Inflation Calculator
See what today's money will actually buy years from now, and what the same lifestyle will cost once inflation has done its work.
Year-wise impact of inflation
| Year | Cost of the same expense | Value of today's money |
|---|---|---|
| 1 | ₹1,06,000 | ₹94,340 |
| 2 | ₹1,12,360 | ₹89,000 |
| 3 | ₹1,19,102 | ₹83,962 |
| 4 | ₹1,26,248 | ₹79,209 |
| 5 | ₹1,33,823 | ₹74,726 |
| 6 | ₹1,41,852 | ₹70,496 |
| 7 | ₹1,50,363 | ₹66,506 |
| 8 | ₹1,59,385 | ₹62,741 |
| 9 | ₹1,68,948 | ₹59,190 |
| 10 | ₹1,79,085 | ₹55,839 |
What is Inflation and How Does It Erode Wealth?
Inflation is the persistent, compound increase in the general price level of goods and services across an economy over time. While investment returns build wealth through positive compounding, inflation operates as a silent, continuous "negative compound interest" working against your cash savings and living expenses. As inflation advances, every unit of currency buys a smaller quantity of goods and services.
In India, where consumer price inflation (CPI) has historically averaged around 5% to 7% per annum, the cost of living doubles roughly every 10 to 14 years. A comfortable household budget of ₹50,000 per month today will require over ₹1,60,000 per month in 20 years just to maintain the exact same standard of living.
Two Sides of the Same Coin: Future Cost vs Real Purchasing Power
This calculator evaluates the impact of inflation through two complementary mathematical lenses:
- Future Cost Projection: Calculates what a specific expense or financial goal today (such as college education, medical procedures, or monthly grocery bills) will cost in nominal rupees after a given number of years.
- Purchasing Power Depreciation: Calculates what a fixed lump sum of cash sitting today will actually be worth in terms of "real purchasing power" after compounding inflation discounts its utility.
The Inflation Compounding Formulas
Future Cost = Amount × (1 + i)ⁿ · Real Value = Amount ÷ (1 + i)ⁿ
- Amount: Current value of expense or cash savings in today's rupees (in ₹)
- i: Annual inflation rate expressed as a decimal (e.g., 6% = 0.06)
- n: Time horizon in years
- Purchasing Power Lost: Current Amount − Real Value (in ₹)
- The Rule of 70: Number of years for money's purchasing power to halve ≈ 70 ÷ Inflation Rate %
Worked example: ₹1,00,000 at 6% Inflation Over 10 Years
Consider an expense or savings balance of ₹1,00,000 today subjected to a steady 6% annual inflation rate over a 10-year horizon:
- Current Amount: ₹1,00,000
- Future Cost of the Same Goods: ₹1,00,000 × (1.06)¹⁰ = ₹1,79,084.77
- Purchasing Power of Today’s ₹1,00,000 in 10 Years: ₹1,00,000 ÷ (1.06)¹⁰ = ₹55,839.48
- Real Purchasing Power Destroyed: ₹1,00,000 − ₹55,839.48 = ₹44,160.52 (44.16% purchasing power eroded)
To buy goods that cost ₹1 lakh today, you will need nearly ₹1.8 lakh in a decade. Conversely, leaving ₹1 lakh in cash loses over 44% of its economic value.
The Cumulative Erosion of ₹1,00,000 at 6% Annual Inflation
| Year Milestone | Future Cost of Same Expense | Real Purchasing Power of ₹1 Lakh | Cumulative Purchasing Power Lost |
|---|---|---|---|
| Year 1 | ₹1,06,000.00 | ₹94,339.62 | 5.66% lost |
| Year 3 | ₹1,19,101.60 | ₹83,961.93 | 16.04% lost |
| Year 5 | ₹1,33,822.56 | ₹74,725.82 | 25.27% lost |
| Year 10 | ₹1,79,084.77 | ₹55,839.48 | 44.16% lost |
| Year 15 | ₹2,39,655.82 | ₹41,726.51 | 58.27% lost |
| Year 20 | ₹3,20,713.55 | ₹31,180.47 | 68.82% lost |
| Year 25 | ₹4,29,187.07 | ₹23,299.86 | 76.70% lost |
| Year 30 | ₹5,74,349.12 | ₹17,411.01 | 82.59% lost |
Sectoral Inflation: Education and Healthcare Divergence
A vital personal finance insight is that headline CPI does not equal your personal inflation rate. While food and energy inflation may fluctuate near 4% to 6%, specialized services experience much higher structural inflation:
- Higher Education Inflation: College tuition fees, professional coaching, and overseas education costs in India have historically compounded at 10% to 12% per annum.
- Healthcare & Medical Inflation: Hospitalization, advanced treatments, diagnostic procedures, and health insurance premiums compound at 12% to 14% per annum.
- Financial Planning Implication: When planning for children's education or post-retirement medical funds, using a general 6% inflation assumption will leave your targets severely underfunded.
How to Beat Inflation: Real vs Nominal Returns
To build wealth, your investments must generate a positive Real Rate of Return after adjusting for inflation and taxes:
$$ ext{Real Return} approx ext{Nominal Post-Tax Return} - ext{Inflation Rate}$$
If a bank fixed deposit earns 7% interest and your marginal tax rate is 30%, your post-tax nominal return is 4.9%. With inflation at 6%, your real return is −1.1% per year—your wealth is quietly shrinking in real terms. Only growth assets like diversified equity mutual funds, index funds, and quality real estate have historically delivered post-tax real returns of 5% to 8% above inflation over long horizons.
Frequently Asked Questions on Inflation
Key insights into planning assumptions, real returns, sectoral inflation, and hedging strategies.
The Reserve Bank of India (RBI) operates with a target inflation rate of 4% within a ±2% tolerance band (2% to 6%). For long-term general financial planning, assuming a conservative 6% inflation rate is prudent. For education and healthcare goals, plan with a higher rate of 10% to 12%.
They represent the two sides of inflation: (1) "Future Cost" shows what an expense will cost in the future, helping you determine how much money you need to accumulate for a goal. (2) "Purchasing Power" shows what a fixed cash sum today will buy in the future, illustrating the danger of keeping idle money in low-yield accounts.
If an FD offers 7% interest and you are in the 30% tax slab, your post-tax return is 4.9%. With inflation running at 6%, your real purchasing power shrinks by 1.1% each year. While your account balance grows in nominal rupees, the basket of goods it buys becomes smaller.
Headline CPI measures a national average basket where food constitutes nearly 46%. Urban middle-class households typically spend a much higher proportion of income on private school fees, rent, domestic fuel, tech gadgets, and medical care—categories that experience significantly steeper price increases than staple food grains.
Diversified equities and equity mutual funds have historically generated 12%–15% annualized returns, beating 6% inflation by 6%–9% over 10+ year periods. Real estate and physical gold have also historically acted as effective long-term hedges against currency depreciation.
CPI (Consumer Price Index) measures retail price changes paid by end-consumers for goods and services, reflecting cost-of-living changes. WPI (Wholesale Price Index) measures price movements at the wholesale, factory-gate, and producer level for physical goods only, excluding services.
Retirees on fixed non-indexed pensions suffer severe loss of living standards. At 6% inflation, a ₹40,000 monthly pension loses half its purchasing power within 12 years. This is why a retirement corpus must be invested in growth assets to generate inflation-linked cash flows via SWP.
The Rule of 70 is a mental shortcut to calculate how many years it takes for your money’s purchasing power to be cut in half: divide 70 by the inflation rate. At 7% inflation, your money loses half its buying power in just 70 ÷ 7 = 10 years.
The RBI controls inflation primarily through monetary policy: adjusting the Repo Rate (the rate at which banks borrow from RBI). Raising repo rates makes borrowing costlier and curbs money supply to dampen inflation, while lowering rates stimulates economic growth.
Yes. Sovereign Gold Bonds track domestic gold prices (which historically hedge currency debasement) while providing an additional 2.50% annual simple interest. Furthermore, capital gains upon sovereign maturity (8 years) are 100% tax-free for individual investors.