Inflation Calculator

Last updated: Jul 22, 2026 | Reviewed by Calkulator Team | 2 min read

Investment

See how inflation silently erodes your purchasing power

At 6% inflation, ₹1 lakh today will buy only ₹55,839 worth of goods in 10 years. Your investments must beat inflation to grow in real terms — an 8% FD with 6% inflation gives only 2% real return.

Invest in equity for long-term goals — it is the only asset class that consistently beats inflation over 10+ years.

tuneAdjust Inputs
Current Amount

                        ₹
                        
                    
≈ 1 Lakh
Annual Inflation Rate
                            
                            % p.a.
                        
1%15%
Time Period
                            
                            Years
                        
1 yr30 yrs
Investment Return (optional)
                            
                            % p.a.
                        
0%20%
Future Cost (Same Value)
₹1,79,085
≈ 1.79 Lakh after 10 years
Purchasing Power Today
₹55,839
Real value of ₹1L in 10 yrs
Today's Amount
₹1,00,000
Current value
Value Lost to Inflation
₹44,161
44.2% purchasing power lost
Inflation Rate
6% p.a.
Annual CPI inflation
Real Return (After Inflation)
5.66% p.a.
Beating inflation
Lost
44.2%

                                    Purch. Power Retained
                                    ₹55,839
                                

                                    Value Lost
                                    ₹44,161
                                
functions Inflation FormulaeFuture Cost = P — (1 + inf/100)n
Purch. Power = P / (1 + inf/100)n
Real Return = ((1+r)/(1+inf) - 1) — 100

Live Result Illustration

Visual summary — updates instantly as you enter values above

LIVE

Real-Life Guide to Using the Inflation Calculator

Real value of money over time. Use the examples and checks below to turn the number into a practical decision.

When this calculator is useful

Use this to see how much everyday costs — school fees, a car, a wedding budget — will rise over time, or conversely how much today's ₹10,00,000 in savings will really be worth 15-20 years from now after prices rise.

For most people, the best way to use the Inflation Calculator is to try the real case first, then change one input at a time. That makes the trade-off visible. For example, with a loan calculator you can change tenure while keeping the same rate; with an investment calculator you can change return assumption while keeping the same monthly contribution; with a health, education or measurement calculator you can check how much one input changes the final category.

The result should answer a practical question: Can I afford this? How much should I save? Is this score enough? Is this measurement within range? What is the safer or cheaper option? If the output does not answer the decision clearly, adjust the inputs until the scenario matches your real situation.

Real-Life Example

Cost of an item 20 years from now: A parent wants to know what a ₹10,00,000 education expense today will cost when their newborn is ready for college in 20 years.

1Future cost = 10,00,000 × (1.06)^20 ≈ ₹32,07,100 at an assumed 6% annual inflation rate — meaning the same basket of expenses that costs ₹10 lakh today will need roughly ₹32 lakh in 20 years just to maintain the same purchasing power.

2Now change one input, such as rate, time, quantity, unit or score, and compare the new result with the first one.

Money that merely sits still loses roughly two-thirds of its purchasing power over two decades at typical inflation, which is why a savings goal must be set in future rupees, not today's rupees.

Practical Advice

Use the Inflation Calculator as a planning tool, not just a number generator. Write down the inputs you used, because the final answer is meaningful only when you remember the assumptions behind it.

If the decision affects money, health, tax, safety, academics or legal compliance, keep a second check ready. That second check may be a bank quote, payslip, official rule, prescription, site measurement, mark sheet or invoice.

Common Mistakes

Using a single flat inflation rate (like 6%) for every category of expense, when education and healthcare inflation in India have historically run well above general CPI inflation, sometimes into double digits.
Confusing "future cost" with "future value of savings" — these use the same formula in opposite directions, and mixing them up leads to planning for the wrong number.
Assuming a fixed deposit or savings account return automatically beats inflation, when a 6.5% FD return against 6% assumed inflation leaves almost no real growth after tax on the interest.
Not revisiting the inflation assumption periodically — using a rate assumed a decade ago for a goal that is still 10 years away, instead of updating the estimate over time.
Applying inflation to a goal amount but forgetting to also inflation-adjust the corresponding SIP or savings plan meant to fund it, so the savings plan under-shoots the real future cost.

How to Interpret Results

Read the "future cost" output as the rupee amount you will actually need to arrange by that date, and the "real value" output as what your current savings would be worth in today's purchasing power — these are two different questions the same tool can answer.

A good interpretation looks at both the main result and the supporting values. If a page shows totals, ratios, categories, schedules or warnings, read those together instead of focusing only on the biggest number.

Inflation Calculator FAQs

Useful answers for interpreting the output, avoiding mistakes and using the result responsibly.

What is the formula this calculator uses?

For future cost it uses FV = Present Amount × (1 + inflation rate)^number of years; for real value of a future or current amount, it divides by the same factor instead of multiplying, i.e. Real Value = Amount / (1 + inflation rate)^years.

What inflation rate should I actually use?

There is no single correct number — general consumer inflation in India has historically averaged in the 5-7% range over long periods, but this varies year to year, so treat any rate you enter as an illustrative assumption and consider running the calculator at more than one rate.

Should I use the same inflation rate for education, medical, and general living costs?

No — education and healthcare costs in India have often risen faster than general CPI inflation historically, so if your goal is specifically for one of these, consider entering a higher assumed rate for that goal than you would for general expenses.

How is this different from calculating "real return" on an investment?

Real return combines two rates — your investment's growth rate and inflation — using the approximate relationship Real Return ≈ Investment Return – Inflation Rate; this calculator handles the inflation side alone, so pair its output with your investment calculator's return figure to estimate real return.

Why does inflation-adjusted retirement planning need such large future numbers?

Because expenses compound upward every year just as investments compound upward, a retirement corpus target must be set using the future cost of living at retirement age, not current living costs, or the corpus will fall short by the time it is actually needed.

Can inflation be negative in this calculator?

Technically yes if you enter a negative rate to model deflation, but sustained deflation is uncommon in the Indian context, so this is mainly useful for stress-testing rather than realistic planning.

Does this account for the fact that my income might also grow over time?

No, the calculator only adjusts a fixed amount for inflation; if you want to factor in rising income or contributions, use the step-up feature on the SIP calculator alongside this tool's cost projections.

How often should I recheck an inflation-adjusted goal I set years ago?

It is worth revisiting every 2-3 years or after any major life change, since actual inflation for your specific goal (school fees, healthcare) may have run higher or lower than your original assumption, and the target amount should be updated accordingly.

How Inflation Erodes Purchasing Power

Inflation erodes the purchasing power of money over time. Something that costs ₹1,000 today may cost ₹1,791 in 10 years at 6% annual inflation. Planning without accounting for inflation leads to a significant savings shortfall at retirement.

This calculator shows the future cost of today's expenses, the real value of your money after N years, and how much extra return you need to beat inflation on your investments. The Real Return figure is crucial: if your FD earns 7% but inflation is 6%, your real return is only about 0.94% per year.

Example Calculation

Scenario: ₹1 lakh today at 6% inflation for 10 years

1Future Cost = 1,00,000 — (1.06)^10 = ₹1,79,085

2Purch. Power = 1,00,000 / (1.06)^10 = ₹55,839

3Real Return (12% invest) = (1.12/1.06)-1 = 5.66%

✓ ₹1L today buys what ₹55,839 will buy in 10 years — 44% purchasing power lost

Frequently Asked Questions

Inflation and purchasing power explained for financial planning

What inflation rate should I use for long-term financial planning?

India's CPI inflation has averaged around 5�7% over the past decade, with a long-term RBI target of 4% (�2% tolerance band). For conservative planning, use 6�7%. For education or healthcare expenses — which inflate faster than general CPI — use 8�10%. Always err on the higher side to avoid undersaving.

How does inflation affect fixed deposits?

FD interest rates in India typically range from 6�8%, while inflation is 5�7%. After tax on FD interest (30% for the highest bracket), your post-tax FD return may be 4.2�5.6% — often below or barely above inflation. This means FDs may not grow your real wealth; they primarily preserve capital. For long-term goals, equity investments with higher real returns are necessary.

Why is the "Rule of 72" useful for understanding inflation?

Divide 72 by the inflation rate to estimate how many years it takes for prices to double. At 6% inflation, prices double in 72/6 = 12 years. At 8%, they double in 9 years. If retirement is 24 years away at 6% inflation, prices will quadruple — your retirement corpus must be 4� your current estimate of expenses.

See how inflation silently erodes your purchasing power

functions Inflation Formulae