Best Index Mutual Funds in India (2026)

Index mutual funds are passive funds that aim to replicate the performance of a market index such as the Nifty 50 or BSE Sensex. These funds invest in the same companies that make up the index, allowing investors to track overall market performance at a relatively low expense ratio.

Top 10 Best Index Mutual Funds in India Based on Returns, Ranks & AUM

261 Mutual Funds
Rank
Exp. Ratio
Motilal Oswal Nifty Midcap 150 Index Fund
15.33%
23.69%
19.96%
-
0.23
₹2901 Cr
Aditya Birla Sun Life Nifty Midcap 150 Index Fund
15.06%
23.55%
19.88%
-
0.4
₹386 Cr
Nippon India Nifty Midcap 150 Index Fund
15.13%
23.42%
19.7%
-
0.3
₹2018 Cr
Motilal Oswal Nifty Smallcap 250 Index Fund
13.76%
22.2%
18.5%
-
0.33
₹932 Cr
Nippon India Nifty Smallcap 250 Index Fund Dir Gr
13.68%
21.7%
18.25%
-
0.35
₹2523 Cr
Aditya Birla Sun Life Nifty Smallcap 50 Index Fund
16.55%
26.56%
16.1%
-
0.48
₹234 Cr
Kotak Nifty Next 50 Index Fund
13.19%
21.95%
15.68%
3/12
0.1
₹854 Cr
DSP Nifty Next 50 Index Fund
13.12%
21.91%
15.55%
5/12
0.26
₹1066 Cr
DSP Nifty 50 Equal Weight Index Fund
9.45%
17.14%
15.53%
3/22
0.4
₹2255 Cr
UTI Nifty Next 50 Index Fund
13.12%
21.94%
15.52%
6/12
0.35
₹5551 Cr

AUM Growth of Index Mutual Funds - May 2026

In the past one month, the Motilal Oswal BSE Enhanced Value Index Fund Direct Growth has emerged as the leader in net AUM growth, witnessing an impressive addition of ₹116.42 crore. This positions it as one of the top-performing Index mutual funds in terms of investor interest and fund growth.

Top Stock added by Index Mutual Funds - May 2026

Over the last month, Hindustan Aeronautics Ltd Ordinary Shares has been added to the portfolios of 22 out of 153 Index mutual funds. This signals growing confidence in the stock’s long-term growth prospects among Index fund managers.

Top Stock sold by Index Mutual Funds - May 2026

In contrast, Axis Bank Ltd has been sold by 15 of 153 Index mutual funds in the last one month. This shift underscores a cautious approach by fund managers toward the stock, reflecting changing market dynamics.

Sector allocation of Index mutual funds - May 2026

Over the last 6 months, Index category has seen increased allocation towards Energy, Consumer Cyclical, Financial Services sectors and allocation in Real Estate, Tech, Health sectors has decreased

Sectoral allocation of Index Funds
As of 07 May 2026
Sector
AUM
Financial Services
Financial Services

Increased by 12.74%, in last 6M

9.81K Cr
Industrial
Industrial

Decreased by 2.41%, in last 6M

6.5K Cr
Consumer Cyclical
Consumer Cyclical

Increased by 16.90%, in last 6M

5.18K Cr
Basic Materials
Basic Materials

Decreased by 0.35%, in last 6M

4.11K Cr
Tech
Tech

Decreased by 17.74%, in last 6M

3.6K Cr
Health
Health

Decreased by 12.83%, in last 6M

2.98K Cr
Energy
Energy

Increased by 20.78%, in last 6M

2.26K Cr
Consumer Defensive
Consumer Defensive

Decreased by 6.41%, in last 6M

2.22K Cr
Communication
Communication

Increased by 12.16%, in last 6M

912.97 Cr
Utilities
Utilities

Increased by 5.35%, in last 6M

861.92 Cr
Real Estate
Real Estate

Decreased by 25.00%, in last 6M

287.9 Cr

What Are Index Funds and How Do They Work?

Index funds are mutual fund schemes that track a specific stock market benchmark, such as the Nifty 50 or Sensex. Instead of actively selecting stocks, these funds replicate the composition of the underlying index.

Because index funds follow a passive investment strategy, they generally have lower expense ratios compared to actively managed mutual funds.

Under the framework defined by the Securities and Exchange Board of India, index funds are classified under “Other Schemes” rather than active equity or debt categories.

Returns from index funds are market-linked and not guaranteed. Past performance does not guarantee future returns.

SEBI's Classification Rule for Index Funds

Under SEBI’s mutual fund categorisation framework, index funds and exchange-traded funds (ETFs) fall under the “Other Schemes” category.

Key rules include:

• Each index fund must clearly disclose the benchmark index it tracks.
• The portfolio should replicate the composition of the benchmark index.
• Fund houses must regularly disclose tracking error, which measures how closely the fund follows the index.

Two important metrics when evaluating index funds are expense ratio and tracking error. Lower values generally indicate a more efficient fund.

How Do Index Funds Generate Returns?

Index funds generate returns by tracking the performance of the underlying index.

Returns mainly come from:

1. Capital appreciation

When the stocks in the index increase in value, the fund’s NAV typically rises.

2. Dividends

Dividends received from the underlying stocks may either be reinvested (growth option) or distributed to investors under the IDCW option.

Since index funds aim to replicate the benchmark, their goal is not to outperform the market but to match it as closely as possible.

Who Should Invest in Index Funds?

Index funds may be suitable for:

• Long-term investors seeking broad market exposure
• Cost-conscious investors who prefer low expense ratios
• First-time equity investors looking for simple market-based investing
• Investors building a low-cost core portfolio

They may not be suitable for:

• Investors trying to outperform the market through active management
• Those looking for downside protection during market corrections

Advantages of Index Mutual Funds

Some key advantages include:

  • Low cost

Index funds typically have lower expense ratios because they follow a passive investment strategy.

  • Diversification

Investing in an index fund provides exposure to multiple companies within the index.

  • Transparency

Since the fund tracks a public index, the portfolio composition is usually predictable.

  • Long-term market participation

Index funds allow investors to participate in the long-term performance of the broader market.

Risks of Index Mutual Funds

Index funds also carry certain risks:

  • Market risk

If the overall market declines, index funds will typically fall along with the index.

  • Tracking error

Small deviations may occur between the fund’s performance and the benchmark index.

  • Sector concentration

Some indices may have heavy exposure to specific sectors or companies.

Frequently Asked Questions

Yes, you can SIP in an index fund. You can do this easily on INDmoney. From daily, weekly, or monthly frequencies, set a SIP in an index fund.

Yes, any gain from an index fund is taxable. Your tax treatment would depend on how long you have held the fund for. If you sell your investment within 12 months, it is treated as Short-term Capital Gain (STCG). When you sell your investments after 12 months, it is treated as Long-term Capital Gain (LTCG).

Index funds mirror a benchmark like Nifty 50 or Sensex. Since they do not make active stock picks and simply hold the same stocks in the same proportion as the index, the portfolio stays broad and diversified. This reduces fund manager related risk and limits sudden performance swings. That is why index funds often feel steadier compared to actively managed equity funds.

Index funds reflect the market exactly. They fall when the market falls but they also recover with the market without any delay. Since there is no stock picking risk, many investors prefer them during volatile phases because the fund will never make concentrated bets that can worsen the downside.

Rebalancing follows the schedule of the underlying index. Whenever the index adds or removes stocks, the fund adjusts its portfolio accordingly. This is why holdings stay aligned with the benchmark at all times.

It depends on your diversification needs. A mix of large cap, mid cap and global index funds can broaden your portfolio. At the same time, holding too many funds tracking the same index does not add value. One well chosen fund per index is usually enough.

Index funds are designed to match the index, not beat it. Over long periods, some active funds may outperform due to superior stock selection. However, many active funds also underperform the index. Index funds remove the uncertainty of manager performance and deliver returns that closely follow the benchmark, which is why many investors prefer them for long term wealth building.

Index funds have a simple job. They only track an index and do not engage in research driven stock picking. This reduces fund management costs. As a result, the expense ratio is typically much lower than that of actively managed equity funds. This cost advantage often becomes meaningful over many years.

A simple starting point is to keep index funds as the core of your equity exposure since they offer broad diversification at a low cost. Many investors choose to allocate fifty percent or more to index funds, then add active funds or thematic strategies depending on risk appetite. Your exact mix should reflect your time horizon, risk comfort and how much volatility you are prepared to handle.

Small differences can come from tracking error, which is the gap between the fund’s performance and the index. Tracking error depends on cash holdings, rebalancing practices, fund size and expense ratio. Lower tracking error usually means the fund stays closer to the index’s actual returns.

Not entirely. While the portfolio is similar, each fund house may differ in tracking error, AUM size, liquidity, and the expense ratio. These factors affect your long term outcome. Choosing a fund with low cost and low tracking error generally leads to a smoother investment experience.

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