Have you ever wondered why the same ₹100 buys less today than it did years ago? The reason is inflation.
Inflation means that the prices of goods and services generally increase over time. As prices rise, the purchasing power of money falls.
To understand how powerful inflation can be, let’s take a simple example: ₹100.
What happens to ₹100 with 8% inflation?
Suppose inflation remains at 8% every year. Something that costs ₹100 today would cost approximately:
- After 1 year: ₹108
- After 5 years: ₹146.93
- After 10 years: ₹215.89
- After 15 years: ₹317.22
- After 20 years: ₹466.10
- After 25 years: ₹684.85
- After 30 years: ₹1,006.27
This means that if prices increased by 8% every year for 30 years, something costing ₹100 today could cost roughly ₹1,006 in the future.
That’s more than ten times the original price.
Your ₹100 doesn’t disappear
Inflation does not mean your ₹100 physically loses money.
If you keep ₹100 in cash, you will still have ₹100 after 10 or 20 years.
The problem is what that ₹100 can buy.
At 8% annual inflation, the purchasing power of ₹100 after 10 years would be equivalent to only about ₹46.32 in today’s money.
After 20 years, its purchasing power would be about ₹21.46.
After 30 years, it would be only about ₹9.94 in today’s purchasing power.
This is why inflation is important when thinking about long-term financial goals.
Why small inflation becomes a big number
The reason the numbers grow so quickly is compounding.
Each year’s price increase is calculated on the price from the previous year.
For example:
₹100 × 1.08 = ₹108 after one year.
The next year:
₹108 × 1.08 = ₹116.64.
After another year:
₹116.64 × 1.08 = ₹125.97.
The increases continue building on each other.
This is why an 8% annual inflation rate doesn’t simply mean prices rise by 8 × 30 = 240% over 30 years. The actual effect is much larger because of compounding.
What does this mean for your future?
Imagine you need ₹1 lakh today to pay for something important.
If that same expense increases at 8% annually, you could need approximately:
- ₹2.16 lakh after 10 years
- ₹4.66 lakh after 20 years
- ₹10.06 lakh after 30 years
The exact inflation rate will not remain the same every year in real life. Some years can have higher inflation and others lower inflation.
But the example shows why simply asking “How much money do I need today?” isn’t enough for a long-term financial plan.
You also need to consider how much that expense could cost in the future.
Inflation reduces purchasing power
The biggest lesson is simple:
Money has a time value.
₹100 today and ₹100 thirty years from now have the same face value, but they may have completely different purchasing power.
This is especially important for long-term goals such as buying a home, education, retirement, healthcare and other major expenses.
If your savings or investments grow more slowly than inflation over a long period, your money may lose purchasing power even though the number in your account increases.
The bottom line
An annual inflation rate of 8% may sound like just one percentage figure, but over several decades its effect can be enormous.
At that rate, ₹100 today could require about ₹1,006 after 30 years to buy the same amount of goods and services.
That’s why understanding inflation is important whenever you think about your future expenses.
The goal isn’t simply to have more rupees in the future. The goal is to have enough purchasing power to afford what you will need.
Note: The figures in this article are mathematical illustrations assuming a constant 8% annual inflation rate. Actual inflation varies over time.
