Which Are the Best Index Funds to Invest in India in 2026?

Last updated: 21 October 2026

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A reader wrote to HMA Wealth asking us to just “name the best index fund” so he could stop comparing factsheets and start investing. We understand the instinct, nobody wants to spend a weekend reading expense ratio disclosures, but the honest answer is that there isn’t a single universal winner. There are several genuinely strong options tracking the same index, separated by small but compounding differences in cost and precision. So instead of handing him one name, we walked him through exactly how to find the best index funds India actually has to offer for his specific goal, and that’s the same process this article walks you through.

What Actually Makes an Index Fund “Best” Rather Than Just Popular?

An index fund’s entire job is to copy its benchmark index as closely and as cheaply as possible, nothing more. Unlike an actively managed fund, there’s no fund manager trying to beat the market, so “best” here doesn’t mean highest past returns, since two funds tracking the same index will produce nearly identical returns before costs. If you’re not yet clear on how index funds sit alongside other categories, our mutual funds for beginners guide is a useful starting point before this comparison.

What actually separates the best index funds India has on offer from the mediocre ones comes down to three things: expense ratio, tracking error, and fund size. Our explainer on what expense ratio actually means is worth reading first if any of that sounds unfamiliar, since it’s the single biggest lever here.

What Are the Best Index Funds to Invest in India Tracking the Nifty 50?

The Nifty 50 is the most commonly tracked index among Indian retail investors, and several well-established fund houses offer a nearly identical product here. Names worth comparing on your own factsheet research include UTI Nifty 50 Index Fund, HDFC Index Fund Nifty 50 Plan, ICICI Prudential Nifty 50 Index Fund, SBI Nifty Index Fund, and Nippon India Index Fund Nifty 50 Plan. As one verified reference point, UTI’s Nifty 50 Index Fund direct plan currently carries an expense ratio around 0.25%, which sits within the broader 0.10%-0.40% range typical for large-cap index funds in India.

These figures move over time as AMCs adjust pricing, so treat any specific number here as a snapshot, not a permanent fact, and always confirm the current expense ratio directly on AMFI or the fund’s own factsheet before investing. If you’re new to how the Nifty 50 itself is constructed, our guide on understanding market indices is worth reading alongside this comparison.

What About Sensex Index Funds as an Alternative?

The BSE Sensex is the other major benchmark, tracking the 30 largest companies listed on the BSE rather than the Nifty 50’s broader NSE-listed 50. Funds like the HDFC Index Fund Sensex Plan and similar Sensex-tracking options from other AMCs function identically to their Nifty 50 counterparts in structure, just mirroring a slightly different, more concentrated basket of large-cap stocks.

For most retail investors, the choice between a Nifty 50 fund and a Sensex fund matters less than people expect, since the two indices overlap heavily in their top holdings, and the real decision again comes down to cost and tracking precision rather than which 30 or 50 companies are included. If you want the underlying basics of how these companies and their share prices actually work, our explainer on what the stock market is covers that ground first.

Are Nifty Next 50 or Nifty 500 Index Funds Worth Considering Too?

If you already hold a Nifty 50 fund and want broader exposure, Nifty Next 50 funds (such as those from HDFC, ICICI Prudential, and Kotak) track the 50 companies ranked just below the Nifty 50, essentially the next tier of large and emerging large-cap names. Nifty 500 index funds, like the Motilal Oswal Nifty 500 Index Fund, go even broader, covering large, mid, and small-cap companies in a single fund.

These aren’t necessarily “better” than a pure Nifty 50 fund, they carry a different risk and volatility profile, so the right choice depends on how much exposure you already have elsewhere in your portfolio. Our beginner’s guide to the different types of mutual funds covers how these categories relate to each other if this is new territory.

How Much Does Expense Ratio Actually Matter Here?

More than most first-time investors assume. A 0.15% difference in expense ratio sounds trivial, but compounded over 20 years on a meaningful SIP, it quietly eats into your final corpus in a way that’s easy to underestimate until you actually run the numbers. Since all funds tracking the same index deliver near-identical pre-cost returns, expense ratio is one of the few genuinely controllable variables when comparing the best index funds India has across any single benchmark. If you want to see exactly how a small percentage difference compounds over your own investment horizon, our SIP calculator is a useful way to run that comparison with real numbers instead of a vague sense that “it probably doesn’t matter much.”

What Is Tracking Error, and Why Should It Matter More Than Cost?

Tracking error measures how closely a fund’s actual returns mirror its benchmark index’s returns, after accounting for costs and cash drag. A fund with a lower expense ratio but sloppy tracking error can actually underperform a slightly costlier fund that replicates its index more precisely. This figure isn’t always prominently advertised, so you’ll usually need to check the fund’s factsheet or a platform like Value Research directly. For index funds specifically, tracking error and expense ratio together, not past returns, are what genuinely separate the best index funds India has to offer from merely adequate ones.

Direct Plan vs Regular Plan: Does It Change Which Fund Is Best?

Significantly, yes, and this is a mistake we see constantly. A direct plan skips the distributor commission that a regular plan carries, which typically means an expense ratio lower by 0.3%-0.6% for the exact same underlying fund and portfolio. Since an index fund’s entire value proposition is low cost, choosing a regular plan over a direct plan largely defeats the purpose of picking an index fund in the first place. If you’re investing through a platform like Zerodha Coin, Groww, or directly through the AMC’s own app, confirm you’re selecting the direct plan specifically, since some platforms default to regular plans unless you actively choose otherwise.

Should You Pick an Index Fund or an ETF Tracking the Same Index?

This is worth settling before you even start comparing specific funds. An index mutual fund and an index ETF can track the exact same benchmark, but they work differently in practice. A mutual fund lets you set up an automatic SIP directly with the AMC, while an ETF trades on the exchange like a stock, requiring a demat account and a buy order at the prevailing market price during trading hours, which also means a bid-ask spread that a mutual fund doesn’t have.

Our comparison of ETFs versus mutual funds on liquidity and our broader explainer on what an ETF actually is both cover this distinction in more depth.

For most retail investors building a long-term SIP, the mutual fund structure tends to be simpler to automate consistently, which matters more in practice than the marginally lower expense ratios some ETFs offer, since a fund you actually stick with every month beats a theoretically cheaper one you forget to top up.

How Do You Actually Measure an Index Fund’s Long-Term Performance?

Once you’ve shortlisted a few of the best index funds India has for your chosen benchmark, resist the urge to compare them using simple point-to-point returns over an arbitrary period, since the exact dates chosen can flatter or hide a fund’s actual consistency.

A more reliable approach is comparing their Compound Annual Growth Rate (CAGR) over multiple rolling periods, 3-year, 5-year, and since-inception, to get a fuller picture of how closely each fund has tracked its benchmark over time rather than cherry-picking a single favourable window. Our explainer on what CAGR actually means covers how to calculate and interpret this correctly if you haven’t used it before.

What Mistakes Do People Make When Choosing an Index Fund?

• Chasing last year’s best-performing index fund, when nearly identical funds tracking the same benchmark should produce nearly identical pre-cost returns over time
• Ignoring tracking error entirely and comparing only on expense ratio, missing the fuller picture of actual replication quality
• Accidentally investing in a regular plan, quietly paying a higher ongoing cost for no additional benefit
• Holding multiple index funds that track overlapping indices (like both a Nifty 50 fund and a Sensex fund) without realising the diversification benefit is minimal, since the underlying holdings overlap heavily
• Comparing an index fund to an actively managed fund purely on short-term returns, without factoring in that an index fund’s appeal is consistency and low cost over a long horizon, not short-term outperformance

If you want a broader view of common pitfalls beyond index funds specifically, our piece on common investing mistakes covers several of these from a wider angle.

How Do You Actually Compare and Choose for Yourself?

1. Pick your benchmark first (Nifty 50, Sensex, Nifty Next 50, or Nifty 500), based on how much market-cap breadth you want, not which fund name you’ve heard most often.
2. Shortlist 3-4 funds tracking that same benchmark from established AMCs with a reasonable fund size (lower liquidity risk) and a multi-year track record.
3. Compare expense ratios on the direct plan only, since that’s the version you should be investing in regardless.
4. Check tracking error on each fund’s factsheet or a platform like Value Research, favouring the fund that replicates its index most precisely, not just the cheapest one.
5. Confirm you have a demat and trading account set up correctly before investing; our guide on how to open a demat account in India walks through this if you haven’t already.
6. Decide between a SIP or lumpsum entry based on your own situation; our comparison of SIP vs lumpsum investment covers how to think through that separately from fund selection.

Where Do Index Funds Fit Into a Broader Investing Plan?

Index funds are rarely meant to be your entire portfolio, though for a genuinely hands-off, low-cost long-term approach, they can reasonably form its core. If you’re still working out the fundamentals of asset allocation, risk tolerance, and how this fits alongside other goals, our guides on how to start investing and building wealth over the long term are worth reading before committing a large portion of your portfolio to any single category, index funds included. Picking the best index funds India has to offer only matters once you’ve decided how much of your overall plan should sit in index exposure in the first place.

HMA Wealth built this comparison framework because genuinely picking the best index funds India offers isn’t about finding a secret top performer, it’s about correctly weighing cost and precision across a handful of funds that are all doing essentially the same job.

This article is educational content meant to help you understand how to evaluate and compare index funds, not personalised investment advice or a definitive ranking of any specific scheme.

Mutual fund investments are subject to market risks; read all scheme-related documents carefully before investing. Expense ratios, fund sizes, and tracking error figures change over time, so always verify current data on AMFI or the relevant fund factsheet before investing. SEBI’s investor education portal is also a useful resource for understanding mutual fund risk more broadly, and it’s worth consulting a SEBI-registered investment adviser for decisions specific to your own portfolio and goals.

At the end of the day, the best index funds India has to offer aren’t a secret list, they’re whichever handful of low-cost, low-tracking-error funds best match the benchmark exposure your own portfolio actually needs. Once you understand what you’re genuinely comparing, the decision stops being overwhelming and becomes a fairly mechanical five-minute factsheet check, which is exactly the outcome HMA Wealth wants readers walking away with instead of another unranked list of fund names.

FAQs: Best Index Funds India