Difference Between ETF and Index Fund: Which Investment is Better for You?

A ₹2,000 purchase costing ₹11 in brokerage gives up 0.55% of your money before the market opens. The fund you bought is capped at 0.90% a year in expenses. Put those numbers together and the usual etf vs index fund argument changes shape, because almost every comparison stops at the expense ratio. Since 1 April 2026, the Securities and Exchange Board of
India (SEBI) caps both products at 0.90%. Cost gets decided somewhere else.

ETF vs Index Fund: Key Differences at a Glance

Compare them on the axis that moves money: what each costs to own, and to buy.

They match on the expense cap, the one line most comparisons treat as the whole difference.

What is an ETF?

An Exchange Traded Fund (ETF) holds a basket of securities and trades on the exchange like a share. Under SEBI’s 2026 rules it must hold at least 95% of total assets in the securities of the index it tracks.

Because it trades, someone must quote a price all day. SEBI requires at least two Market Makers per ETF. It also requires equity ETFs to publish an indicative NAV, or iNAV, on the exchange within 15 seconds of the underlying market.

So you get an exact fair-value reference at the second you order.
You do not get a guarantee you will pay it.

What is an Index Fund?

An index fund tracks the same index through a mutual fund scheme instead of a listed security. The same 95% rule applies, so the portfolio inside is built to the same specification.

You buy from the fund house at NAV, not from another investor. Under the SEBI rule effective 1 February 2021, you get a day’s NAV only if your application and your money reach the fund before the 3:00 PM cut-off.

That is the trade-off with any mutual fund investment bought at NAV. You get a known, audited price, and lose the ability to pick your moment.

Difference Between ETF and Index Fund

The expense ratio gap everyone quotes is real. It separates two funds, though, not two structures, because SEBI caps both at 0.90%.

The structural difference sits in the transaction. Take ₹2,000 a month. Through an index fund, brokerage is nil. Through an ETF at Indiabulls
Securities, brokerage is 2.5% or ₹11 per executed order, whichever is lower, applicable in NSE (CM, FO, CD), BSE (CM, FO) and MCX. On ₹2,000, 2.5% is ₹50, so the ₹11 applies.

That is 0.55% of the instalment, upfront, every month. Twelve instalments cost ₹132 on ₹24,000 invested, before statutory charges and the bid-ask gap.

Now put ₹50,000 in at once. The same ₹11 is 0.022%. A per order charge does not scale with your money, so purchase size and frequency decide which structure costs less. Not the label on it.

ETF vs Index Fund: Pros and Cons

Advantages of ETFs

• Buy and sell any time in the session, at a price you can see.
• No exit load on units sold in the market.
• Live iNAV lets you check fair value before ordering.
• At least two Market Makers per ETF, mandated by SEBI.

Disadvantages of ETFs

• A demat and trading account are required, with brokerage on every order.
• The market price can sit above or below fair value.
• In a thin ETF, buying at ₹102 and selling at ₹98 against a ₹100
  NAV destroys most of the return.
• Whole units only, so a fixed rupee amount leaves a remainder idle.

Advantages of Index Funds

• No brokerage, which matters most on small, frequent purchases.
• Exact rupee amounts, from ₹100 a month at Indiabulls
  Securities.
• No demat account, and no live price to misjudge.

Disadvantages of Index Funds

• You cannot choose your price. You get the NAV of the day your money is realised.
• A late bank debit pushes you past the 3:00 PM cut-off.
• Some schemes carry an exit load, so read the scheme document.

ETF vs Index Fund: Which is Better?

Neither wins as a category. Framed as index ETF vs index fund on the same benchmark, the two portfolios are near identical, so the deciding variable is ticket size and frequency.

Small monthly amounts favour the index fund, since a per order charge eats a visible share of a small instalment. Large or occasional purchases favour the ETF, where that charge shrinks to a rounding error and you choose your entry price.

If you plan to start a sip and then ignore the screen, work out the per order cost first.

Also Read: Before starting a SIP, explore Common SIP Myths to make a more informed decision about your investment approach.

ETF vs Index Fund: Similarities You Should Know

The 2026 rules pulled ETF and index funds closer together.

• Both must hold at least 95% of total assets in the index they track.
• Both carry the same 0.90% cap on the Base Expense Ratio.
• Both cap tracking error at 2% under SEBI’s Development of Passive Funds circular of
  23 May 2022. Tracking error measures how far daily returns drift from the index.
• On equity oriented schemes, both pay 0.001% STT on the sell side.
• Both carry the same market risk. Tracking a broad index reduces the risk tied to any one company, not market risk.

Who Should Invest in ETFs and Who Should Choose Index Funds?

ETFs suit an investor who already has a trading account, buys in reasonable size, and will check the iNAV before ordering. They suit you less if your plan is ₹1,000 on the fifth of every month, forgotten thereafter.

Index funds suit the opposite habit: automation, exact rupee amounts, no execution decisions. If the ETF route fits you, open a demat account first, because ETF units settle into it.

If an ETF suits your investing approach, you can Invest in ETFs through Indiabulls Securities.

ETF vs Index Fund: Which Option Can Help You Achieve Your Financial Goals?

Work the etf versus index fund decision in this order. Fix your instalment size and frequency first, since that decides whether a per order charge matters at all. Then choose the structure that costs less at that size.

Compare individual funds last, using the tracking error every fund house and AMFI publish daily. A fund that drifts from its index can cost you more than a small gap in expense ratio.

Then size the goal. Set your amount and horizon in a SIP calculator and calculate your sip returns against the target you are funding.