ETF Vs Index Funds: Which Passive Investment Is Better?

Passive investing has emerged as one of the fastest-growing investment approaches in India. Over the past decade, investors have increasingly shifted from actively managed funds to low-cost diversified products like ETFs (Exchange Traded Funds) and Index Funds. Both options aim to replicate market indices such as the Nifty 50 or Sensex, giving exposure to India’s top companies. 

While both strategies deliver near-identical returns over long horizons, they differ in their structure, expense ratios, accessibility, convenience, and tax implications.

By 2025, India’s passive investment industry has reached new heights. The ETF market grew 5.5x in the last five years, crossing an AUM (assets under management) of INR 8.39 lakh crore, with equity ETFs alone contributing INR 7.2 lakh crore. Index funds, on the other hand, now account for 17% of India’s overall mutual fund AUM, a sharp rise from less than 4% a decade ago. With both vehicles gaining traction, Indian investors are asking the critical question: Which is better—ETF or Index Fund?

How ETFs Work Vs How Index Funds Work

What Are Index Funds?

An Index Fund is a type of mutual fund that passively tracks a chosen benchmark index such as Nifty 50, Sensex, Nifty Next 50, or broader indices covering midcap and smallcap stocks. The fund replicates the holdings of the index in the same proportion, ensuring its performance mirrors the market¹

Key Features of Index Funds:

Index funds are passively managed investment vehicles that aim to replicate the performance of a specific market index, without active stock-picking or frequent portfolio changes. All transactions in index funds are executed at the end of the trading day based on the Net Asset Value (NAV), making them suitable for investors who are not concerned with intraday price fluctuations² 

One of the key advantages of index funds is their cost efficiency, expense ratios are typically low, ranging from 0.19% to 0.25% for major index funds, which is significantly lower than actively managed funds. They are also highly accessible, with minimum investment amounts starting as low as INR 500 to INR 1,000, making them ideal for beginner investors. 

Additionally, index funds support Systematic Investment Plans (SIPs), allowing investors to automate regular contributions and build wealth over time through disciplined investing. These features make index funds particularly well-suited for long-term, hands-off investors looking for a simple, low-cost way to grow their investments without trying to time the market.

To enhance long-term stability and returns, investors may also consider adding high-yield fixed income products such as bonds and SDIs offered by platforms like Grip Invest. These options balance out equity exposure with predictable cash flows and reduced concentration risk.

What Are ETFs?

An Exchange Traded Fund (ETF) also attempts to replicate an index, but unlike mutual funds, ETFs trade like shares on the stock exchange (NSE/BSE). They can be bought or sold at any time during market hours at prevailing prices. Major ETFs track equity indices, while others offer access to commodity markets like gold and silver or smart-beta strategies.

Key Features Of ETFs:

Exchange Traded Funds (ETFs) offer several key features that make them an attractive investment option. One of their main advantages is intraday trading—investors can buy and sell ETF units throughout the trading day, just like individual stocks, allowing for real-time price visibility and tactical trading. 

ETFs are also known for their very low costs, with expense ratios often ranging between 0.04% and 0.15%, which are typically lower than even index mutual funds⁴. To invest in ETFs, investors must have both a Demat account and a trading account, as ETFs are traded on stock exchanges. 

The minimum investment is usually equivalent to the price of one ETF unit, which can range from around INR 20 to INR 150 depending on the specific ETF. 

Additionally, ETFs are considered tax-efficient because capital gains are only realized when the units are sold, rather than during internal portfolio rebalancing. These features make ETFs well-suited for investors seeking lower ongoing costs, intraday flexibility, and efficient tax treatment

Also Read: Best ETFs To Invest In 2026

Statistical Comparison (2025-26 Snapshot): ETF Vs Index Funds

Here is a quick snapshot comparing ETFs and Index Funds across key features in 2025-26. This statistical view highlights how they differ in structure, costs, liquidity, and accessibility for Indian investors

Returns Snapshot: ETFs Vs Index Funds In 2025-26

ETFs and index funds have delivered competitive returns in recent years, closing the gap with actively managed funds. Here’s a breakdown of how different categories have performed in 202

Equity ETFs: Delivered 10–14% annualized returns over the last 3 years, led by Nifty 50 and Sensex-linked funds.⁶ 

Gold ETFs: Benefited from a global rally, with over 35% returns in the past year.

Top Index Funds: Offered 12–21% 3-year annualized returns, especially in Nifty/Sensex, midcap, and smallcap variants.

Both ETFs and index funds have narrowed the performance gap relative to actively managed funds, offering strong returns at far lower costs.

Tracking Error In Passive Funds

The tracking error indicates how accurately an exchange-traded fund (ETF) or an index mutual fund in India reflects a change in value followed as a method of passive investing in India. Many investors do not consider this factor when investing, which may result in the potential loss of money due to the tracking errors that arise because of transaction costs, cash reserves, and general sampling techniques. 

Because of the importance of maintaining a low tracking error, it is essential for all long-term investors to track the passive funds. It indicates that the returns for an ETF or index mutual fund will be consistent with the performance of the agreed-upon benchmark. Ultimately, tracking error will directly impact the performance of exchange-traded funds India and/or index mutual funds India.

• Causes of Tracking Error

Tracking error is caused by two main components: bid-ask spread/intra-day trading application, and the delay in the calculation of the NAV for index mutual funds. This demonstrates the differences in both the liquidities of ETFs vs. index mutual funds, and the trade-offs associated with the trade-off's associated with the volume of ETF's and the continual accumulation of cash drag due to the handling of dividends.

Even small tracking errors over time accumulate with a passive investment portfolio, thus proving the importance of selecting index mutual funds with low tracking errors for passive investments in India.

• Impact on Returns

Higher tracking errors indicate that passive investments in India are failing to track their benchmark indexes, with exchange-traded funds likely to fall behind during volatile times because of the difference in liquidity between ETFs and index mutual funds. 

The tighter tracking of index mutual funds results from direct AMC redemptions, which preserve more of the indexed returns produced by compounding over longer periods.

• Minimizing Tracking Error

Investors should choose among well-known AMCs that have significant assets under management when selecting either an ETF or an index mutual fund. Generally, the more assets are managed in a single investment, the better the replication.

Annual reporting provides useful information about actual performance and helps investors to determine the trade-offs between liquidity of their ETF and index fund investments. This allows them to select the lowest degree of deviation resulting in an optimal benchmark.

Cost Structure Comparison

The cost structures of mutual funds and ETFs in passive investing in India have the effect of comparing the expense ratios of index mutual funds to the other transaction costs borne when buying or selling ETFs. Therefore, these costs (and some additional costs) will help determine which type of investment will yield the best return in the long run for individual investors, as both types of passive investments have the potential to provide very low expense ratios. 

However, when comparing cost structures, investors must also take into consideration transaction costs such as brokerage commissions, securities transaction taxes, and spreads between buy and sell orders. The liquidity of ETFs relative to the corresponding index fund has a direct impact on investors’ total net return and is therefore a critical factor when making an investment in passive investments in India.

1. Expense Ratios Breakdown

In India, exchange-traded funds (ETFs) generally have lower expense ratios than index mutual funds. As a result, more of the investor’s money will compound over time for passive investing in India if they invest in an ETF versus an index mutual fund. In addition, index mutual funds in India offer direct plan alternatives that keep costs low without hidden trading costs, making them ideal for buy-and-hold strategies, while the liquidity of ETFs versus index funds will not affect daily trades.

2. Brokerage and Hidden Fees

Fees from brokerages will diminish the advantages of exchange-traded funds compared to index mutual funds if frequent trading occurs with ETFs due to trading costs. Index mutual funds, however, do not have broker commissions, so the passive investing via SIP in India will negatively affect the total costs of ETFs and index mutual funds.

3. Long-Term Cost Impact

In the long run, exchange-traded funds offer lower costs on an expense level, but in order to achieve a return that exceeds the predictability of index mutual funds for passive investments in India, exchange-traded funds require a disciplined trading strategy. 

Individuals who enjoy using a simple approach will find index mutual funds to be less expensive. This is when taking into consideration that the amount of return lost because of frictions incurred in trading is much higher than when comparing the relatively small differences in liquidity between exchange-traded funds and index mutual funds.

ETFs Vs Index Funds: Key Differences Explained

While both ETFs and index funds mirror market indices, their structure, costs, and accessibility differ significantly. This comparison highlights the most important factors investors should consider before choosing between them.

Benefits And Risks : ETF Vs Index Funds

When ETFs May Not Track The Index Perfectly

Exchange-Traded Funds (ETFs) in India are one of the leading players in passive investment; however, they do not accurately track their underlying index in times of market stress with low liquidity, as indexed mutual funds do, resulting in larger deviations from their respective index than indexed Mutual Funds.

An investor's thin list of trading volumes and resulting larger bid-ask spreads result in an increase in price per unit of an ETF, therefore providing an investor with inferior returns when attempting to buy and sell an ETF during a time of limited liquidity or large price drops. The above concerns will result in cash flows for ETF investors being much lower than for Index Fund investors, forcing Indian investors to lose out on accurate benchmarking, as illiquid ETFs will underperform during periods of market volatility.

Consequently, proactive selection will reduce exposure to these issues and ensure the investor's goals of passive investment in India remain intact.

• Low Liquidity Scenarios

With the lack of trading in ETFs in India, the investor's liquidity versus the index fund liquidity issues will cause larger deviations in the above examples, with an ETF sell-off exceeding the NAV. However, the index fund will redeem at the investor's exact NAV in such periods so that the index fund and the ETF investors will continue to remain the closest aligned to the index for passive investment.

• Market Volatility Effects

Due to the relatively high market volatility, tracking errors will expand for ETFs due to the greater discrepancy in returns between the established price for an ETF and the change in the ETF's NAV, as well as the large change in the NAV of the corresponding index fund. These types of discrepancies will test the short position holders of the ETFs in India's volatile markets.

• Creation-Redemption Failures

Exchange-traded funds (ETFs) can create cash drag while waiting for creation unit transactions to occur. ETFs will typically be farther from an index than index mutual funds that hold. Because of the difference in liquidity for ETFs and the possibility of low trading volumes for index mutual funds, you must rely on ETFs to provide you with passive investment options in a liquidity-oriented market instead of choosing low-volume index mutual funds.

Which Is Better For Indian Investors In 2026?

The choice between ETFs and Index Funds comes down to investor goals, behavior, and convenience.

1. For disciplined, long-term investors: Index funds are the better choice, thanks to SIP facilities, NAV-based stability, and accessibility for beginners. Investors planning to build wealth systematically, for goals such as retirement or children’s education, find index funds optimal.

2. For cost-conscious, market-savvy investors: ETFs offer superior cost efficiency, intraday flexibility, and greater tax efficiency. They suit advanced investors who already use demat accounts and want tactical exposure or to trade passively managed segments with lower expense ratios.

3. For balance: Many Indian investors combine both—using index funds for systematic contributions and ETFs for tax efficiency, diversification into commodities (gold/silver), or tactical asset allocation.  

For further diversification, investors can add fixed income products like corporate bonds and Securitised Debt Instruments (SDIs), available on SEBI-regulated platforms such as Grip Invest. These instruments provide stable, non-market-linked returns and help mitigate equity and commodity market risks. Grip Invest enables easy access to curated, credit-rated bonds and SDIs as well as diversified baskets that offer regular income and lower overall portfolio risk.

Conclusion

Both ETFs and Index Funds have firmly established themselves as leading vehicles for passive investing in India. For most retail investors, index funds remain a simpler and more accessible choice, aligned with long-term goals and the convenience of SIPs. For seasoned investors, ETFs provide lower costs, greater tax efficiency, and real-time trading control, making them especially useful in diversified portfolios.

In 2026 as awareness and adoption of passive investing grows rapidly, a balanced approach combining both ETFs and Index Funds may deliver the best outcomes. Indian investors seeking low-cost, transparent, and diversified exposure can confidently rely on either—choosing based on their personal investing style, financial goals, and comfort with trading tools.

To explore more investment opportunities beyond traditional funds, log in to Grip Invest and discover curated alternative investment options today.

FAQs On ETF Vs Index Funds In 2026

1. Is ETF safer than index funds?
Both ETFs and index funds are equally safe since they track the same index; the difference lies in structure and trading convenience, not safety.

2. Which has better returns: ETFs or index funds?
Returns are almost identical, but ETFs may deliver slightly better results due to lower expense ratios and intraday trading flexibility.

3. Can I start ETFs with SIP in India?
Yes, but unlike mutual funds, ETFs don’t have a built-in SIP option, you can set up SIPs through your broker’s platform for regular ETF purchases.

4. Do ETFs have lower fees than index funds?

Yes. While ETFs typically have lower expense ratios than index mutual funds, brokerage commissions, and the difference between price and value from the bid/ask spread can offset those savings for active traders.

5. Can beginners invest in ETFs?

Yes, but they typically require those investors to open a demat account. Since they are typically mutual funds with SIPs, it would be easier for first-time investors to invest in mutual funds as a means of passive investing.

6. Are ETFs a good fit for long-term investors?

ETFs can work for long-term passive investing when there is strong liquidity; however, index mutual funds are a better fit because they offer a simpler and more cost-effective way to sit back and let it grow.

References:

1. Fincash. accessed from: https://www.fincash.com/l/best-index-funds

2. Bajaj Finserv, accessed from: https://www.bajajfinserv.in/investments/index-funds-vs-etfs

3. Kotak Mutual Funds, accessed from: https://www.kotakmf.com/Information/blogs/etf-vs-index-fund_

4. Zerodha, accessed from: https://www.zerodhafundhouse.com/blog/a-comprehensive-guide-to-exchange-traded-funds-etfs-in-india/

5. Zerodha FUnd House, accessed from: https://www.zerodhafundhouse.com/blog/a-comprehensive-guide-to-exchange-traded-funds-etfs-in-india/

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