Mutual fund rules just changed: 3 things that really matter

Summary: SEBI's sweeping mutual fund reforms took effect on April 1, 2026. The cost savings are smaller than advertised, but buried inside the fine print are three changes that could quietly reshape your portfolio.

On April 1, 2026, India's mutual fund rulebook was rewritten for the first time in nearly 30 years. The headline is the death of the total expense ratio and the birth of the base expense ratio. The promise is lower costs and better transparency.

The reality is more modest. Your active equity fund will save you 5 to 7 basis points a year, not the 15 that the headlines suggested. The same costs are now shown on three lines instead of one. That matters, but it is not the story.

The real story is in three other changes that will reshape your portfolio over the next 18 months. Most investors will miss them.

What actually changed in costs

The board approved the framework on December 17, 2025. It became effective on April 1, 2026. The rulebook is shorter: 88 pages instead of 162.

Your old TER bundled fund management fees, brokerage and statutory levies into one number. Your new TER shows BER, brokerage, plus levies separately. The total looks similar. The composition is now visible.

Real savings come from three places. The five-basis-point allowance for schemes with exit loads is gone. Cash-market brokerage is capped at 6 basis points, down from 12. Derivative brokerage is capped at 2 basis points, down from 5. For most active equity funds, this amounts to 5 to 7 basis points per year. On a Rs 10 lakh investment, about Rs 600. Not nothing. Not the headline savings either.

The three changes that matter

#1 Truer-to-label categories: A separate SEBI circular now caps portfolio overlap at 50 per cent. No sectoral or thematic fund can share more than half its portfolio with any other equity scheme in the same AMC, except for large-cap funds. Thus, if your AMC's 'manufacturing' theme fund holds the same Reliance, L&T and Infosys as its flexi-cap fund, it has to fix that or face a mandatory merger. The days of the same wine, new label are numbered. Existing schemes get three years to comply, but watch the next two monthly disclosures for early signs of portfolio reshuffling.

#2 Mandatory portfolio overlap reports from August 2026: This is the most useful disclosure SEBI has introduced in years. Every AMC will publish monthly, how much each scheme overlaps with every other scheme in its stable.

The problem is real. Value Research data show that, within categories, overlap routinely runs 25 to 55 per cent, with some fund pairs touching 56 per cent. Across fund houses, holdings converge sharply in large-cap and flexi-cap categories, where the investable universe is narrow. Diversification in the statement, concentration in the holdings.

When the reports arrive in August, use them. The right number of funds is two or three with genuinely low overlap, not five that mirror each other. Before you add a new fund, check the overlap with what you already hold. If it is high, you are not buying diversification. You are paying twice for the same stocks.

#3 Performance-linked fees, optional but coming: AMCs can now charge a performance fee above a hurdle rate. Some will introduce premium share classes with a lower base fee and an upside cut. The American mutual fund industry has had this option since 1970. Fewer than 50 US mutual funds use it today, out of thousands.

Asymmetric performance fees give the manager an incentive to take more risk with your money. Symmetric ones give the manager a clean way to lose half their base fee. Neither does much for you. If any AMC writes to you about a new share class, read the hurdle rate, the high-water mark, and the catch-up provision before you opt in. Most retail investors should default to no.

Life cycle funds, and what stayed the same

A separate SEBI circular dated February 26, 2026, introduced ‘Life Cycle Funds’. These are target-date funds. You pick a maturity year, say 2050, and the fund automatically shifts from equity to debt as that year approaches. Exit loads of 3, 2 and 1 per cent apply for the first three years. Useful for long-horizon investors who do not want to think about asset allocation. But check the math. A 70:30 hybrid index combination may win after costs.

A great deal stayed the same. Your existing folios continue. SIPs continue. Cut-off times are unchanged. The tax treatment of equity versus debt remains the same. Direct plans remain cheaper than regular plans by the same margin. KYC is unchanged. If you read in the next few weeks that you must do something urgent, it is almost certainly noise.

Why the AMC stocks rallied

On December 18, 2025, AMC stock rose 3 to 7 per cent. Five months on, HDFC AMC is up about 8 per cent from its December close, Nippon Life about 17 per cent and Aditya Birla Sun Life AMC about 31 per cent. The market concluded that AMC margins were preserved better than the consultation draft had suggested. The cash-equity brokerage cap of 6 basis points, against the 2 basis points that SEBI's October 2025 paper had originally proposed, was the moment that flipped the trade.

The rally tells you who actually wins from the new framework. It is the AMCs. If costs are not falling much for the AMCs, they are not falling much for you.

What to do this month

#1 Pull the latest factsheet of every active equity fund you own. Compare its sector and top-10 holdings with what the SID promised. Note the drift. Watch it closely over the next two quarters.

#2 Mark August 2026 in your calendar. When the overlap reports arrive, sit with them. Most fund pairs in the same category will have 25 to 55 per cent overlap. Anything above 60 per cent indicates the second fund is not adding diversification. Aim for two or three funds with genuinely low overlap, not five that mirror each other.

#3 If an AMC writes to you about a new performance-linked share class, read the hurdle rate, the high-water mark, and the catch-up provision before you opt in. When in doubt, say no.

The headline reform is small. The structural reform is real. Track the second. Ignore the first.

Also read: Understanding SEBI's expense ratio and brokerage changes