Exchange traded funds are, for most investors, the most useful financial innovation of the last thirty years. They give you a whole index in one trade, at very low cost, and they trade on NSE and BSE like any share. In their index form they have beaten most active managers over long periods simply by costing less.
India's ETF market grew fast after 2015, when the Employees' Provident Fund Organisation began putting part of its new money into equity ETFs. Today ETFs cover broad indices, factors, sectors, gold, silver, government bonds and overseas indices, and in August 2026 alone they took in ₹10,161 crore of net new money (AMFI). Knowing how they work helps you pick a good one and, more importantly, avoid paying for a bad one.
- Equity ETFsRs 7,237 crore
- Gold ETFsRs 2,597 crore
- Other ETFsRs 327 crore
Net inflows, August 2026, AMFI monthly data published Sep 2026. Other ETFs is the remainder of the Rs 10,161 crore total.
The creation and redemption mechanism: what makes ETFs different
A mutual fund is priced once a day at NAV, and you deal at that NAV. An ETF trades all day at a live price set by buyers and sellers. So what keeps that price close to the value of the stocks inside it?
The answer is creation and redemption, run by large players called authorised participants and market makers. They can exchange a big basket of the underlying stocks for new ETF units with the fund, or hand units back for the stocks. Retail investors cannot do this; they trade on the exchange. Since 2022 SEBI allows anyone other than market makers to deal directly with the AMC only for amounts above ₹25 crore.
- ETF trades above its NAVThe live price is higher than the value of the basket inside.
- Market maker buys the basketIt buys the underlying stocks and delivers them to the fund.
- Fund creates new unitsThe market maker receives fresh units and sells them on the exchange.
- Price falls back to NAVThe extra supply closes the gap. The reverse happens at a discount.
In liquid ETFs this keeps the price within a few paise of the indicative NAV, the iNAV that AMCs publish during market hours. In thinly traded ETFs, with few market makers and little volume, the mechanism is weak, and the price can drift well above or below the value of what you are buying. That is the risk most investors in Indian ETFs never check.
NSE, ETF market watch with traded value and iNAVTracking error: the real measure of ETF quality
A Nifty 50 ETF should deliver the Nifty 50's total return. In practice it delivers a little less. Two measures describe the gap:
- Tracking difference is the gap in return over a period, such as one year: index TRI return minus ETF return. It is mostly cost.
- Tracking error is the variability of the daily or monthly gap, how unevenly the ETF follows the index. SEBI requires AMCs to disclose it and caps it at 2% a year for index funds and ETFs, with exceptions for some indices.
The causes are the expense ratio, cash held for redemptions and dividends, the timing of dividend reinvestment, and trading costs when the index changes. Compare ETFs on the same index by their tracking difference over one and three years, which AMCs publish on their websites and in factsheets.
Premium and discount to NAV: the execution risk
Price stays near iNAV
- Large daily traded value
- Several active market makers
- Spread of a few paise on a ₹250 unit
Price can drift from value
- Low daily traded value
- Wide spread between bid and ask
- Can trade at a premium in a rush, a discount in a sell off
When you buy an ETF you pay the market price, which may be above or below the iNAV. In a large, liquid broad index ETF the gap is usually tiny. In a thinly traded sector or thematic ETF, or in any ETF during a stampede, it can be one percent or more. In October 2025, when silver rallied hard, several silver ETFs traded at large premiums to their iNAV for days; buyers paid for excitement, not for metal.
Run the defaults. On ₹5 lakh held for three years, a 0.10% expense ratio costs ₹1,500. A 0.5% premium on entry and 0.15% spreads each way cost ₹4,000, more than twice the fee you chose the ETF for. The practical rules: check the daily traded value on NSE before you buy, compare the live price with the iNAV, use limit orders, and avoid the first and last minutes of the session when spreads are widest.
The Indian ETF universe: what is available
| Category | Examples of underlying indices | Typical use |
|---|---|---|
| Broad equity | Nifty 50, Nifty Next 50, Nifty 100, Nifty 500, BSE Sensex | Core equity holding, a benchmark you can own |
| Factor or smart beta | Nifty Alpha 50, Nifty200 Momentum 30, Nifty100 Low Volatility 30, Nifty200 Quality 30 | A single factor without picking stocks |
| Sector and thematic | Nifty Bank, Nifty IT, PSU and defence themes | Tactical tilts; check liquidity first |
| Gold and silver | Domestic gold and silver prices | Diversification, with the costs of Module 6.9 |
| Debt | Government and PSU bond indices, liquid overnight indices | Fixed income and parking cash |
| International | Overseas equity indices, within RBI and SEBI limits on overseas investment | Global diversification, when limits allow new money |
Factor ETFs: the bridge to systematic investing
For readers of this library the most interesting category is factor ETFs, which track NSE's factor indices. They give you a documented factor, such as momentum or low volatility, in a cheap, liquid wrapper with no effort on your part.
- What you gain: no stock by stock execution, a regulated fund structure, and tax treated as an equity fund.
- What you give up: control. The index decides the universe, the number of stocks, the weighting and when it rebalances, typically twice a year for NSE's factor indices. A semi annual rebalance is slow for a fast signal like momentum.
When ETFs are not the right tool
ETFs solve one problem brilliantly: cheap, transparent index replication. They are not always the best answer.
- Very small amounts. With ₹50,000 you cannot hold 50 stocks directly in sensible proportions; an ETF or index fund is structurally better.
- Rules you want to control. If you want a different rebalance frequency, number of names or universe, you need to hold the stocks directly.
- Tax harvesting. An ETF is one holding. With direct stocks you can book a loss in one name and keep the rest, which an ETF does not allow.
MythAn ETF costs only its expense ratio.
FactYou also pay the bid and ask spread, any premium to iNAV, brokerage and STT on the exchange trade. In a thin ETF those can exceed years of expense ratio.
Common mistake: market orders in thin ETFs
The common mistake is placing a market order in a thinly traded ETF. The order walks up the order book and fills well above the iNAV. You have just paid a premium you will probably not get back. Always use a limit order near the iNAV, and if the spread is wide, wait or pick a more liquid ETF on the same index.
The second mistake is buying the ETF with the lowest expense ratio and ignoring tracking difference and liquidity. A fund that charges 0.05% but trades at a 0.4% spread is the more expensive one for most investors.
How this shows up in RupeeCase
A RupeeCase strategy is like an index you hold stock by stock: the rule is published, and the stocks sit in your own demat instead of inside a fund. Compared with a factor ETF, that gives you the strategy's own rebalance cadence, every 1 to 4 weeks instead of twice a year, and the ability to see every holding and every trade. The trade off is cost structure and capital: the fee is 0.2% of traded value per rebalance, and each strategy needs a minimum amount to buy one share of each holding. Some multi asset strategies hold their gold and debt sleeves through exchange traded instruments. Compare the approaches on the Dynamic Asset Allocator page, and the fees on the fee calculator.
Questions readers ask
Is an ETF better than an index fund?
ETFs usually cost less and trade during the day, but you need a demat account, you pay spreads and you can buy at a premium. Index funds deal at NAV with no spread and suit monthly SIPs. Module 6.5 compares them in detail.
How do I check if an ETF is liquid?
On the NSE ETF page, look at the traded value for the day and the gap between the last price and the iNAV. A large daily traded value and a price within a few paise of iNAV are good signs.
How are equity ETFs taxed?
Equity ETFs are taxed like listed shares: 20% on gains within 12 months and 12.5% on long term gains above ₹1.25 lakh a year. Gold, debt and international ETFs follow different rules.