I asked AI can inflation reduce the gains from compounding? Here’s what it says
I asked ChatGPT how does inflation affect the benefits of compounding? Show how my ₹50 lakh (lump sum) investment in mutual funds will grow over 20 years and also what will be its inflation-adjusted value.
Can inflation reduce the gains from compounding?
Inflation doesn’t stop compounding—it competes with it.
Your investment may grow substantially in rupee terms, but inflation reduces what those future rupees can actually buy. That’s why it’s important to look at both:
Nominal value: The actual corpus shown by the fund
Real value: The inflation-adjusted purchasing power
What is the math behind it?
Let’s assume:
- Lump sum investment = ₹50 lakh
- Investment horizon = 20 years
- Mutual fund return = 12% annually
- Inflation = 6% annually
Step 1: Calculate future value of ₹50 lakh
The compound interest formula is:
FV=PV(1+r)n
Where: FV = Future Value, PV = ₹50,00,000, r = 12% = 0.12, n = 20 years
Nominal value: ₹50,00,000 × (1.12)^20 = ₹50,00,000 × 9.646 ≈ ₹4.82 crore
So, after 20 years, your ₹50 lakh could become approximately ₹4.82 crore.
Step 2: Adjust for inflation
To find today’s purchasing power of that future corpus:
Real Value = Future Value/(1+i)n
Where: Future Value = ₹4.82 crore, Inflation (i) = 6% = 0.06, n = 20 years
Inflation factor: (1.06)^20 = 3.207
Real Value: ₹4.82 crore ÷ 3.207 ≈ ₹1.50 crore
What this means
Although your investment statement may show ₹4.82 crore, its purchasing power would be roughly equivalent to ₹1.5 crore today if inflation averages 6%.
A simpler way: Use the real return
Instead of calculating growth and inflation separately, use the inflation-adjusted return:
Real Return = (1.12 ÷ 1.06) − 1 ≈ 5.66%
Then: ₹50 lakh × (1.0566)^20 ≈ ₹1.50 crore
Key takeaway
- Without considering inflation: ₹50 lakh → ₹4.82 crore
- After adjusting for 6% inflation: ₹50 lakh → ₹1.5 crore (today’s purchasing power)
The good news is that compounding still wins. Even after inflation, your purchasing power roughly triples over 20 years ( ₹50 lakh → ₹1.5 crore in today’s money), provided the fund consistently earns around 12% annually.