SEBI MF Lite framework opens the door to cheaper passive funds: what the lighter regime does to your net returns

When markets reward patience, cost is the one variable an investor fully controls. On 31 December 2024, the Securities and Exchange Board of India issued circular SEBI/HO/IMD/PoD2/P/CIR/2024/183, introducing the Mutual Funds Lite (MF Lite) framework, a lighter regulatory regime for passively managed schemes such as index funds and exchange-traded funds. The framework relaxes eligibility, net-worth and track-record norms for asset managers that intend to run only passive products, with the explicit aim of cutting costs and inviting new entrants into a segment that already commanded Rs 13.66 lakh crore in assets as of AMFI's October 2025 data, up 5.2 per cent on the month.

For the ordinary long-term investor, the policy shift matters for one reason: fee competition. A passive fund's job is to track an index; the less it charges to do so, the more of the index's gross return survives into your corpus. This article sets up a like-for-like contest for a 10-to-15-year wealth-building goal: a low-cost passive index fund or ETF under the emerging MF Lite era versus a conventional actively managed equity fund. Every figure below is either a verified rule or a clearly labelled illustration; we do not forecast fund returns, and we do not quote past performance as a promise.

Side-by-Side Comparison

The two products sit at opposite ends of the cost-and-effort spectrum. A passive fund mechanically replicates a benchmark such as the Nifty 50 or Sensex, so its success is measured by how tightly it hugs the index (its tracking error) and how little it charges (its expense ratio). An actively managed fund pays a research team to pick stocks in the hope of beating that benchmark, and it charges more for the attempt.

The MF Lite framework, notified via the SEBI circular dated 31 December 2024, does not by itself set a new fee cap. What it changes is the supply side: by easing net-worth and track-record requirements for sponsors that launch only passive schemes, it lowers the barrier to entry and is designed to intensify price competition in a segment that reached Rs 13.66 lakh crore of assets by October 2025 per AMFI.

Consider a lump-sum investment of Rs 10,00,000 held for 15 years. To isolate the effect of cost alone, assume both funds deliver the same 11 per cent gross annual return, an illustrative figure and not a forecast. A passive fund charging 0.20 per cent keeps a net 10.80 per cent; an active fund charging 1.25 per cent keeps a net 9.75 per cent, on the deliberately conservative assumption that the active manager merely matches, rather than beats, the index before fees.

That Rs 6.2 lakh gap over 15 years is produced by a fee difference of just 1.05 percentage points. It is the quiet, compounding drag that a lower expense ratio removes. You can run your own version of this exercise on the Oquilia lump-sum calculator or, for monthly contributions, the SIP calculator.

The caveat cuts both ways. Our illustration assumes the active manager matches the index gross return. A genuinely skilled manager who outperforms could close or reverse the gap; a laggard who trails the index widens it further. Passive investing does not promise higher gross returns, it removes the guessing and guarantees a lower cost drag.

Tax Treatment

Tax is where many cost comparisons quietly fall apart, so it deserves precise figures. Both an equity index fund and an actively managed equity fund are taxed identically under Indian law, because both are equity-oriented schemes. There is no tax advantage or penalty attached to the passive-versus-active choice itself.

Under Section 112A of the Income-tax Act 1961, long-term capital gains (units held longer than 12 months) on equity-oriented funds are taxed at 12.5 per cent, with the first Rs 1,25,000 of such gains in a financial year exempt, and crucially no indexation benefit is available. This regime took effect from 23 July 2024 under the Budget 2024 changes. Short-term gains (units held 12 months or less) are taxed at 20 per cent under Section 111A, also effective 23 July 2024.

Apply that to the 15-year illustration. On redemption, the passive fund's gain of Rs 36,56,895 first loses the Rs 1,25,000 annual exemption, leaving Rs 35,31,895 taxable at 12.5 per cent, a tax of Rs 4,41,487. The active fund's smaller gain of Rs 30,37,085 yields a tax of Rs 3,64,011 on the same basis.

The lower-cost fund still wins by roughly Rs 5.4 lakh after tax, because a larger gross corpus survives even after paying a proportionally larger 12.5 per cent levy. Note two practical points. First, the Rs 1,25,000 exemption is per financial year, so staggering redemptions across years can shelter more gains than a single-shot exit. Second, the absence of indexation on equity long-term gains means the 12.5 per cent rate applies to the full nominal gain, unlike some property or gold sales that retained a grandfathered 20 per cent-with-indexation route for assets acquired before 23 July 2024.

One more nuance for the high earner: capital gains under Sections 111A and 112A carry a surcharge that is capped at 15 per cent, even where slab income would otherwise attract a higher surcharge. In the new tax regime the top surcharge is 25 per cent, not the 37 per cent that once applied under the old regime. Always verify your marginal position against the slabs published at incometax.gov.in before finalising a redemption plan.

Who Should Pick Which

The MF Lite framework widens the passive menu, but the right choice still depends on your profile, your horizon and your tolerance for tracking a benchmark rather than trying to beat it.

Choose a low-cost passive fund if you have a 10-to-15-year horizon and you accept market returns rather than chasing outperformance. The 15-year illustration above shows a Rs 5.4 lakh post-tax edge from a 1.05 percentage-point fee saving, and that edge is durable precisely because it does not depend on a manager's skill. Large-cap allocations are the strongest case: in an efficient, heavily researched segment, consistently beating the Nifty 50 net of a 1.25 per cent fee is demonstrably hard. A first-time investor who wants a simple, rules-based core can anchor a portfolio in an index fund or ETF and add satellites later.

Choose an actively managed fund if you are investing in less efficient segments such as mid-caps, small-caps or thematic strategies, where a skilled manager has more room to add value above the benchmark, and you are willing to monitor performance and pay the higher fee for that potential. You should also prefer active management if you value downside management in falling markets, since an index fund will, by design, ride the benchmark down in full.

Consider a blend if you want a passive large-cap core for cost efficiency and a selective active allocation in mid- and small-caps. This barbell keeps overall costs low while retaining a shot at alpha where it is likeliest. For tax-saving needs specifically, remember that ELSS funds offer a Section 80C deduction of up to Rs 1,50,000 under the old regime with a three-year lock-in, a feature no plain index fund provides; and for comparison against a guaranteed alternative, the PPF currently pays 7.1 per cent for the July-September 2026 quarter, tax-free, but without equity's growth potential.

Whatever the split, size your equity exposure to your goal and your risk appetite, not to the product label. A cheaper fund that you panic-sell in a drawdown will underperform a costlier one you hold through the cycle.

FAQ

What exactly does the SEBI MF Lite framework change?

SEBI circular SEBI/HO/IMD/PoD2/P/CIR/2024/183, dated 31 December 2024, created a lighter regulatory regime for passively managed schemes (index funds and ETFs), relaxing eligibility, net-worth and track-record norms for asset managers that launch only passive products. The intent is to lower entry barriers and intensify cost competition in a passive segment that held Rs 13.66 lakh crore of assets as of AMFI's October 2025 data.

Are passive funds taxed differently from active funds?

No. Both equity index funds and actively managed equity funds are equity-oriented schemes, so both fall under Section 112A for long-term gains, taxed at 12.5 per cent above the Rs 1,25,000 annual exemption with no indexation, and Section 111A for short-term gains at 20 per cent. These rates have applied since 23 July 2024. The tax treatment does not favour either style.

How much can a lower expense ratio really add over time?

In our illustration, a Rs 10,00,000 lump sum growing at an assumed 11 per cent gross for 15 years ends at Rs 46,56,895 in a fund charging 0.20 per cent versus Rs 40,37,085 in one charging 1.25 per cent, a pre-tax gap of Rs 6,19,810. After 12.5 per cent LTCG under Section 112A, the passive edge is still about Rs 5,42,333. These are illustrative figures based on an assumed identical gross return, not a forecast.

Do index funds guarantee better returns than active funds?

No. A passive fund guarantees only a lower cost drag and index-tracking behaviour, not higher gross returns. A skilled active manager can outperform the benchmark, and a weak one can underperform it. The reliable advantage of passive investing is the fee saving, which compounds regardless of market direction; the tracking error tells you how faithfully the fund follows its index.

Can I claim a Section 80C deduction with an index fund?

No. Only Equity Linked Savings Schemes (ELSS) qualify for the Section 80C deduction of up to Rs 1,50,000, and only under the old tax regime, with a three-year lock-in. A plain index fund or ETF carries no such deduction. If tax saving under 80C is your goal, model the trade-off on the ELSS calculator before committing.

Does the Rs 1.25 lakh LTCG exemption reset every year?

Yes. The Rs 1,25,000 long-term capital gains exemption under Section 112A applies per financial year, across all your equity-oriented funds and listed shares combined. Redeeming in staggered tranches across financial years can shelter more of your gains than a single large redemption, subject to your liquidity needs and market timing risk.

Should I switch my existing active funds to passive because of MF Lite?

Not automatically. Switching triggers a redemption, and any long-term gain above Rs 1,25,000 in that year is taxed at 12.5 per cent, an immediate cost that can offset years of future fee savings. Weigh the exit tax against the expected fee reduction over your remaining horizon before moving, and consider phasing any switch to use multiple annual exemptions.