The Case for Index Funds
Index funds track a market benchmark (like Nifty 50 or Sensex) passively, without a fund manager making active stock-picking decisions. Their key advantages are compelling:
- Expense ratio: 0.05% – 0.20% vs 0.5% – 2.5% for active funds
- Predictable returns that mirror market performance
- No fund manager risk — no style drift, no key-person dependency
- Tax efficiency due to low portfolio turnover
The Sobering Data
SEBI's SPIVA India report for 2024 shows that 78% of large-cap active funds underperformed the Nifty 100 TRI over a 5-year period. The primary reason: high expense ratios eat into returns before you see them.
A 1% expense ratio difference compounded over 20 years on ₹10 lakh grows to a ₹6.7 lakh difference in final corpus.
Where Active Funds Still Win
The picture changes for mid-cap and small-cap categories. Here, active fund managers with local market knowledge have generated meaningful alpha over benchmarks. Top mid-cap active funds have outperformed their benchmark index by 3–5% CAGR over 10 years.
| Category | Active Outperformance Rate (10Y) | Average Alpha |
|---|---|---|
| Large Cap | 22% | -0.8% |
| Mid Cap | 58% | +2.1% |
| Small Cap | 61% | +3.4% |
| Flexi Cap | 44% | +0.6% |
The Optimal Strategy
Use index funds for your large-cap core (60% of equity allocation) and carefully selected active funds for your mid/small-cap satellite (40%). This "Core-Satellite" approach maximises cost efficiency while capturing available alpha.