What Are Mutual Funds? Types, NAV, Expense Ratio and How to Choose

Your colleague says her mutual fund gave 14% last year. Your uncle says mutual funds are "subject to market risk, so avoid them". An advertisement says "Mutual Funds Sahi Hai". Which of them should you believe?

None of them tells you what a mutual fund actually is. Once you know, the rest is easy to judge for yourself.

A mutual fund collects money from thousands of investors and puts it into a basket of investments such as company shares, government bonds or corporate bonds. A professional fund manager at an asset management company (AMC) decides what to buy and sell. The fund house is regulated by SEBI.

You get units in proportion to your money. If the basket grows in value, so do your units.

Why people use them:

• Diversification: ₹500 can give you a small share of dozens of companies.
• Professional management or low-cost index tracking.
• Convenience: you can start with a small SIP.
• Regulation and transparency: funds publish their holdings and costs.

NAV (Net Asset Value) is the price of one unit. It is the fund's total value minus costs, divided by the number of units. A fund with an NAV of ₹10 is not cheaper than one with an NAV of ₹500. What matters is the percentage change, not the number.

Expense ratio is the yearly fee the fund charges, as a percentage of your money. It is deducted from the NAV, so you never see a separate bill. A difference of 1% a year adds up to lakhs over decades.

Direct vs regular plan. Both hold the same investments. A regular plan pays a commission to the distributor and so costs more. A direct plan costs less. Choose "Direct Plan - Growth" unless you have a clear reason to pay for advice.

Exit load is a fee if you sell within a set period, often one year for equity funds.

Benchmark is the index a fund is compared with, such as the Nifty 50.

They invest mainly in shares. They have the highest long-term growth potential and the biggest short-term swings. Common kinds:

• Index funds copy an index such as the Nifty 50. Low cost, no stock picking.
• Large-cap, mid-cap and small-cap funds invest in bigger or smaller companies. Smaller means more risk.
• Flexi-cap and multi-cap funds can move between company sizes.
• ELSS is a tax-saving equity fund with a 3-year lock-in, useful only under the old tax regime. See old vs new tax regime.
• Sector and thematic funds bet on one industry. Risky and not for a first fund.

They lend to the government or companies through bonds. They are generally steadier but not risk-free: interest rates and a company's credit quality can hurt returns. Types include liquid, short-duration, corporate bond and gilt funds. For a comparison with deposits, see FD vs debt funds vs PPF.

They mix equity and debt in one fund. Balanced advantage and aggressive hybrid funds are examples. Useful if you want one fund and a smoother ride.

Gold funds, international funds and fund-of-funds exist too. Leave them until you have the basics in place.

SEBI requires every fund to show a riskometer from low to very high. Equity funds can fall 30% or more in a bad year. That is normal and the reason the money should stay invested for 5+ years.

Risk is not only price swings. It also includes:

• Selling in panic at a low.
• Chasing last year's winner, which often does not repeat.
• Putting short-term money in equity, such as next year's school fees.

Rules as of FY 2026-27 (verify before acting):

• Equity funds: held over 12 months, gains above ₹1.25 lakh a year are taxed at 12.5%. Held 12 months or less, gains are taxed at 20%.
• Debt funds bought on or after 1 April 2023: gains are taxed at your income tax slab rate, whatever the holding period.

Tax applies when you sell, not while you hold.

1. Name the goal and the date. Retirement in 25 years suits equity. A holiday in 2 years does not.
2. Check your foundation. Keep an emergency fund and health insurance first.
3. Pick the category that matches the horizon: equity for 5+ years, debt or liquid for under 3.
4. Prefer a broad index fund for equity if you are a beginner.
5. Choose Direct, Growth.
6. Compare the expense ratio between similar funds, and check the fund's track record over 5 to 10 years against its benchmark, not only the last year.
7. Start a SIP and automate it.

• Buying many overlapping funds
• Judging a fund by NAV
• Stopping a SIP in a falling market
• Investing in a sector fund because it is trending
• Treating mutual funds as fixed deposits
• Buying through an agent without knowing it is a regular plan

Mutual funds are regulated, and your units are held separately from the AMC's own money. But returns are not guaranteed, and equity funds can lose value.

Many funds start at ₹100 to ₹500 a month or ₹1,000 as a lump sum.

Open-ended funds let you sell on any business day, subject to exit load and ELSS lock-in. Money arrives in one to three working days.

Compare it with its benchmark and similar funds over 5 years or more. One year is not enough.

If you need personal help, use a fee-only SEBI-registered investment adviser, not someone paid by commissions.

Mutual fund investments are subject to market risks; read all scheme-related documents carefully. Tax rules are as of October 2026 and may change. This article is educational, not advice.