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Both index mutual funds and exchange-traded funds (ETFs) can provide exposure to an index. The main difference is how you buy and sell them: index mutual funds transact through mutual-fund channels at the applicable NAV, while ETF units trade on an exchange at market prices during trading hours. Compare the exact schemes’ ongoing expenses and tracking records, then include any brokerage and demat or account charges before choosing.
How index mutual funds and ETFs work
An index mutual fund seeks to track an index by holding all or most of its securities in similar proportions, according to SEBI’s explanation of index mutual funds. An ETF is also a fund that tracks an index, but its units trade on a stock exchange; see SEBI’s ETF explainer.
The distinction is the transaction route, not whether the fund is actively managed. Both aim to follow a benchmark, but each scheme has its own costs and tracking results.
How buying and selling differ
Index mutual fund: transact at NAV
You buy or redeem units through a mutual-fund transaction channel at the applicable NAV. For conventional mutual-fund transactions, the NAV is published at the end of each trading day, rather than being an exchange price you can trade against intraday. The NSE comparison of ETFs and other mutual funds explains this distinction.
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ETF: place an exchange order
You buy or sell ETF units through an exchange order during trading hours. The execution price is the market price, which can move during the session and may differ from the fund’s underlying NAV. That can be useful if you want intraday execution, but it also means the price you receive depends on the market and your order. SEBI’s ETF explainer describes exchange trading and the possibility of a market-price difference from NAV.
Compare the full cost, not just the expense ratio
The total cost depends on the exact scheme and how you transact. A scheme’s total expense ratio (TER) is an important recurring cost, but it is not necessarily an ETF investor’s only cost. SEBI identifies brokerage and demat charges, where applicable, as additional ETF costs. These depend on the broker and account terms, so calculate them using your own charges and expected transaction size and frequency.
AMFI says scheme TER is disclosed daily. Check the current figures for the specific funds you are considering using AMFI’s TER page and the relevant AMC disclosures; do not rely on an old comparison or ranking. AMFI’s expense-ratio guidance provides further context.
- Index mutual fund: compare the current scheme TER and any scheme-specific charges.
- ETF: add the current scheme TER to brokerage and any applicable demat or account charges.
- For either route: assess costs for your actual investment amount and transaction frequency, not a hypothetical investor’s.
Why tracking matters alongside fees
A lower TER does not, by itself, prove that a fund follows its index more closely. SEBI defines tracking error as the divergence between portfolio returns and benchmark returns. Implementation and operational factors also affect realized tracking. Compare both tracking error and tracking difference where the fund’s disclosures provide them, using the same benchmark and comparable periods. They are different measures, and a single snapshot is not enough to establish that one scheme is consistently better.
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Access, accounts and practical use
ETF units are held in demat mode, according to AMFI’s scheme information. Buying and selling them also involves exchange trading access. Index mutual funds can instead be transacted through mutual-fund channels, which may suit investors who prefer that workflow or want to automate contributions through their chosen platform.
SEBI notes that ETF units are not available in fractional units. Consider the minimum amount you can invest, the order controls and liquidity available for the specific ETF, and whether you are comfortable placing exchange orders. Convenience depends on your existing accounts and investing habits, not just the product label.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which route may suit you?
| What matters to you | Index mutual fund | ETF |
|---|---|---|
| How transactions work | Mutual-fund transaction at the applicable NAV | Exchange order at a live market price |
| Access and holding | Mutual-fund transaction channel | Exchange trading access; units held in demat mode |
| Costs to compare | Current scheme TER and any scheme-specific charges | Current scheme TER, brokerage and applicable demat or account charges |
| Tracking assessment | Scheme-specific tracking error and tracking difference | ETF-specific tracking error and tracking difference; market price may also differ from NAV |
| Potential fit | You value a mutual-fund transaction workflow | You already use exchange trading and value intraday execution |
These are starting points, not universal rules. Compare candidates tracking the same index, then weigh their current TER, tracking record, ETF liquidity and any account costs against your preferred way to invest. A different scheme or transaction pattern can change which route is more suitable.
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Do not assume that the wrapper alone gives an index mutual fund or ETF a tax advantage. The Income Tax Department’s ITR-2 FAQ describes a 12-month long-term holding period for listed securities and units of equity-oriented mutual funds. Its ITR-2 manual points to Schedule 112A for sales of equity-oriented fund units on which securities transaction tax (STT) is paid. These statements do not determine the tax result for every index fund or ETF: classification, transaction details, holding period and current law all matter. Verify the rules that apply to your specific scheme and circumstances.
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