to 40 years.
  3. Set the expected inflation rate: India's long-term consumer inflation has averaged around 5–6% a year.
  4. Read the results: The future cost and purchasing power update instantly above, along with a year-by-year chart and table.

The math behind future cost and purchasing power

This tool uses standard compound growth to project how prices, and the value of money, move in opposite directions over time.

Future Cost = Present Value × (1 + Rate)Years
Purchasing Power = Present Value ÷ (1 + Rate)Years
  • Present Value (PV): the amount you enter today
  • Rate: your expected annual inflation rate
  • Years: the number of years you're projecting

Worked example

Say you set aside ₹1,00,000 in cash today and expect inflation to average 6% a year for the next 10 years, the calculator's own default numbers above:

  • Future cost: ₹1,00,000 × (1.06)10 = ₹1,79,085. That's what an equivalent basket of goods will cost in 10 years.
  • Purchasing power: ₹1,00,000 ÷ (1.06)10 = ₹55,839. That's what your untouched ₹1,00,000 will actually be able to buy, in today's terms, 10 years from now.
  • Real loss: your money loses close to 44% of its buying power over that decade, without a single rupee being spent.

What moves your results

  • Time horizon: the longer the period, the harder compounding works. Even a "modest" 6% rate roughly doubles prices every 12 years.
  • Rate sensitivity: small changes in the rate compound into big gaps. At 5% inflation, ₹1 today costs about ₹2.65 in 20 years. At 7%, that same ₹1 costs about ₹3.87, over 45% more, purely from a 2-point difference in the assumed rate.

Common mistakes when estimating future cost

  1. Using one flat rate for a goal decades away, instead of checking in every 2–3 years with updated numbers.
  2. Treating "future cost" and "purchasing power" as unrelated figures. They describe the exact same erosion, just from two different angles.
  3. Forgetting that cost-heavy goals like education and healthcare have tended to run hotter than general inflation, so a single blended rate can understate them.
  4. Reading this as a returns calculator. It only shows what happens to money that isn't invested, it says nothing about what a SIP or fixed deposit could earn.
This calculator is provided for educational and illustrative purposes only. It assumes one constant inflation rate for the entire period you enter, real-world inflation varies year to year. The output is an estimate, not a forecast or a recommendation for any specific investment or savings amount. For advice based on your goals and circumstances, consult a SEBI-registered investment adviser.

Keeping your money ahead of inflation

The numbers above make the case plainly: cash left idle loses value every year, guaranteed. You don't have to just watch it happen, a few practical steps help you keep pace with, or outrun, inflation.

3 smart ways to protect your wealth

  • Move idle cash to higher-yield options: a regular savings account pays next to nothing. Liquid funds, sweep-in fixed deposits, or a high-interest savings account let your cash earn closer to, or above, the inflation rate instead of quietly losing ground.
  • Invest in equities: over long periods, equity mutual funds and stocks have historically grown faster than inflation, which is why they anchor most long-term financial plans.
  • Hold real assets: real estate and gold often rise in value alongside inflation, adding a hedge that cash and fixed income alone can't offer.

FAQs

Why should I treat these numbers as an estimate, not a guarantee?
Real inflation moves every month depending on fuel costs, food prices and government policy. This calculator assumes one steady rate for the whole period, which is the standard way to project a long-term trend, not a promise of what next year will look like.

What is a normal inflation rate?
In India, the Reserve Bank of India targets 4% annual inflation, with a tolerance band of plus or minus 2%. Actual consumer inflation has often run a little above that target over the last decade, which is why 5% to 6% is a reasonable planning assumption for this calculator. If you are pricing a specific goal, education and medical costs have historically risen faster than general inflation, so consider a higher rate for those.

What is the difference between inflation and deflation?
Inflation means prices are rising and money is losing value. Deflation is the opposite: prices fall and money gains value. Deflation can sound appealing, but sustained deflation usually signals a weak economy, since people delay spending in expectation of even lower prices.

Does inflation affect everyone the same way?
No. It tends to hit people on fixed incomes hardest, such as retirees living off a pension or fixed deposit interest, because their income stays flat while expenses keep rising.

What is the real interest rate?
Your real interest rate is your return minus the inflation rate. If a fixed deposit pays 6% interest and inflation also runs at 6%, your real return is roughly zero, the account balance grows, but its purchasing power does not.

What is the difference between future cost and purchasing power here?
They are two views of the same number. Future cost tells you what today's amount will cost to buy later, once prices rise. Purchasing power tells you what that same amount, left untouched, will actually be worth in today's terms once it gets there. One number grows, the other shrinks, but they describe the identical loss.

Does this calculator account for investment returns?
No. It only measures the effect of inflation on a static amount, money sitting in cash or a low-interest account. To see what a SIP or lump sum could grow to at an assumed rate of return, use the SIP Calculator instead.

How does inflation affect retirement or a specific goal like education?
The same way it affects any amount, it makes tomorrow's version of that goal more expensive. Set the years to match your goal's timeline and use a higher rate for cost-heavy goals such as education. The Retirement Calculator and Goal SIP Calculator build inflation directly into the goal amount.

What can I do to protect my money from inflation?
Broadly, keep less sitting idle in cash and more working in assets that have historically outpaced inflation, such as equity mutual funds, and revisit fixed-income instruments locked in at a rate below current inflation. A Finnovate advisor can help translate that into an allocation suited to your goals and risk appetite.

Useful next tools

SIP Calculator See what your money could grow to, instead of losing value sitting idle. Retirement Calculator Check whether your retirement corpus is built for inflation-adjusted costs. Goal SIP Calculator Plan a future goal at today's cost, and the SIP needed to fund it. Financial Calculators Explore every free Finnovate planning tool in one place.