Insights Page/Personal Finance

Inflation Calculator: How It Works, Formula and a Worked Example

Calculate the future cost of goods and purchasing power reduction. Here is the formula, a worked example, the mistakes to avoid, and a free calculator with a downloadable PDF report.

Abhishek sharma
Editorial Lead
Updated September 17, 2026
4 Min Read

If you have landed here, you probably already have a rough figure in your head and want to confirm it. Good instinct. Rough figures are usually off by more than people expect, and the difference compounds. Here is how the calculation really runs, and how to check yours in under a minute.

Cover image slot — add a screenshot or illustration from Admin → Blog when it is ready.

Prefer to start with your own figures? Use the Inflation Calculator now, or continue for the formula and a worked example.

How this is worked out

Inflation reduces what your money can buy over time. This tool helps you see the future cost of a current expense.

The formula behind it:

Future Cost = Present Cost * (1 + inflation)^years
Symbol What it means
Present Cost Today's Cost
inflation Annual Inflation Rate

Nothing is rounded away quietly and nothing is assumed on your behalf. If a figure appears in the result, it came from something you entered.

A worked example you can follow

₹10 Lakh today will need ~₹24 Lakh in 15 years at 6% inflation.

Change any one input and watch the result move — that sensitivity is the real lesson. It is far more useful than memorising a single outcome, because your own rate, tenure or contribution will never match the example exactly.

Using the Inflation Calculator, step by step

  1. Open the Inflation Calculator.
  2. Enter your figures. Use the ones on your statement, sanction letter or scheme document rather than a remembered number.
  3. Read the result card — the headline figure plus the breakdown that produced it.
  4. Adjust one input at a time to see what genuinely moves the outcome.
  5. Tap Download PDF to keep a copy of the calculation, with your inputs and assumptions printed on it.

The PDF takes a few seconds to build because it is a properly typeset report, not a screenshot. You will see a progress message while it is being prepared, and the download starts on its own.

Practical pointers

  • Use 6-7% as a realistic long-term inflation rate for India.
  • Inflation is an assumption based on historical data.

Common mistakes worth avoiding

  • Ignoring inflation in long-term retirement planning.

If you want to go a level deeper afterwards, read up on understanding inflation. Both come up the moment you start comparing options seriously.

Interactive calculator

Try the Inflation Calculator

Enter your own figures below. The same calculator and PDF report remain available on the focused calculator page.

6%

*Inflation rate is an assumption based on historical trends.

%
Yrs

Future Cost

₹4,17,265

Present Value

₹10,00,000

Purchasing Power Red.

₹23,96,558

Portfolio Mix

Invested
Returns

Growth Curve

Visual graph available for compounding tools

You invest ₹10,00,000 every month for 15 years. At an estimated 12% annual return, your total investment is ₹10,00,000 and the estimated total value is approximately ₹4,17,265. Around ₹23,96,558 represents estimated growth.

Next Architectural Steps

Open the full calculator

What else you will find on VIA Capital

The calculator is one corner of a much bigger free toolkit. While you are here:

New tools and sections go live regularly, and each one gets written up here the same way.

Questions people ask us

Is the Inflation Calculator free to use? Yes. Every calculator on VIA Capital is free, works without a login, and nothing you type is stored on our servers.

How accurate is it? The arithmetic is exact — it is the formula shown above, nothing hidden. Accuracy of the answer depends on your inputs. Rates, tenures and charges change, so use the figures from your own statement or sanction letter rather than a number you remember.

Can I save or share the result? You can download a formatted PDF report of your calculation and share it with your family, your CA or your bank. The download link sits right under the result.

Does it work on a phone? It does. The inflation calculator is built mobile-first, which is how most people in India actually search for "inflation".

Is this investment advice? No. VIA Capital is an education platform. We show you the maths and the assumptions; the decision, and the responsibility for it, stays with you. For anything personalised, speak to a SEBI-registered professional.

The short version

Calculate the future cost of goods and purchasing power reduction. The formula is public, the assumptions are printed on the page, and the calculation is yours to keep as a PDF.

👉 Run your own numbers in the Inflation Calculator

VIA Capital publishes financial education only. Nothing here is investment advice or a personalised recommendation, and no calculator output should be treated as a promise of returns.

Educational content only. Educational content only. Not investment advice or a personalised recommendation.

Written by

Abhishek sharma

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