1. What is CAGR?
CAGR stands for Compound Annual Growth Rate. It's the rate at which your investment would have grown if it grew at a steady rate every year, compounded annually.
It's the single number that lets you compare investments held for different periods on a like-for-like basis.
💡 CAGR formula: (Final Value ÷ Initial Value)(1 ÷ Years) − 1
2. CAGR vs. absolute return
Absolute return is simple: (Final − Initial) ÷ Initial × 100. It ignores how long you held the investment.
CAGR accounts for time. Two investments with the same absolute return but different holding periods have very different CAGRs.
| Investment | Absolute return | Holding period | CAGR |
|---|---|---|---|
| ₹1L → ₹2L | 100% | 5 years | 14.87% |
| ₹1L → ₹2L | 100% | 10 years | 7.18% |
| ₹1L → ₹1.5L | 50% | 5 years | 8.45% |
Notice how the same 100% absolute return is 14.87% CAGR over 5 years but only 7.18% over 10 years. Always use CAGR for periods over 1 year.
3. Real CAGR vs. nominal CAGR
Nominal CAGR is what you see. Real CAGR accounts for inflation:
Real CAGR = ((1 + Nominal CAGR) ÷ (1 + Inflation)) − 1
A 12% nominal CAGR with 6% inflation gives a real CAGR of about 5.66%. That's the actual growth in your purchasing power.
4. Using CAGR to compare investments
CAGR lets you compare any two investments fairly:
| Investment | Period | Absolute | CAGR |
|---|---|---|---|
| Stock A | 3 years | 60% | 16.96% |
| Mutual Fund B | 5 years | 90% | 13.74% |
| FD | 5 years | 35% | 6.19% |
Stock A has the highest CAGR despite a lower absolute return. That's because it achieved that return in a shorter time.
5. A worked example
You invested ₹5,00,000 in an equity fund 3 years ago. Today it's worth ₹8,00,000.
- Absolute return: (8,00,000 − 5,00,000) ÷ 5,00,000 = 60%
- CAGR: (8,00,000 ÷ 5,00,000)(1/3) − 1 = 16.96%
- Benchmark CAGR (say Nifty 50): 12%
- Alpha: 16.96% − 12% = +4.96%
- Real CAGR at 6% inflation: 10.34%
This investment is outperforming its benchmark by nearly 5% per year. Even after inflation, it delivered a real return of 10.34% — well above the benchmark.
✓ A 5% alpha over 10 years on a ₹5 lakh investment adds roughly ₹6.5 lakh to your final value — the entire original investment, twice over.
6. CAGR limitations
CAGR is powerful but has limits:
- Ignores volatility: A 12% CAGR fund could have had wild swings; another could have been steady. Same CAGR, very different risk profiles.
- Depends on start and end dates: Point-to-point CAGR can be misleading. Rolling CAGR is more reliable.
- Doesn't account for additional investments: CAGR assumes a single lumpsum. For SIPs, use XIRR.
- Taxes are ignored: Pre-tax CAGR isn't what you keep. Always look at post-tax CAGR.
7. Common mistakes to avoid
- Comparing different holding periods. Always compare like-to-like — 3-year CAGR to 3-year CAGR.
- Chasing high 1-year returns. An investment that returned 50% in one year may revert to the mean. Look at 3–5 year CAGR.
- Ignoring the expense ratio. A 1% higher expense ratio compounds against you over decades.
- Not comparing to the right benchmark. A mid-cap fund should be compared to Nifty Midcap, not Nifty 50.
- Ignoring risk. A higher CAGR with higher volatility may not suit your profile.
8. Final thoughts
CAGR is the most important metric for evaluating investments over periods longer than one year. It normalises time and makes comparisons meaningful.
Use this calculator to see your CAGR and how it compares to a benchmark. Then look beyond CAGR — check the expense ratio, fund manager track record, and consistency over market cycles.
