Index Mutual Funds India 2025: Low-Cost Investing Made Simple
With a 48% growth, the number of index mutual funds in India increased to 341 in August 2025 from 230 schemes in 20241. However, what are stock market index funds?
Mutual funds that strive to replicate the performance of market indices, like the BSE Sensex, Nifty 50, etc., rather than outperform them, are called index mutual funds in India. An X Nifty 50 index fund, for instance, will allocate its corpus to the same 50 equities in the same proportion as the Nifty 50 index. As a result, the index fund will grow by 10% if the Nifty 50 rises by 10%.
These passive mutual funds in India seek to follow the market and duplicate its performance, as opposed to actively managed funds that try to beat it. This results in a less intense operation of fund managers, diminishing costs, risks and simplifying investment. Thus, justifying their growing popularity.
This blog decodes index funds, one of the low-cost mutual funds in India, amidst their growing popularity.
How Does Index Mutual Funds India Work?
Index mutual funds follow passive investing in India. It means that the index fund investment strategy is to track a particular market index and, rather than outperforming it, the fund strives to replicate its performance. Therefore, there are two aspects of operations undertaken by the index mutual funds in India. Let us decode them.
- Tracking Market Indices: An index is a measure of how a particular group of instruments, depicting a section of a market, is performing. An index mutual fund tracks a particular index and aims to replicate its performance by constructing its portfolio in a particular manner.
- Portfolio Construction: To match the performance of the index, an index fund constructs its portfolio to include the same stocks as the index and in the same proportion.
The illustration below can simplify the concept.
The table below compares the portfolio of DSP Nifty 50 Index Fund and the actual Nifty 50 Index through some of its stock holdings.
An Index Fund Portfolio India: Analysed
| Particulars | DSP Nifty 50 Index Fund | Nifty 50 |
| Total Number of Funds | 50 | 50 |
| Stock Name | Weightage in DSP | Weightage in Nifty 50 |
| HDFC Banks Ltd. | 13.08% | 13.01% |
| ICICI Bank Ltd. | 8.98% | 8.51% |
| Infosys Ltd. | 4.69% | 4.77% |
Source: Moneycontrol2
After tracking the portfolio allocation of Nifty 50, DSP Nifty 50 Index Fund provided a three-year return of 14.22%, while the one-year return of Nifty 50 was 14.50%3. Index funds have many other acute benefits as well.
Benefits of Index Fund Investing
Discussed below are some key advantages of passively managed index funds.
1. Cost-Effective: Index Mutual Funds are passively managed funds, meaning their fund managers replicate the allocation and investing pattern of a particular stock, rather than actively monitoring and selecting assets on their own. This diminished role of fund managers results in expense ratios and management fees. Therefore, a greater return corpus is available for distribution among shareholders.
2. Diversification with Index Funds: Index mutual funds construct their portfolio by replicating a particular index. This automatically results in diversification across industries and sectors, especially in the case of broad market indices. This reduces risk and helps investors optimise their investment.
3. Long-Term Investing India: Market indices mirror the inherent nature of a market. Therefore, indices of sophisticated markets can provide long-term growth irrespective of short-term volatility. The buy-and-hold passive investment strategy of equity index funds in India aids in portfolio growth over time.
Let us now compare Index funds and Actively Managed Funds in India to crystallise the understanding of these funds.
Index Fund vs Active Fund
It is important to note that all mutual funds, whether actively managed or index funds, have a benchmark index. However, from July 2024 to July 2025, only 33% of active funds could outperform their counterpart index funds based on the asset-weighted returns4.
The table below analyses the index fund returns in India by comparing the highest return recorded by an index fund with the highest returns of active funds.
| Period | Index Fund | Large-Cap Fund | Small-Cap Fund |
| Motilal Oswal BSE Enhanced Value Index Fund | Nippon India Large Cap Fund | Bandhan Small Cap Fund | |
| 3 Year Return | 35.99% | 20.73% | 30.55% |
| Motilal Oswal Nifty Smallcap 250 Index Fund | Nippon India Large Cap Fund | Quant Small Cap Fund | |
| 5 Year Return | 27.48% | 25.82% | 35.16 |
Source: Moneycontrol5
The reason for this outperformance might be related to the lower expense ratio. Now, let us also understand the category average risk measure of index funds.
| Parameter | Three-Year (%) |
| Standard Deviation | 14.4577 |
| Sharpe Ratio | 0.6561 |
| Sortino Ratio | 1.0524 |
Source: Morningstar6
From Nifty index funds India to Sensex index funds India, there is a range of such funds. While we have discussed the salient features of these funds, how to invest in them is still up for discussion.
Steps For Index Mutual Fund Investment
Investors can use a lump sum or an SIP in index funds to invest. This helps not only in easy investing but also in analysis.
Discussed below are some steps involved in it.
Step 1: Visit a particular AMC or Investment Platform.
Step 2: Fill out the KYC form using PAN, bank details, etc.
Step 3: Select a particular fund after analysing your investment goals, fund-specific metrics, tax on index funds in India, etc.
Step 4: You can then choose a lump sum or an index mutual fund SIP in India.
Step 5: Once you specify the details and make a payment, your mutual fund investment is complete.
Index Funds vs Debt Funds in India
While index funds and debt funds both form integral parts of a diversified portfolio, they serve different purposes and suit different investor profiles.
| Particulars | Index Mutual Funds | Debt Mutual Funds |
| Nature of Investment | Equity-oriented, track market indices like Nifty 50 or Sensex | Fixed-income oriented, invest in bonds, debentures, and government securities |
| Objective | Replicate the market’s performance for long-term capital appreciation | Generate stable income with lower volatility |
| Risk Level | High (subject to market fluctuations) | Moderate to low (depends on credit quality and duration) |
| Ideal For | Investors seeking long-term growth and market exposure | Investors looking for steady returns and capital preservation |
| Expense Ratio | Low due to passive management | Moderate, depending on fund strategy |
| Return Pattern | Linked to stock market performance | Linked to interest rate movements and bond yields |
In short:
- If your goal is long-term wealth creation, index funds mirror market performance at minimal cost.
- If you prefer consistent income and lower volatility, debt funds offer a more stable route.
Conclusion
Index mutual funds in India stand out in 2025 as the ultimate low-cost, competitive choice for investors seeking market-matching returns, broad diversification, and consistent long-term growth, with streamlined management and expense ratios as low as 0.17% to 0.44%.
These passive funds continue to gain momentum versus actively managed schemes, offering simple, transparent investing and efficient wealth-building for those prioritising value and stability in their portfolio
FAQs On Index Mutual Funds India 2025
1. How is passive investing different from active investing?
While actively managed mutual funds aim to outperform their benchmarks or market indices, passive funds aim to replicate index performance through similar portfolio allocation.
2. Why are index mutual funds becoming popular in India?
Index mutual funds are becoming popular in India because they maximise returns by reducing expense ratios and other costs. Moreover, current data shows passive funds often outperforming active funds.
3. How do index mutual funds track market indices?
Index mutual funds track market indices by investing in the same stocks as the index and in the same proportion. This helps in achieving similar growth.
References:
1. Financial Express, accessed from: https://www.financialexpress.com/market/index-funds-rise-48-in-one-year-3978778/
2. Moneycontrol, accessed from: https://www.moneycontrol.com/mutual-funds/dsp-nifty-50-index-fund-regular-plan/portfolio-overview/MDS1528
3. NiftyIndices, accessed from: https://www.niftyindices.com/market-data/return-profile
4. CNBC, accessed from: https://www.cnbc.com/2025/09/05/active-funds-struggle-to-beat-index-funds.html
5. Moneycontrol, accessed from: https://www.moneycontrol.com/mutual-funds/performance-tracker/returns/index-fundsetfs.html
6. Morningstar, accessed from: https://www.morningstar.in/tools/mutual-fund-category-risk-measures.aspx
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