The 25-25-25 rule: what SEBI's multi-cap mandate really means for your returns

SEBI's 25-25-25 rule is one of the most consequential pieces of mutual fund plumbing most investors have never read. Buried in circular SEBI/HO/IMD/DF3/CIR/P/2020/172, dated 11 September 2020, it re-wrote what a "multi-cap" fund is allowed to own, and in doing so it created a clean fork in the road for anyone building a long-term equity portfolio: a multi-cap fund with hard-wired exposure across the market, or a flexi-cap fund that leaves those calls to the manager. This piece sets multi-cap against flexi-cap for a single goal, a diversified long-term equity allocation, using only the rules on the books and the tax rates in force on 17 September 2026.

The distinction matters more now than it did in 2020. AMFI's July 2026 data put monthly SIP inflows at Rs 31,961 crore and total industry AUM above Rs 85 lakh crore, so the amount of retail money sitting in these two categories is no longer a rounding error. The label on the fund determines, by regulation, how much of your money is forced into small caps in a downturn. That is not a marketing nuance; it is a structural fact you can plan around.

Side-by-Side Comparison

Before the September 2020 circular, a "multi-cap" fund could hold almost anything and frequently ran 70-80% in large caps, making the category name close to meaningless. SEBI's fix was blunt: floors in every market-cap band. A multi-cap fund must now invest a minimum of 75% of assets in equity, with at least 25% each in large-cap, mid-cap and small-cap stocks. The flexi-cap category, which SEBI created on 6 November 2020 partly in response to the same debate, keeps a lighter mandate: a minimum of 65% in equity, with no minimum in any single band.

The practical reading of that table is this. In a multi-cap fund, at least 50% of the portfolio is permanently committed to the mid-cap and small-cap segments (25% plus 25%), which are the more volatile parts of the market. A flexi-cap manager who turns cautious can pull mid and small-cap exposure down towards zero and park up to 100% of the equity allocation in large caps. So the same word, "diversified", produces two very different risk shapes.

One consequence of the 25-25-25 floors is capacity. Small-cap stocks, by SEBI's definition drawn from AMFI's list, are those ranked 251st and below by full market-cap; they are thinner and harder to trade in size. A very large multi-cap fund forced to hold 25% in that segment can struggle to deploy without moving prices, which is one reason several of the largest 2020-era schemes chose the flexi-cap route when the category opened on 6 November 2020.

The 25-25-25 mechanics in a live portfolio

To see what the floors do to a real allocation, take a notional Rs 10,00,000 corpus in each fund type and hold the multi-cap at its exact minimums. The numbers below are the regulatory floors applied arithmetically, not a forecast of returns; run your own contribution schedule through the SIP calculator or the lumpsum calculator before committing capital.

Both columns respect their respective rules: the multi-cap sits at the 75% equity minimum with exactly 25% in each cap, and the illustrative flexi-cap keeps 65% in equity while tilting heavily to large caps. The difference in mid-plus-small exposure, Rs 5,00,000 versus Rs 1,50,000, is the entire debate in one row. Over a full market cycle that gap is what drives both the extra upside a multi-cap can capture in a small-cap rally and the deeper drawdown it can suffer in a correction.

A second mechanical point concerns rebalancing. Because the 25% floors are continuous obligations, a multi-cap fund that sees small caps run up must trim them to stay within its equity ceiling, and one that sees them fall must buy to restore the floor. That built-in "buy low, sell high" discipline is a feature, but it also means the fund cannot exit a falling small-cap segment the way a flexi-cap can. Keep an eye on the expense ratio as well, since higher-turnover mandates can carry higher costs that compound against you over a 10-year horizon.

Tax Treatment

Here the two categories converge, and this is the single most important thing for an investor to internalise: multi-cap and flexi-cap funds are taxed identically. Both hold well above the 65% domestic-equity threshold that defines an "equity-oriented fund", so both fall under the equity capital-gains regime that took effect on 23 July 2024 with Budget 2024.

So if you redeem after 18 months and book a long-term gain of Rs 2,25,000, the first Rs 1,25,000 is exempt and the remaining Rs 1,00,000 is taxed at 12.5%, a liability of Rs 12,500 before cess. Redeem the same units at 11 months and the entire gain is short-term, taxed at 20%. Note that unlike property and gold, equity funds get no indexation benefit, so inflation does not reduce your taxable equity gain. These rates are set out by the Income Tax Department and should be confirmed on incometax.gov.in before filing.

One tax feature neither category offers is a Section 80C deduction. That relief, capped at Rs 1.5 lakh a year and available only under the old tax regime for FY 2025-26, is reserved for ELSS funds with their three-year lock-in. If a deduction is your priority, model it separately with the ELSS calculator rather than assuming a multi-cap or flexi-cap fund will deliver it, because it will not. For retirement-specific tax breaks, the additional Rs 50,000 deduction under Section 80CCD(1B) applies to the National Pension System and, again, only under the old regime; you can size that with the NPS calculator.

Who Should Pick Which

The choice is not about which category is "better" in the abstract; it is about matching the fund's hard-wired risk shape to your own tolerance and horizon. The 25-25-25 rule takes a decision out of the manager's hands and hands it to the regulator, and whether that suits you depends on how you would have wanted that 50% mid-and-small allocation managed in a downturn.

A multi-cap fund suits an investor who actively wants disciplined, permanent exposure to the mid and small segments and has the stomach and the time horizon, ideally 10 years or more, to sit through the drawdowns those segments produce. Because at least 50% of the equity book is in mid and small caps, the ride will be rougher than the headline Nifty 100 in a correction, and that is the price of the potential extra upside in a broad rally.

A flexi-cap fund suits an investor who wants equity exposure but would rather trust a manager to dial risk up and down. It also tends to be the more sensible default for a first-time equity investor, because its ability to shift towards large caps in a nervous market usually means shallower drawdowns. As a portfolio construction note, you rarely need both: the holdings overlap heavily in the large-cap band, so owning one of each mostly duplicates risk without adding much diversification. Pick the risk shape you can hold through a bad year, size the contribution with a calculator, and leave it alone.

FAQ

What exactly is the 25-25-25 rule for multi-cap funds?

Under SEBI circular SEBI/HO/IMD/DF3/CIR/P/2020/172 dated 11 September 2020, a multi-cap fund must invest a minimum of 75% of its assets in equity, with at least 25% each in large-cap, mid-cap and small-cap stocks. That leaves only about 25% of the portfolio to the fund manager's discretion, which is why the category has such a distinctive, permanently broad risk profile.

How is a flexi-cap fund different from a multi-cap fund?

A flexi-cap fund, a category SEBI introduced on 6 November 2020, must hold a minimum of 65% in equity but has no minimum in any individual market-cap band. The manager can move freely across large, mid and small caps, so a flexi-cap can behave like a large-cap fund in a nervous market while a multi-cap must always keep at least 25% in small caps and 25% in mid caps.

Do multi-cap and flexi-cap funds pay the same tax?

Yes. Both are equity-oriented funds because they hold more than 65% in domestic equity, so both attract long-term capital gains tax of 12.5% above the Rs 1.25 lakh annual exemption for units held more than 12 months, and short-term capital gains tax of 20% for units held 12 months or less, per the rates that took effect on 23 July 2024.

Is a multi-cap fund riskier than a flexi-cap fund?

Structurally, on average, yes. The mandatory 25% small-cap and 25% mid-cap floors mean a multi-cap fund keeps at least half its equity in the more volatile mid and small segments at all times, whereas a flexi-cap can cut that combined exposure towards zero. Small-cap stocks, ranked 251st and below by market cap under AMFI's classification, historically swing far more than the large-cap Nifty 100.

Can I claim an 80C deduction by investing in a multi-cap fund?

No. Section 80C tax deductions of up to Rs 1.5 lakh a year apply only to ELSS funds, which carry a three-year lock-in. A plain multi-cap or flexi-cap fund does not qualify, and Section 80C is available only under the old tax regime for FY 2025-26.

Did any funds convert from multi-cap to flexi-cap after the 2020 rule?

Yes. After SEBI issued the 25-25-25 circular on 11 September 2020, several large schemes that had been running large-cap-heavy portfolios chose to re-classify as flexi-cap once SEBI created that category on 6 November 2020, rather than force large purchases of thinly traded mid and small caps to meet the new floors.

Where can I verify the rules and rates in this article?

The 25-25-25 mandate is set out in the SEBI circular dated 11 September 2020 on sebi.gov.in; the large, mid and small-cap boundaries follow the list AMFI publishes twice a year on amfiindia.com; and the 12.5% LTCG and 20% STCG rates, in force from 23 July 2024, are documented by the Income Tax Department on incometax.gov.in. Always confirm the current figures at the source before you invest.