Choose the index first, then compare funds that track that same index using current total expense ratios (TER), tracking error and tracking difference over matching periods. Tracking error measures how consistently a fund follows its benchmark; tracking difference shows the return gap actually achieved. Neither metric alone identifies a universally best fund, and scheme costs and tracking records can change.
Start by choosing the exposure you want
An index mutual fund aims to replicate a specified index. Its goal is to match the index, not outperform it; expenses and implementation frictions can leave its returns below the benchmark. SEBI’s investor material on index mutual funds explains this structure.
As an Amazon Associate I earn from qualifying purchases.
“Nifty index fund” does not identify one exposure. Confirm the exact index in the scheme name and documents before comparing funds. For example, the Nifty 50 is a diversified index of 50 stocks across 13 sectors. NSE reported that it represented about 53.73% of the free-float market capitalization of NSE-listed stocks as of March 30, 2026. Those figures describe the index, not a particular fund’s results or suitability.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Understand tracking error and tracking difference
Tracking error: consistency of the return gap
Tracking error is the standard deviation of the differences between a fund’s periodic returns and its benchmark’s returns over a stated period. In other words, it describes how much that return gap has varied—not the average size of the shortfall. A lower tracking error indicates more consistent tracking, but does not by itself mean the fund had higher returns.
#1 Best Overall
SEBI’s definition describes the statistical measure. NSE says tracking error is calculated against the Total Returns Index (TRI), which includes dividends, and describes its calculation as annualized. Compare a scheme’s tracking error with its stated TRI benchmark, not an index measure that excludes dividends. See NSE’s tracking-error methodology.
Tracking difference: the realized return gap
Tracking difference is the annualized difference between a scheme’s return and its benchmark’s return over a selected horizon. It indicates how far apart the returns were over that period; it is not the same as tracking error. Review both measures: tracking difference shows the realized gap, while tracking error shows how variable that gap was.
AMFI’s tracking-data page lets users select a mutual fund and tracking date to look up both measures. Scheme disclosures can present periods and frequencies differently, so read the relevant AMC disclosure and confirm what dates and return basis it uses.
Compare funds on a like-for-like basis
Use the same benchmark, return basis, dates and horizons for every scheme in your comparison. A practical checklist is:
- Same index: Compare Nifty 50 funds with Nifty 50 funds, not with funds tracking a different Nifty index.
- Same benchmark basis: Check that the comparison uses the relevant Total Returns Index, including dividends.
- Matching dates and horizons: Review rolling tracking error and tracking difference over one, three and five years and since inception where the disclosures provide them. Do not compare a recent statistic for one fund with a much older period for another.
- Current plan and costs: Identify whether each figure refers to a direct or regular plan, and verify the latest TER rather than relying on an old factsheet.
Disclosure formats vary. For example, a UTI Nifty Next 50 ETF scheme document describes daily disclosure of rolling one-year tracking error and monthly tracking difference for one, three, five and ten years, and since allotment. It says the calculations consider portfolio returns net of TER and that direct and regular index-fund plans are disclosed separately. This is an illustration of one scheme’s disclosure mechanics, not a comparison of Nifty 50 funds.
Use TER as a cost check, not the whole decision
TER matters because recurring scheme expenses reduce the return available to investors. But the lowest TER does not automatically identify the fund that tracked its index most closely: realized results can also reflect transaction costs, cash balances, investor flows, corporate actions and index changes. NSE lists these among factors that can contribute to tracking mismatch. Consider current TER alongside multi-year tracking difference and tracking error over comparable periods.
Rank #4
Figures in factsheets need careful interpretation. A Franklin Templeton India factsheet accessed October 7, 2026, listed base expense ratios of 0.55% for Franklin India NSE Nifty 50 Index Fund and 0.24% for its direct variant, plus three-year tracking error of 0.13%. The factsheet says its base expense ratio excludes brokerage, transaction costs and statutory levies charged at actuals. These dated figures are an example, not current all-fund comparison data or a statement of total investor costs; verify the scheme’s latest TER and disclosures before deciding.
Free tools Windows power users keep installed
One-click scans. No signup required.
Choose direct or regular based on how you invest
Direct and regular plans of the same scheme share the portfolio and fund manager but have different expense ratios. A direct plan excludes distributor or agent costs; it also means the investor makes the scheme-selection and execution decisions. A regular plan uses the distributor route. The choice is therefore not simply a different portfolio: consider whether you want to select and manage the investment yourself or value assistance with those decisions.
AMFI explains the distinction and notes that investors who need guidance may seek distributor assistance or professional advice from a registered investment adviser. Read AMFI’s explanation of direct plans.
If you are considering an ETF instead
An ETF is an exchange-traded product, so fund tracking statistics do not tell the whole execution story. You also need current information about trading liquidity and the price at which the ETF trades relative to its value. The figures above do not establish current liquidity or premium-and-discount comparisons for individual ETFs; check current, scheme-specific market data rather than assuming an ETF is interchangeable with an index mutual fund for every transaction.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problems
