Inflation Calculator
Find out what today's money will be worth in the future, or what a future amount is really worth in today's terms. Project a rupee amount forward using an assumed annual inflation rate, or discount a future amount back to see its present-day purchasing power.
Fill in the form and select "Calculate" to see your results here.
What is inflation, and why this calculator matters
Inflation is the gradual rise in the general price of goods and services over time. As prices rise, the same rupee amount buys less than it used to — a rupee's purchasing power erodes year after year. This matters enormously for long-term financial planning: if you are saving for retirement, a child's education, or a house years or decades from now, the cost of that goal will not stay at today's price. It will rise with inflation. Planning with today's rupee figures for a goal that is 15 or 20 years away means you will very likely fall short, because the actual future cost will be significantly higher than what it costs today. This calculator lets you see that gap directly — either by projecting a today's amount forward to its future cost, or by discounting a future amount back to show what it is really worth in today's terms.
How to use this calculator
- Choose a calculation mode. Use "Future Cost of Today's Amount" when you know what something costs today and want to see what it will cost by the time you actually need the money — for example, working out what a goal that costs ₹10 lakh today will cost when you reach it in 15 years.
- Use "Today's Value of a Future Amount" when you have a fixed rupee figure that applies at a future date and want to know what that amount is really worth in today's terms — for example, an insurance payout, a maturity amount, or a pension figure quoted for a date years from now.
- Enter the amount. In future-cost mode this is today's starting amount; in present-value mode this is the future amount you already know.
- Enter the inflation rate you want to assume for the period, and the number of years between today and the point at which the amount applies.
- Select "Calculate" to see the equivalent value and how much purchasing power is gained or lost to inflation over the period.
Formula
Both directions use the same compound-growth relationship — future-cost mode projects an amount forward, and present-value mode reverses the same formula to discount an amount back. See the editorial policy for how calculation methods on this site are verified.
Example
Future cost: suppose ₹1,00,000 worth of today's goods and services, at an assumed 6% annual inflation, over 10 years. The equivalent future cost works out to approximately ₹1,79,084.77 — meaning you would need close to ₹1,79,085 in 10 years just to buy what ₹1,00,000 buys today. The difference, about ₹79,084.77, is the extra money you would need purely to keep pace with inflation, not to buy anything more.
Present value: suppose you are told you'll receive ₹5,00,000 fifteen years from now — say, from a maturing policy or a fixed payout. At an assumed 6% inflation, that future amount is only worth about ₹2,08,632.53 in today's terms. In other words, ₹5,00,000 received 15 years from now will have roughly the same purchasing power that about ₹2,08,632.53 has today.
Factors that affect the result
- Inflation is not constant. This calculator assumes one flat, unchanging rate for the entire period you enter. In reality, inflation varies from year to year based on economic conditions, so treat the result as an estimate under a simplifying assumption, not a precise forecast.
- Different expenses inflate at different rates. Categories such as education and healthcare have historically risen faster in India than the general consumer price index used to measure overall inflation. If your goal is heavily weighted toward one of these categories, consider running the calculator with a higher rate for a more realistic estimate.
- Long-term goals need future, inflation-adjusted figures. When planning for retirement or another long-term goal, using today's expense figure without adjusting it for inflation will understate how much you actually need to save. Always convert today's cost to its expected future cost before setting a savings target.
- The number of years matters more than it appears. Because inflation compounds, small differences in the assumed rate or the time horizon can meaningfully change the result over long periods — the gap between a 5% and 7% assumption widens considerably over 20-30 years.
Frequently Asked Questions
There is no single official figure to use, but India's long-term average consumer inflation is commonly assumed to be around 5-7% for financial planning. Many planners use 6% as a reasonable middle estimate for general expenses, though healthcare and education have historically inflated faster than this. You can adjust the rate in this calculator to see how sensitive your result is to the assumption.
Prices of goods and services generally rise over time, a phenomenon called inflation. If prices rise but the number of rupees you hold stays the same, each rupee buys a smaller share of goods than it used to. This is why ₹1,00,000 today will not buy the same basket of goods and services in 10 or 20 years — you would need a larger rupee amount just to keep pace.
The underlying math is the same compound growth formula used in a compound interest calculation, but the meaning is opposite. Compound interest describes money growing in value as it earns returns. This calculator's future-cost mode uses the same formula to describe the erosion of purchasing power — the rupee amount needed in the future just to match what a smaller amount buys today, with no actual growth in value involved.
For any goal more than a few years away — retirement, a child's education, buying a house — yes. Using today's cost figure without adjusting for inflation will understate how much you actually need by the time you reach that goal. Short-term goals within a year or two are less affected, since prices have less time to rise.
No. This calculator applies one flat, constant inflation rate for the entire period you enter. In reality, inflation varies year to year, and categories such as education and healthcare have often risen faster than the general consumer price index. For a more accurate goal estimate, you can run this calculator separately with a higher rate for expense categories you expect to inflate faster.
Related calculators
This calculator provides estimates only, based on a single assumed constant inflation rate applied for the entire period entered. Actual inflation varies year to year and by expense category, and this tool is not a substitute for professional financial planning advice. See our full disclaimer.