Power of Compounding
What is it?
Compounding is earning returns not just on your original investment, but also on the returns it has already earned. Over long periods, this creates growth that accelerates rather than stays flat.
Why should you care?
Compounding is often called the strongest force in personal finance because it rewards time more than the amount invested — starting early, even with smaller amounts, can outperform starting late with larger ones.
Real-life example
Investing ₹5,000/month at an assumed 12% annual return grows to about ₹11.67 lakh after 10 years, ₹49.9 lakh after 20 years, and ₹1.78 crore after 30 years — the amount invested only triples from 10 to 30 years (₹6L → ₹18L), but the corpus grows over 10x, because later years' growth compounds on all the earlier growth.
Common mistakes
- Underestimating how much starting a few years earlier matters — delaying by even 5 years can shrink the final corpus dramatically.
- Withdrawing gains early or interrupting SIPs during market dips, which breaks the compounding chain.
- Expecting compounding to "kick in" immediately — the biggest gains from compounding show up in the later years, not the first few.
₹5,000/month SIP at 12% p.a. — invested amount vs corpus
| Years | Amount invested | Corpus (approx.) |
|---|---|---|
| 10 | ₹6,00,000 | ₹11,60,000 |
| 20 | ₹12,00,000 | ₹49,90,000 |
| 30 | ₹18,00,000 | ₹1,78,00,000 |
FAQ
Is compounding guaranteed?
No. Compounding describes how returns build on themselves mathematically, but market-linked investments like mutual funds don't guarantee a fixed return each year — actual growth varies with market performance.
Does compounding work with SIPs?
Yes. Each SIP instalment gets invested and starts earning its own returns, and those returns compound over the remaining investment horizon — the earlier instalments have the longest time to compound.
What's the single biggest lever for compounding?
Time. A longer investment horizon has a bigger impact on the final corpus than a slightly higher return rate or a slightly larger contribution, because compounding's effect accelerates in later years.
Does compounding apply to debt too?
Yes, but in reverse — unpaid interest on loans or credit card dues also compounds, which is why high-interest debt can grow quickly if not paid down.
See this concept applied to your own portfolio
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