Inflation Calculator

Romik Amreliya

See the future cost of money and how inflation erodes what your savings can buy.

Current Amount (₹)

Annual Inflation Rate (%)

Number of Years

How to Use the Inflation Calculator

Inflation quietly shrinks the value of money over time. This tool shows both sides of that coin — how much more things will cost in the future, and how much less your money will be able to buy. To use it:

Enter the Current Amount: The sum of money you want to analyse in today's rupees.
Enter the Annual Inflation Rate: Your expected average yearly inflation (India has historically averaged around 6%).
Enter the Number of Years: How far into the future you want to project.
Read the Results: See the future cost, the real purchasing power of that amount, and the total cumulative inflation over the period.

What Inflation Does to Your Money

Inflation is the steady rise in the general price level. A positive inflation rate means every rupee buys a little less each year. Two useful lenses:

Future Cost answers: "How much will something that costs ₹X today cost in N years?"
Purchasing Power answers: "If I keep ₹X in cash, how much will it actually be worth (in today's prices) after N years?"

The Formula

Future Cost = Present Amount × (1 + i)ⁿ

Purchasing Power = Present Amount ÷ (1 + i)ⁿ

i = annual inflation rate (as a decimal) · n = number of years

Worked Example

Example: ₹1,00,000 at 6% Inflation for 10 Years

Step 1: Inflation factor = (1 + 0.06)¹⁰ = 1.7908

Step 2 — Future cost: ₹1,00,000 × 1.7908 = ₹1,79,085 (what ₹1,00,000 of goods will cost)

Step 3 — Purchasing power: ₹1,00,000 ÷ 1.7908 = ₹55,839 (what your ₹1,00,000 cash will actually buy)

Result: Cumulative inflation is 79.1%, and idle cash loses about ₹44,161 of real value over the decade.

How Purchasing Power Erodes Over Time

The chart below tracks the real value of ₹1,00,000 held as cash, eroding at 6% inflation. The decline compounds — the longer money sits idle, the faster its buying power falls.

At 6% inflation, ₹1,00,000 in cash is worth just ₹17,411 in today's money after 30 years.

Purchasing Power by Inflation Rate

The rate matters enormously. Here is what ₹1,00,000 will be worth after 10 years at different inflation rates:

Inflation rate	Value after 10 years	Purchasing power lost
4%	₹67,556	₹32,444
6%	₹55,839	₹44,161
8%	₹46,319	₹53,681
10%	₹38,554	₹61,446

How to Protect Yourself From Inflation

Don't hold too much idle cash: Money sitting in a low-interest account loses real value every year inflation runs above your interest rate.
Aim for real returns: Your investment return must beat inflation to actually grow wealth. A 6% return with 6% inflation is zero real growth.
Review long-term goals in real terms: A ₹1 crore retirement target may buy far less in 25 years — plan the goal in today's purchasing power.
Revisit assumptions: Inflation is not constant. Re-run your numbers when the economic outlook changes.

Frequently Asked Questions

Inflation is the rate at which the general price level rises over time, which means each rupee buys less than before. If prices rise 6% a year, something costing ₹100 today costs ₹106 next year, so idle cash steadily loses purchasing power.

Future Cost = Present Amount × (1 + inflation rate) raised to the number of years. For example, ₹1,00,000 at 6% inflation for 10 years becomes ₹1,00,000 × 1.06^10 ≈ ₹1,79,085.

Purchasing power is what a fixed amount of money can actually buy. As inflation rises, purchasing power falls. ₹1,00,000 today, at 6% inflation, will only buy about ₹55,839 worth of goods in 10 years, expressed in today's prices.

Long-term consumer inflation in India has averaged roughly 5 to 7 percent. For planning, 6% is a common assumption, but you can enter any rate. Check the latest CPI data from the RBI or MOSPI for current figures.

To grow real wealth, your investment return must beat inflation. A savings account paying 4% while inflation is 6% actually loses 2% of purchasing power each year, which is why long-term money is often invested in assets expected to outpace inflation.

RA

Written & Reviewed by Romik Amreliya

Last reviewed: July 2026 · Reviewed for: formula accuracy & up-to-date guidance

Software Engineer & Data Analyst. Dedicated to building precise, privacy-first web calculators based on standardized financial and medical algorithms. All tools and content undergo rigorous testing against industry-standard benchmarks.

Connect on LinkedIn

Sources & References:

Investopedia - Financial education, formulas, and terminology definitions.
Standard banking amortization formulas for compound interest and loan schedules.
Consumer Financial Protection Bureau (CFPB) - Guidelines on credit cards, mortgages, and personal loans.
Calculations are based on universally accepted financial mathematics; actual rates may vary by institution.

Sources & References

Reserve Bank of India (RBI): Consumer Price Index & inflation data
Ministry of Statistics (MOSPI): Official CPI and inflation statistics

Financial Disclaimer: This inflation calculator is provided for educational and informational purposes only. It uses a constant assumed inflation rate; actual inflation varies year to year and by category of spending. Results are estimates and do not constitute financial advice. Consult a qualified financial advisor for personal planning.