Concept: Compounding
Compounding is earning returns on your returns. When profits are reinvested and themselves generate more profits, wealth grows exponentially rather than line...
What it is
Compounding is earning returns on your returns. When profits are reinvested and themselves generate more profits, wealth grows exponentially rather than linearly. Einstein (reportedly) called it the eighth wonder of the world.
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"Compounding matlab aapke profit ke upar bhi profit banna shuru ho jata hai. Jaise snowball — shuru mein chhota, baad mein bahut bada."
Why compounding matters for investing
The difference between 12% and 15% CAGR over 20 years is enormous:
| Initial investment | CAGR | Value after 20 years | Difference |
|---|---|---|---|
| ₹10 lakh | 12% | ₹96 lakh | — |
| ₹10 lakh | 15% | ₹1.64 crore | +₹68 lakh |
| ₹10 lakh | 20% | ₹3.83 crore | +₹2.87 crore |
A mere 3% extra return per year leads to 70% more wealth over 20 years. This is why quality companies with consistently high ROCE are so valuable — they compound capital internally.
The compounding formula
Future Value = Present Value × (1 + Rate)^Time
The two levers:
- Rate — higher returns accelerate compounding (hence the obsession with ROCE > 15%)
- Time — the longer you stay invested, the more powerful the effect becomes
How Indian companies compound
Real compounders in India
| Company | 20-year CAGR (stock) | What enabled compounding |
|---|---|---|
| Asian Paints | ~25% | Brand moat → pricing power → reinvestment at 30%+ ROCE |
| Bajaj Finance | ~40% (10-yr) | Network + data moat → AUM growth → 20%+ ROE sustained |
| TCS | ~18% | IT services switching cost → steady profit → buybacks + dividends |
| Pidilite | ~22% | Adhesives monopoly → 50%+ market share → reinvestment in adjacencies |
The enemies of compounding
What kills compounding
- Interruption — Selling winners too early breaks the compounding chain
- Capital destruction — A 50% loss requires a 100% gain just to recover (lost time)
- Dividend over-distribution — 80% payout leaves little for reinvestment
- Poor reinvestment — Acquisitions at low ROCE destroy the compounding engine
- Over-leverage — One bad cycle can wipe out years of compounding
The Rule of 72
Quick mental math: divide 72 by the annual return to find how many years it takes to double your money.
| Return | Doubling time |
|---|---|
| 8% (FD) | 9 years |
| 12% (Nifty average) | 6 years |
| 15% (quality stocks) | 4.8 years |
| 20% (great compounders) | 3.6 years |
| 26% (rare multi-baggers) | 2.8 years |
How to identify compounders (screening criteria)
A company is likely to compound if:
- ROCE > 15% sustained for 7+ years
- Revenue growth > 12% CAGR over 5 years
- Debt/Equity < 0.5 (funded by internal accruals)
- Promoter holding stable or increasing
- No major corporate governance issues
Related concepts
- Capital Allocation — How management reinvests determines compounding rate
- Economic Moats — Moats protect the high-ROCE engine
- Margin of Safety — Entry price determines your personal CAGR