What is a Mutual Fund?
A mutual fund is a pool of money collected from thousands of investors, professionally managed by a fund manager, and invested in a diversified portfolio of stocks, bonds, or other securities. Each investor owns units of the fund proportional to their investment. The fund's gains, losses, and income are shared proportionally.
In India, mutual funds are regulated by SEBI and managed by Asset Management Companies (AMCs) like SBI Mutual Fund, HDFC Mutual Fund, Nippon India, Kotak, Axis, and Mirae Asset.
What is NAV?
NAV (Net Asset Value) is the per-unit price of the mutual fund. It is calculated daily after market close:
- NAV = (Total Assets − Liabilities) / Number of Units Outstanding
When you invest ₹10,000 in a fund with NAV ₹200, you get 50 units. When NAV rises to ₹250, your investment is worth ₹12,500. A higher NAV doesn't mean the fund is expensive — it simply means the fund is older and has grown. Always evaluate funds by returns, not NAV level.
SEBI's Mutual Fund Categories
SEBI mandated a rationalisation of fund categories in 2018. Key equity fund categories:
- Large-Cap Fund: Minimum 80% in top 100 companies. Lower risk, stable returns.
- Mid-Cap Fund: Minimum 65% in 101–250 ranked companies. Higher growth, more volatile.
- Small-Cap Fund: Minimum 65% in 251+ ranked companies. Highest risk/return.
- Flexi-Cap Fund: No market-cap restriction. Manager allocates freely. Popular category.
- ELSS (Tax-Saving Fund): 80% equity minimum, 3-year lock-in, ₹1.5 lakh tax deduction under Section 80C.
- Index Fund/ETF: Passively tracks an index (Nifty 50, Sensex, Nifty Next 50). Zero fund manager risk, very low expense ratio (0.1–0.2%).
Equity vs Debt vs Hybrid Funds
- Equity Funds: Invest primarily in stocks. Higher long-term returns (10–15% CAGR historically), higher short-term volatility. Suitable for 5+ year horizons.
- Debt Funds: Invest in government bonds, corporate bonds, money market instruments. Lower returns (5–7%), lower risk. Suitable for 1–3 year horizons.
- Hybrid Funds: Mix of equity and debt. Balanced Advantage Funds dynamically shift allocation between equity and debt based on market valuations.
SIP vs Lumpsum
- SIP (Systematic Investment Plan): Fixed amount every month. Benefits from rupee-cost averaging. Ideal for salaried investors.
- Lumpsum: One-time large investment. Best when markets have corrected significantly. Higher risk of buying at a peak.
Expense Ratio — The Silent Wealth Destroyer
Expense ratio is the annual fee charged by the AMC, deducted from the fund's NAV daily. Even a small difference in expense ratio compounds significantly over decades:
- Index fund: 0.1–0.2% expense ratio
- Active large-cap fund: 0.8–1.5%
- Active small-cap fund: 1.5–2.5%
Over 20 years, a 1% higher expense ratio reduces your corpus by approximately 15–18%. This is why index funds often outperform active funds after expenses.
Direct vs Regular Plans
Every mutual fund has two variants: Direct Plan (invest directly with the AMC, no distributor commission, lower expense ratio by ~0.5–1%) and Regular Plan (purchased through a distributor/broker, who earns trail commission). Always choose Direct plans — the long-term saving is significant. Invest via platforms like MF Central, Coin by Zerodha, or AMC websites for Direct access.