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Inflation Calculator
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The inflation calculator computes how rising price levels erode purchasing power over time using the formula: Future Value = Present Value × (1 + i)^n, where i is the annual inflation rate and n is years. At 6% average annual inflation, ₹1,00,000 today requires ₹1,79,085 in 10 years to purchase the exact same basket of goods.
See how inflation erodes your purchasing power over time.
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How Does Inflation Erode Purchasing Power Over Time?
Pick ₹, $, € or £ in the calculator — it changes the symbol and number format, not the amounts.
Future Cost vs. Purchasing Power Decay:
• Future Equivalent Cost: Shows what a basket of goods priced at a certain amount today will cost in the future:
Future Cost = Present Amount × (1 + r)^n.• Purchasing Power of Cash: Shows what a fixed uninvested sum today will buy in the future in today's terms:
Real Value = Present Amount / (1 + r)^n.The Silent Drag on Liquid Cash: Holding excessive cash reserves in low-yielding checking accounts guarantees purchasing power erosion over extended periods. For example, sustained 6% annual inflation halves the real buying power of uninvested capital in roughly 12 years. Incorporating inflation into long-term financial goal planning ensures future savings targets reflect realistic future prices.
Worked Example:
1. Initial Capital: ₹1,00,000.
2. Average Annual Inflation Rate: 6.0%.
3. Time Horizon: 15 years.
4. Future Cost of Equivalent Goods: ₹2,39,655.82 [₹1,00,000 × (1.06)^15].
5. Cumulative Price Increase: +139.66%.
6. Real Purchasing Power of Fixed ₹1,00,000 Cash: ₹41,726.51 [₹1,00,000 / (1.06)^15].
7. Purchasing Power Lost: 58.27% of initial value lost.
The Inflation Calculator projects future living costs, cumulative price increases, and the erosion of cash purchasing power over multi-year periods based on compound inflation.
Definition: Purchasing Power Decay
The decrease in the volume of goods and services that can be purchased with a fixed sum of currency as price levels rise over time.
What Inflation Rates, Tenures, and Equivalent Amounts Are Computed?
Required Inputs
- Initial AmountThe starting sum of money or the baseline price of goods today.
- Annual Inflation Rate (%)The projected average annual percentage increase in consumer prices.
- Duration (Years)The number of years over which inflation is modeled.
- Currency SelectorPick ₹, $, € or £ — it changes the symbol and number format, not the amounts.
Expected Outputs
- Future Equivalent CostWhat you will need to pay in the future to purchase the same standard of goods.
- Future Purchasing PowerThe real purchasing value of your uninvested initial cash sum in the future.
- Cumulative Inflation %The total aggregate percentage rise in prices over the timeframe.
- Purchasing Power Decay ChartVisual curve showing price increases and purchasing power decline.
Who Uses the Inflation Calculator?
Retirement Target Planning
Calculate how much your current monthly household expenditure may increase over 20 or 30 years.
Education Expense Projections
Forecast future tuition and university expenses that compound over long horizons.
Evaluating Fixed Return Instruments
Determine whether fixed-deposit interest rates provide a positive real return after inflation.
Wage and Salary Benchmarking
Check whether annual salary adjustments keep pace with rising living costs.
How Do You Calculate Future Purchasing Power and Price Changes?
- 1Select your currency symbol (₹, $, €, or £) using the selector.
- 2Enter your starting monetary sum in 'Initial Amount'.
- 3Input your expected annual inflation rate.
- 4Set your time horizon in years.
- 5Review the projected future cost, remaining purchasing power, and cumulative percentage change.
Frequently Asked Questions
What is the difference between headline inflation and real purchasing power?
Headline inflation measures the percentage rise in the cost of goods. Purchasing power reflects how much less a fixed dollar or rupee amount will buy as prices rise.
How can savings be protected against inflation?
To preserve real value, savings can be allocated into assets that have historically delivered returns above inflation over long periods, such as diversified index funds or real estate.
Why does small inflation cause large price changes over time?
Inflation compounds annually: each year's price increase is calculated on top of all previous increases, resulting in exponential price growth over multi-decade spans.