Index funds or actively managed funds?

Last reviewed October 2026

The short answer

For the large-company part of your portfolio, an index fund is usually the sensible choice: it costs less, and most actively managed large-cap funds have not beaten the index over long periods. In mid-cap and small-cap funds, a good active manager has more room to add value, so a mix of the two often works best.

So it is rarely “one or the other”. What matters is which part of the market you are investing in, how long you will stay invested, and whether you are willing to review an active fund and change it if it falls behind.

What the difference really is

An index fund simply buys the shares in an index, such as the Nifty 50 or the Sensex, in the same proportions. Nobody is choosing stocks. Its job is to give you the market’s return, minus a small cost.

An actively managed fund has a fund manager and a research team picking stocks they believe will do better than the index. You pay for that effort through a higher expense ratio.

Why costs matter more than they look

Expense ratios sound tiny, but they are charged every year, on your whole balance, for as long as you stay invested.

Here is an illustration, not a forecast. Say you invest ₹10 lakh for 15 years, and the market grows at 11% a year before costs. If one fund costs 0.2% a year and another costs 1% a year, and both simply match the market before costs:

• The lower-cost fund grows to roughly ₹46.6 lakh.
• The higher-cost fund grows to roughly ₹41.8 lakh.

That is a gap of nearly ₹5 lakh, just from costs. To be worth its fee, the active fund has to beat the index by about 0.8% every year, year after year. Some do. Many don’t.

What the long-term record shows

S&P Dow Jones Indices tracks how Indian funds do against their benchmarks. Its report for the period ending June 2026 found that about 85% of large-cap funds trailed their benchmark over five years, and about 74% over ten years.

The picture is more mixed in mid-cap and small-cap funds. Over the latest one year, most of them did better than their benchmark, though over ten years most still fell behind. Smaller companies are less widely researched, so a careful manager has a better chance of finding something the market has missed. The catch is that you can’t know in advance which manager will be the one who does it.

India’s large companies are now very closely followed by analysts. When everyone is looking at the same 100 companies, it is hard for any one manager to stay ahead for long, which is why the index tends to win there.

What we’d usually suggest

• Use an index fund for your large-cap core. A Nifty 50 or similar index fund can be the steady base of a long-term portfolio.
• Consider active funds where they have more room to add value. Mid-cap, small-cap and flexi-cap funds are where a well-run active fund has a better case.
• Compare like with like. Judge an active fund against its own benchmark over five years or more, not against last year’s top performer.
• Look at tracking error, not just cost, in an index fund. Two index funds on the same index should behave almost identically. The better one is the one that stays closest to the index.
• Don’t switch just to chase a label. Selling an old fund can mean paying capital gains tax and an exit load. Index and active equity funds are taxed the same way, so the move only makes sense if the new fund is clearly better for you.

One honest note: as a distributor, we earn less on index funds than on active funds, because their costs are lower. We still suggest them where they are the better fit. You can read more about how we earn.

When it’s different

• If you want to beat the market, not match it. An index fund will never do better than its index. If you accept the risk of trailing it in return for a chance of doing better, active funds give you that chance.
• If falls worry you. An index fund falls fully with the market. Some active funds hold more cash or more defensive stocks and may fall less, though there is no guarantee.
• If you won’t review your funds. An active fund that slips needs to be noticed and replaced. If you would rather not do that, an index fund asks much less of you.
• Not every “passive” fund is simple. Smart-beta or factor index funds follow rules that can behave very differently from the broad market.

CurateMyMoney is an AMFI-registered mutual fund distributor (ARN-184811). Mutual fund investments are subject to market risks. Read all scheme-related documents carefully. Tax rules mentioned are as applicable at the time of writing and may change; please check the current rules or consult a tax professional before acting.