Index Funds
A Low-Cost Way to Own the Whole Market. Understand what index funds are, how passive investing works, their costs, risk and taxation, and how to use them as a low-cost core of your portfolio.
What is an Index Fund?
An index fund is a mutual fund that tracks a market index instead of trying to beat it. Rather than a manager picking stocks, the fund holds every constituent of an index such as the Nifty 50 or the Nifty 500, in the same weights. This approach is called passive investing.
Because there is no active stock selection, index funds charge a far lower fee than actively managed funds. The Securities and Exchange Board of India (SEBI) requires an index fund to invest at least 95 percent of its assets in the securities of the index it tracks, so what you see is what you own.
In plain terms: an index fund buys the market. You give up the chance of beating the index in exchange for low costs, full transparency, and returns that closely mirror the benchmark over time.
Why Investors Choose Index Funds
Low cost
With no active management, index funds carry a low Total Expense Ratio (TER). Over decades, a lower fee compounds into a meaningful difference in your final corpus.
Broad diversification
A single index fund can hold 50, 250, or 500 companies at once, so no single stock decides your outcome.
No manager risk
Active funds depend on a manager's calls, which can go wrong. An index fund removes that variable and simply tracks the benchmark.
Transparent and simple
You always know what an index fund holds, because it mirrors a published index. There are no style drifts or surprise bets.
Index Funds at a Glance
Popular Types of Index Funds
Common indices Indian investors track
Nifty 50 index funds
Track India's 50 largest companies. The most common starting point for passive investors.
Broad market index funds
Nifty 500 and Nifty Next 50 funds spread across many more companies for wider coverage.
International index funds
Funds tracking the S&P 500 or Nasdaq 100 add global exposure to your portfolio.
How to Choose an Index Fund
Four checks before you commit money
Pick the index first
Decide which market you want to own: the Nifty 50 for large caps, the Nifty 500 for the broad market, or an international index for global exposure. The index drives your return, not the fund brand.
Compare tracking error
A good index fund hugs its index closely. Lower tracking error means the fund replicates the index more faithfully. Compare tracking error across funds on the same index.
Check the expense ratio
Since funds on the same index hold identical stocks, the cheaper fund usually wins. Always compare the Direct plan expense ratio.
Match it to your goal and horizon
Equity index funds suit medium to long term goals. Confirm the allocation fits your overall plan rather than chasing last year's return.
Risk, Return, and Who Index Funds Suit
An index fund carries the same market risk as the index it tracks. IF the Nifty 50 falls 20 percent, THEN a Nifty 50 index fund falls close to that too. Passive investing removes manager risk, not market risk.
- IF you are a first-time investor who wants market returns without betting on a manager, THEN a broad index fund is a sensible core.
- IF you are willing to accept market-level returns rather than trying to beat the market, THEN index funds suit you, because most active funds struggle to beat their benchmark consistently.
- IF your goal is less than three years away, THEN equity index funds may be too volatile, and a shorter duration debt option deserves a look.
- A small gap between the fund and its index, called tracking error, is normal. Lower tracking error means the fund is doing its job well.
- Historical returns are not a promise of future returns. Index funds have broadly delivered the return of their benchmark minus a small cost, but any single year can be negative.
How Are Index Funds Taxed?
- Most index funds in India track equity indices like the Nifty 50 or Nifty 500, so they follow equity taxation.
If you sell units within 12 months, gains are Short Term Capital Gains (STCG), taxed at 20 percent. - If you hold for more than 12 months, gains are Long Term Capital Gains (LTCG), taxed at 12.5 percent on the amount above Rs 1.25 lakh in a financial year.
Not every index fund is equity. Funds that track international indices such as the S&P 500 or Nasdaq 100, and those tracking debt indices, can be taxed differently. Check the fund's tax category before you invest.
There is no tax while you stay invested. Tax applies only when you redeem or switch. A Systematic Investment Plan (SIP) is treated as a series of separate purchases, so each instalment has its own holding clock. Tax rules can change in a Union Budget, so confirm current rates before you transact, or let NovaAI factor your slab and holding period into the after tax picture.
Explore Mutual Fund & Its Categories
Compare where each category sits on risk and return
Mutual Funds
Start here to compare every equity and debt category in one place and find where to begin.
Large Cap
India's top 100 companies. The lowest volatility equity category and a steady portfolio core.
Mid Cap
Companies ranked 101 to 250. Higher growth than large caps with meaningfully bigger swings.
Small Cap
Companies ranked 251 and beyond. The highest growth potential and the sharpest drawdowns.
Flexi Cap
One fund that moves freely across large, mid, and small caps as the manager sees opportunity.
Liquid Funds
Low risk debt funds for parking short term money you may need within days or weeks.
Related Calculators & Research
Model returns, check overlap, and plan your investments before you commit
SIP Calculator
Project how a monthly index fund investment could grow over your horizon.
Lumpsum Calculator
Estimate the future value of a one-time index fund investment.
CAGR Calculator
Compute the annualised return of an index or fund over any period.
Portfolio Overlap Calculator
Spot duplicate stocks between your index funds and active funds.
Fund Category Explorer
Browse and compare index funds side by side.
Asset Performance Dashboard
Compare 10 years of Nifty, Gold, and Nasdaq returns and see why no single asset wins every year.
See Where Index Funds Fit in Your Portfolio
ovelty Wealth does more than explain index funds—it helps you optimize them. Connect your portfolio, and NovaAI will evaluate your asset mix, flag fund overlap, and ensure your allocation aligns with your goals.
Index Funds: Frequently Asked Questions
An index fund is a mutual fund that tracks a market index, such as the Nifty 50, by holding the same stocks in the same weights. There is no active stock picking, so costs are low and returns closely mirror the index. This is known as passive investing.
Both track an index. An index fund is bought and sold once a day at the day's Net Asset Value (NAV), directly from the fund house, and works well for a Systematic Investment Plan (SIP). An Exchange Traded Fund (ETF) trades on the stock exchange through the day and needs a demat account. IF you want a simple monthly SIP, THEN an index fund is usually easier.
It depends on your view. Index funds deliver the market return minus a small cost, while active funds try to beat the market but often do not, especially in large caps. IF you prefer low cost and predictability over the chance of outperformance, THEN index funds are compelling.
There is no single best index fund for everyone. On the same index, funds hold near-identical stocks, so the ones with lower tracking error and a lower expense ratio usually stand out. Compare options in the Fund Category Explorer, or speak to a Novelty Wealth adviser for a pick matched to your goal.
Index funds carry full market risk. Their value rises and falls with the index they track. They remove manager risk, not market risk, so they are not safer than debt funds or fixed deposits. Invest based on your goal and time horizon.
Most index funds track equity indices and are taxed as equity: 20 percent on gains held under 12 months (STCG) and 12.5 percent above Rs 1.25 lakh on gains held longer (LTCG). International and debt index funds can be taxed differently. Verify current rules before transacting.