How does inflation reduce purchasing power?

When prices rise, the same number of rupees buys less. This calculator expresses the current amount's future purchasing power by dividing it by the compounded inflation factor.

Is the inflation rate guaranteed?

No. The rate is your assumption for a simplified projection. Actual inflation can be higher or lower and differs across goods and services.

Why does inflation matter for retirement planning?

Retirement expenses occur in the future, so a target based only on today's prices may be too low. Inflation-adjusted estimates can make the goal more realistic.

What inflation rate should I assume?

There is no single correct figure. Use a moderate rate as a base case, then test a higher one, because a plan that only works at low inflation is fragile.

Does the same rate apply to every expense?

No. Education and healthcare costs have historically risen faster than a general index in many periods. Use a goal-specific assumption where you can.

How do I use this with an investment projection?

Inflate the goal's cost with this calculator, then check whether your SIP or lumpsum projection reaches that inflated figure rather than today's price.

Does a higher return automatically beat inflation?

Only the part above inflation adds purchasing power. A nominal return close to the inflation rate leaves you roughly where you started in real terms.

Inflation Calculator

Q: What does an inflation calculator show?

It estimates how much money may be required in the future to buy what a current amount buys today, using a selected annual inflation rate.

Understand how an assumed inflation rate can change the future cost and purchasing power of money.

Under 20 seconds

Updated 1 Sept 2026

12,450people used this

Future equivalent amount

₹3,20,714

Needed after 20 years at the assumed inflation.

Today's amount then

₹31,180

What today's amount would buy in future-value terms.

Estimated purchasing-power loss

68.8%

₹68,820 of today's purchasing power eroded in this model.

Inflation assumption

6% p.a.

Change it to test another scenario.

An inflation calculator applies compound inflation to estimate how much money may be needed in the future to buy what a current amount buys today. It also shows what today's amount may be worth in today's purchasing-power terms after the chosen period; inflation rates vary, so the result is an estimate.

Visual breakdown

A visual view of your calculation.

Interactive charts arrive here soon.

Smart Insights

Generated from the numbers you entered — no guesswork.

At 6% inflation, ₹1,00,000 today may require about ₹3,20,714 after 20 years for equivalent purchasing power.
The same ₹1,00,000 would have purchasing power of about ₹31,180 in that future scenario.
Investments and retirement goals should be evaluated against future costs, not only today's prices.
Inflation is not constant; use multiple assumptions for a more useful planning range.

What is the Inflation Calculator?

What the tool does, who it is for and what it cannot tell you.

The inflation calculator shows what a given amount of money will need to be in the future to buy what it buys today, and what today's amount is worth in future purchasing power, at the annual inflation rate you assume. It applies compounding, so a modest rate over a long horizon produces a much larger gap than most people expect.

It is most useful as a reality check on a goal. A retirement target, an education fund or a house down payment set in today's prices is almost always too low, and this tool shows by roughly how much before you build a plan around it.

It is a projection, not a forecast. Actual inflation varies by year and by category — education, healthcare and rent often behave very differently from a headline index — so treat the output as one scenario among several.

How does the Inflation Calculator work?

Each step the calculator runs, in plain language.

1
Enter today's value
Start with the amount or cost of the goal in current rupees.
2
Choose an assumption
The calculator compounds the annual inflation rate for the selected period.
3
Read both perspectives
The future equivalent shows the amount needed later; the purchasing-power figure discounts today's amount into that future scenario.

What to enter in each field

The exact figure each input expects, so the result means what you think it means.

Current amount: The cost today of the thing you are planning for, or the sum of money whose future purchasing power you want to see.
Annual inflation rate: Your assumption for average annual price rises over the period. Use a goal-specific rate where you have one, and test a range rather than a single number.
Number of years: The horizon until the expense occurs. Compounding means small changes here move the result substantially over long periods.

Inflation Calculator formula

The exact maths behind every number on this page.

Future equivalent = current amount × (1 + inflation rate)^years

current amount: Value of the item or goal in today's rupees
inflation rate: Assumed annual rate as a decimal
years: Time until the future cost is measured

Purchasing power today = current amount ÷ (1 + inflation rate)^years. Both outputs are estimates based on a constant rate.

Inflation Calculator calculation example

₹1,00,000 today, 6% annual inflation and a 10-year horizon.

1Inflation factor(1 + 6/100)^10
2Future equivalent₹1,00,000 × inflation factor
3InterpretationAmount needed to buy the same basket later

At 6% constant inflation, ₹1,00,000 becomes approximately ₹1,79,085 as a future equivalent after 10 years.

Important assumptions

What this calculation includes, and what it leaves out.

Inflation is assumed constant for the selected period; actual inflation changes over time.
The calculation uses compound inflation and does not model taxes, investment returns, changing consumption or category-specific inflation.
The result is a planning estimate, not a forecast of prices or purchasing power.
For retirement planning, consider separate assumptions for expenses, investment returns and income growth.

Financial tips

Practical guidance to act on your result.

Use goal-specific inflation where possible; education and healthcare may rise at different rates.
Compare investment returns with inflation to think in real, not just nominal, terms.
Revisit long-term retirement goals as prices and expenses change.
Use a range of inflation assumptions because actual inflation varies.

Frequently asked questions

Short, direct answers to the questions we hear most.

Guides that explain how to use this calculation in a real decision.

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Disclaimer

CalPaisa calculators are for general information and planning only. Results are estimates based on the values you enter and standard formulas, and may differ from the figures your bank, employer, or tax authority applies. Nothing here is investment, tax, or legal advice. Please confirm important decisions with a qualified professional. Read our financial disclaimer, learn how CalPaisa works, or tell us about a calculation you think is wrong.

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