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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteFor a long-term SIP in an Indian equity mutual fund, an index fund is often the simpler starting point: it aims to track a stated index, typically with less portfolio discretion, while an actively managed fund relies on a manager to try to outperform its benchmark. Neither choice guarantees a good outcome. Compare schemes in the same category, account for the exact plan’s costs, and check an index fund’s tracking quality or an active fund’s benchmark-relative record and process. SIP describes how you contribute—not which strategy you invest in.
What the comparison is—and is not
An index mutual fund aims to replicate a particular market index, often by holding all or most of its securities in similar proportions. Its objective is to match that index, not beat it. Expenses and operational factors can cause the fund’s return to differ from the index’s return.
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An actively managed fund gives a manager discretion to select investments and set portfolio weights in an effort to outperform a relevant benchmark. It may therefore differ from the benchmark in both holdings and risk. A fund should be judged against a benchmark and category that fit what it invests in, rather than against whichever broad market index happens to be familiar.
A Systematic Investment Plan (SIP) is a way to invest a fixed amount in a mutual fund scheme at recurring intervals, such as monthly. It can be used with either an index fund or an actively managed fund. It is not a third investment strategy, a guarantee of gains, or a way to remove equity-market risk. The scheme and provider determine available dates, amounts, and operating terms, so check their current instructions rather than assuming a general example applies to every SIP.
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How to read the evidence on active-fund performance
S&P Dow Jones Indices’ SPIVA India Year-End 2025 scorecard reports historical active-fund performance against category benchmarks. For the ten years ending December 2025, it reported that 76.3% of Indian Equity Large-Cap funds underperformed the S&P India LargeMidCap; 82.9% of Indian ELSS funds underperformed their benchmark; and 79.0% of Indian Equity Mid-/Small-Cap funds underperformed their benchmark. These are category-level historical results, not the return an investor would have earned through a SIP in a particular scheme, and not a forecast that any individual fund will lag.
| SPIVA India category | Period measured | Reported active-fund underperformance |
|---|---|---|
| Indian Equity Large-Cap | 10 years ending December 2025 | 76.3% versus the S&P India LargeMidCap |
| Indian ELSS | 10 years ending December 2025 | 82.9% versus the category benchmark |
| Indian Equity Mid-/Small-Cap | 10 years ending December 2025 | 79.0% versus the category benchmark |
| Indian Equity Mid-/Small-Cap | One year in 2025 | 12.1% versus the category benchmark |
The short-period result is a useful warning against treating one year as a verdict: only 12.1% of Indian Equity Mid-/Small-Cap funds underperformed during 2025, while 79.0% underperformed over the decade ending that year. A period in which many active funds do well does not establish that the same funds will continue to do so, just as a long-period aggregate does not prove that every active manager failed.
As a separate historical comparison, S&P Dow Jones Indices’ SPIVA India Year-End 2024 scorecard reported ten-year underperformance rates of 74% for active Indian Equity Large-Cap funds and 88% for active Indian Equity Mid-/Small-Cap funds over the ten years ending December 2024. Those figures cover a different period from the 2025 results. They should not be combined or treated as measurements of one unchanged decade.
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SPIVA is evidence about groups of funds and their benchmarks, not a method for selecting tomorrow’s winners. Its results need to be read with the category definitions, benchmark, measurement dates, fund survival information, and the report’s past-performance caveat. They do not tell you the net result of your own SIP, which also depends on the chosen scheme, its plan expenses, contribution dates, and redemption timing.
What an index fund does—and what it does not do
An index fund is a rules-based way to get exposure to the index named in its scheme documents. The index itself may represent a broad market, a sector, an international market, or a theme. The word “index” alone does not tell you whether a fund is broadly diversified or whether its exposure fits your needs; inspect the underlying index and its holdings.
The fund’s return is not automatically identical to the index’s return. The fund incurs expenses, and implementation can create divergence. For an index scheme, compare its results with its own stated benchmark over matching periods and examine its current tracking disclosures. Tracking error describes variation in the difference between portfolio and benchmark returns; it is not the size of the investor’s future return and does not measure whether the underlying market is safe. Where available, tracking difference—the realized gap over a stated period—can help show how closely the fund’s result matched the index over that interval.
A low tracking error is not a promise of low losses. If the index falls, an index fund designed to follow it will generally be exposed to that fall, subject to its actual holdings and tracking. A sectoral or thematic index can also be concentrated even when the fund follows its benchmark faithfully.
What active management adds—and what to scrutinize
An active fund can depart from its benchmark through security selection and portfolio weights, within its mandate. That discretion can produce outperformance or underperformance. A strong recent result is not enough to establish that an active fund has a repeatable advantage: results can reflect the market environment, risk taken, or a period that is too short to assess consistency.
Review results after expenses across multiple periods, preferably including rolling periods and different market conditions, against the scheme’s relevant benchmark and category. Also examine portfolio risk, material changes to the manager or investment process, and whether the fund’s current approach remains consistent with its stated mandate. The SPIVA figures above describe category groups; they do not identify a reliable shortcut for finding a future winning manager.
Compare schemes on the same decision criteria
| Decision factor | Index mutual fund | Actively managed mutual fund |
|---|---|---|
| Investment aim | Replicate a named index, not outperform it | Seek to outperform a relevant benchmark through permitted active decisions |
| Portfolio decisions | Primarily follow the index’s constituents and weights, subject to implementation | Manager selects investments and determines portfolio weights within the scheme mandate |
| Useful performance check | Compare net scheme performance with its exact benchmark; review tracking error and tracking difference when disclosed | Compare after-expense performance with the relevant benchmark and category over multiple periods |
| Main interpretation risk | Assuming the fund must equal the index, or that every index provides broad diversification | Assuming a recent winner will keep winning, or treating category averages as an individual-fund forecast |
| Costs to inspect | Current TER for the exact scheme and plan | Current TER for the exact scheme and plan |
Make the comparison like for like. A large-cap index scheme and a small-cap active scheme are not interchangeable options simply because both are equity mutual funds. Establish the category and the benchmark first; then compare relevant funds within that frame. A suitable total-return benchmark is important because it represents the comparison appropriate to the scheme, rather than a broad headline index chosen for convenience.
- Category and exposure: Identify what the scheme owns or is designed to own. Check whether exposure is broad-market, sectoral, thematic, international, or otherwise concentrated.
- Benchmark: Confirm the scheme’s stated benchmark and use it for performance comparisons. Do not judge an active scheme against an unrelated index.
- Net performance: Look at returns after scheme expenses over common periods. For active funds, test consistency across more than one trailing period; for index funds, also measure the gap to the tracked index.
- Portfolio risk and process: Consider the holdings and risk taken, not just a return ranking. For active funds, examine manager and process continuity; for index funds, understand the index rules and concentration.
- Plan and assistance: Decide whether you are comfortable selecting and executing the investment yourself or want distributor assistance through a regular plan.
- Personal fit: Match the scheme’s risk to your horizon, cash-flow needs, and ability to tolerate drawdowns. A long horizon does not eliminate equity risk.
TER and direct versus regular plans
The Total Expense Ratio (TER) is the scheme’s operating cost, expressed as a percentage of average net asset value (NAV). Expenses are deducted in calculating NAV, so the return experienced through the scheme reflects those costs. TER varies by scheme and plan; there is no single generic rate that can accurately describe all index or active funds. Check the current disclosure for the exact scheme and plan. AMFI says TER disclosures are made daily.
Direct and regular are plan choices, not alternatives to index and active management. AMFI states that the two plans of a scheme have the same portfolio and manager but different expense ratios. A direct plan does not involve a distributor or agent; a regular plan includes that distribution route. Lower expenses can benefit net returns over time, but a direct plan means the investor takes responsibility for scheme selection and execution. A regular plan may suit someone who values distributor assistance. Neither is universally right, and the strategy comparison should be made separately from the plan comparison.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to make the choice for a long-term SIP
- Set the purpose and risk level. Decide what the money is for, when you may need it, and how much equity-market volatility you can tolerate. Do not infer suitability from the fact that contributions are monthly.
- Choose an exposure category. Decide what kind of market exposure fits the purpose before choosing active or index implementation. A broad-market fund, a sector fund, and a thematic fund can carry materially different concentration risks.
- Match the benchmark. For any candidate, identify its category and stated benchmark. Compare only schemes with reasonably comparable mandates and risks.
- Compare the right performance evidence. For an index scheme, examine net performance against its own index and its tracking disclosures. For an active scheme, review benchmark-relative results after expenses over multiple periods, portfolio risk, and process continuity. Treat historical returns as evidence, not a promise.
- Check the exact plan’s TER. Verify current direct or regular plan expenses in the scheme’s and AMFI’s disclosures. Do not substitute a market-wide assumption for a current scheme figure.
- Confirm the SIP’s operating terms. Review the available contribution amount, interval, dates, payment instructions, and scheme terms with the provider. These details are not universal.
- Keep records of instalments. Each SIP payment buys units on its own date. Preserve transaction statements so that a future redemption can be assessed by acquisition lot.
For an investor who wants transparent exposure to a specified index and is comfortable making scheme and plan decisions, an index fund can be a straightforward choice to evaluate. Someone considering active management should be prepared to assess the fund against a suitable benchmark and monitor whether the investment process remains credible; the possibility of outperformance does not itself establish that a particular scheme merits selection. Either route still requires choosing an appropriate asset allocation and accepting the risks of the underlying investments.
Tax and SIP redemption lots in India
Tax treatment depends on the fund’s classification, the transfer date, the investor’s circumstances, other gains, and the rules then in force. The Income Tax Department’s capital-gains guidance describes a 12-month holding period for equity-oriented mutual fund units to qualify as long-term. A SIP is made up of purchases on different dates, so units acquired in one instalment can have a different holding period from units acquired in another. A redemption should not be treated as though the entire SIP investment had one purchase date.
The Department’s AY 2026–27 guidance refers to a ₹1,25,000 section 112A threshold in material about return eligibility. That is a filing-context threshold, not a universal tax-free allowance and not a complete capital-gains calculation. Check the current official rules applicable to the transfer and your circumstances, and seek qualified tax advice when you need an individualized calculation.
Quick Recap
Common mistakes to avoid
- Calling an SIP a strategy: The SIP is the contribution method; the scheme’s holdings and mandate determine the investment exposure.
- Reading SPIVA as a forecast: Historical category percentages are not the future result for an individual fund or investor.
- Comparing unlike schemes: A comparison across different categories or benchmarks can confuse differences in risk with differences in management skill.
- Equating index return with fund return: Fund expenses and operating factors affect the result received through an index scheme.
- Assuming every index is diversified: Inspect the index; sectoral and thematic indices can be concentrated.
- Choosing from a one-year ranking: A single period can look very different from a decade, as the 2025 SPIVA mid-/small-cap figures demonstrate.
- Confusing plan with strategy: Direct versus regular concerns distribution and expense ratio; index versus active concerns how the portfolio is managed.
- Using one tax holding date for the whole SIP: Instalments were acquired on different dates, so lot-level holding periods may differ.
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