What Is an ETF (Exchange Traded Fund), and How Does It Actually Work?

In March 2024, I put ₹15,000 into a Nifty 50 ETF through my Zerodha account, expecting it to behave more or less like the index mutual fund I already had. It didn’t, not exactly. The order filled at ₹1 above the price I’d seen ten seconds earlier, the units showed up in my demat holdings instead of a folio statement, and when I checked the NAV that evening, it didn’t match what I’d actually paid. Nobody had explained that this thing trades like a stock, not like a mutual fund, even though it holds the same basket of companies underneath.

That gap between what I assumed and what actually happened is basically the entire story of what an ETF is. It’s not a complicated product once you’ve used one, but almost every explanation of it starts with jargon instead of the practical difference that actually trips people up the first time they buy one.

What Is an ETF, in Plain Terms?

An ETF, or Exchange Traded Fund, is a basket of investments usually stocks, sometimes bonds or gold that you buy and sell on a stock exchange the same way you’d buy a share of Reliance or TCS. Instead of picking one company, you’re buying a small slice of many companies at once, bundled into a single unit that trades under one ticker.

Most ETFs in India are passive, meaning they simply track an index like the Nifty 50 or Sensex rather than having a fund manager pick and choose stocks. If the Nifty 50 goes up 1%, a Nifty 50 ETF is designed to go up roughly 1% too, minus a small cost. That’s the whole idea you get the market’s return without betting on individual companies, and without paying someone to try (and often fail) to beat it.

Here’s the part that actually matters day-to-day: an ETF needs a demat account, the same one you use for stocks, because the units settle into your holdings exactly like shares do. A regular mutual fund doesn’t need one it lives in a folio, not a demat account. That single difference explains almost every practical quirk people run into the first time they buy an ETF, from why the transaction shows up differently in their statements to why there’s no automatic SIP by default.

There’s also a subtler distinction worth knowing early: creation and redemption of units happens in bulk, through large institutions called Authorised Participants (APs), who deal directly with the fund house in big blocks of units. You and I never interact with that layer we’re just trading existing units with other investors on the exchange but it’s the mechanism that’s supposed to keep the market price honest against the fund’s actual holdings.

How Is an ETF Different From a Regular Mutual Fund?

This is where most of the confusion actually sits, and it’s worth laying out plainly rather than in a paragraph you have to re-read twice.

I’ve used both structures for the same underlying index, and the mutual fund version has genuinely been easier to automate I set up a SIP once in an index fund and never touched it again, while the ETF means I have to remember to place an order every month if I want to keep adding to it. If you want the deeper mechanics behind that trade-off, especially around what happens when you actually try to exit, HMA Wealth’s ETF vs Mutual Fund liquidity comparison goes into that specifically it’s the natural next read once you understand the basics of an ETF.

Why Does an ETF Trade at a Live Price Instead of One NAV a Day?

This is the mechanism that confused me the most when I started, so it’s worth actually explaining rather than just stating.

A mutual fund transacts directly with the Asset Management Company (AMC). You buy, the AMC creates new units for you; you sell, the AMC redeems them always at that day’s closing Net Asset Value (NAV), calculated after markets close.

An ETF works differently. Once units are created, they trade between investors on the exchange, just like a stock your buy order gets matched against someone else’s sell order in the order book. The price moves through the day based on actual demand and supply, hovering close to the fund’s intraday NAV (called iNAV), but not always exactly on it.

That’s also why a fund can trade at a small premium or discount to its actual NAV, especially for thinly traded ones with lower volumes. Before buying, it’s worth checking the average daily trading volume and the spread between the buy and sell price on your broker’s app a wide gap is a sign it isn’t being traded actively, and you could end up paying more (or getting less) than it’s genuinely worth. I learned this the slightly expensive way with a sectoral fund that barely traded a few thousand units on an average day; the popular Nifty and Sensex-tracking ETFs rarely have this problem.

What Are the Main Types of ETFs Available in India?

Not every one of these tracks the Nifty. The category has grown into several distinct buckets, and knowing which you’re looking at matters for both risk and taxation.

1. Equity index funds Track a broad index like the Nifty 50, Nifty Next 50, or Sensex. This is where most first-time buyers start, and where the trading volumes tend to be highest.
2. Sectoral/thematic funds Track a narrower slice, like IT, banking, or PSU stocks. Higher risk, since you’re concentrated in one part of the market, and often lower trading volume too.
3. Gold funds Hold physical gold (or gold-backed assets) instead of stocks. A way to own gold without worrying about storage or purity, though a few large AMCs have periodically restricted big new subscriptions when demand runs hot.
4. Silver funds A newer category that’s grown fast; works similarly to gold funds but tracks silver prices instead.
5. Debt/bond funds Track a basket of government or corporate bonds, generally lower risk and lower return than the equity versions, and taxed differently too, as you’ll see below.
6. International funds Give exposure to foreign indices like the Nasdaq 100, though availability and structure vary by fund house and can change with RBI’s overseas investment limits, which have tightened and loosened at different points over the past few years.

Passive funds which bundles ETFs and index mutual funds together have genuinely become a bigger part of how Indians invest over the last couple of years, and the gold and silver categories in particular have seen real momentum recently. Combined AUM in this segment crossed ₹15 lakh crore by mid-2026, with gold-linked funds alone growing several times over on a year-on-year basis as investors leaned into precious metals amid market volatility. Verify current figures against AMFI’s monthly data before quoting them anywhere, since these numbers shift every month and shouldn’t be treated as a fixed fact.

How Do You Actually Buy Your First ETF?

I’ll walk through this the way I actually did it, not the textbook version.

1. Open a demat and trading account, if you don’t already have one Zerodha, Groww, and most other brokers let you do this online in under a day with your PAN and Aadhaar. If you already invest in stocks, you already have what you need.
2. Search by ticker or name in your broker’s app for example, a Nifty 50-tracking fund will usually have “NIFTYBEES” or similar in its symbol, though exact tickers vary by fund house.
3. Check the trading volume and spread before placing the order. If it barely trades, hold off or pick a more liquid alternative tracking the same index there are usually two or three options per major benchmark.
4. Place a limit order, not a market order, especially for a thinly traded fund. A limit order lets you set the maximum price you’re willing to pay, which protects you from a bad fill if the spread is wide that moment.
5. Confirm the units land in your demat holdings this usually happens the next trading day (T+1), per the current NSE/BSE settlement cycle.

That third step is the one I skipped the first time, and it’s the one that actually matters. I’ve since made it a habit to glance at the order book depth before buying anything beyond the two or three most-traded ETFs in a category, and to double-check the tracking index actually matches what I think it does a couple of AMCs have launched near-identical-sounding products tracking subtly different variants of the same benchmark.

What Does an ETF Actually Cost You?

The expense ratio is the annual fee the fund charges to manage your money, expressed as a percentage of your investment, deducted quietly from the NAV rather than billed to you directly. For a fund tracking the Nifty 50 or Sensex, this typically runs lower than an actively managed equity mutual fund, since there’s no fund manager actively picking stocks the fund just mirrors the index. HMA Wealth’s breakdown of expense ratios and their impact on returns is worth reading if you want to see how even a small difference compounds over 15–20 years.

But the expense ratio isn’t the only cost. Every trade buy or sell also carries brokerage (often ₹0–₹20 depending on your broker), Securities Transaction Tax, and exchange charges, the same as trading a stock. A regular mutual fund bought directly typically has none of these per-transaction charges. For a one-time investment this difference is small; for someone trading in and out of an ETF frequently, it adds up in a way that’s easy to underestimate until you actually look at your contract notes over a year and add up every line item.

How Are ETF Gains Taxed in India?

This is the part that catches people off guard, because taxation here isn’t one flat rule; it depends on what the fund actually holds underneath.

Securities Transaction Tax applies on equity trades in this category a small percentage of the transaction value, deducted automatically by your broker but it does not apply to gold or silver ones. These rates and thresholds have shifted meaningfully after recent Union Budget changes, so treat this table as a starting point and verify the current rates against the Income Tax Department’s official guidance, or with a chartered accountant, before you file.

Tax rules on capital gains are genuinely one of the fastest-moving parts of Indian finance, and what’s accurate today may not be a year from now. I’ve had to redo my own year-end tax estimate twice after a rule shifted mid-year, so I don’t take this table for granted either.

Is an ETF Actually the Right Fit for You?

I’d be lying if I said an ETF is automatically better than a mutual fund I hold both, for different reasons, and switch between them depending on what I’m trying to do with a given amount of money.

If you want to invest a lump sum occasionally and don’t mind checking a live price before you buy, a liquid, popular ETF tracking the Nifty 50 or Sensex is a genuinely low-cost way to get market exposure. If you’d rather set up a SIP once and forget about it, an index mutual fund tracking the same benchmark gets you nearly the same result with far less ongoing effort, usually for a slightly higher expense ratio.

HMA Wealth exists to walk through exactly this kind of practical, “which one actually fits how I invest” decision, rather than just listing definitions because the textbook explanation of an ETF rarely mentions the parts that trip up a first-time buyer. If you’re still deciding where this fits into your broader portfolio, our guide on how to start investing in India is a reasonable place to zoom out from this single product to the bigger picture.

None of this is personalised investment advice, and HMA Wealth isn’t a SEBI-registered investment adviser or research analyst. Returns mentioned here are illustrative or historical, never a promise of what any fund will do going forward, and market-linked investments carry real risk of loss regardless of how they’re structured. Talk to a certified financial planner or SEBI-registered adviser before making a decision specific to your own money and goals.

FAQs – What Is an ETF

Written by Hasanraza Ansari

Founder of HMA Wealth · Empowering India’s Next Generation of Investors

Finance & Operations Expert with 9+ years of experience, dedicated to simplifying wealth creation and helping Indians invest smarter through HMA Wealth.

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Educational content only. This isn’t personalized financial advice, please do your own research or consult a qualified professional before making financial decisions.