Mutual Funds

Selecting Mutual Funds Based on Expense Ratio

SmartTheta Research Updated June 2026 8 min read

The expense ratio is the one cost almost every investor underestimates. You never get a bill for it — it's quietly skimmed from your fund's value every single day. Over a 20-year horizon, a 1% difference can quietly cost you lakhs. Here's how it actually works, what SEBI's 2026 rules changed, and how to screen funds the right way.

The quiet tax you never see

When you read that a fund returned 13% last year, that figure is already after the expense ratio. The fund house deducts its fee a little at a time, from the Net Asset Value (NAV), every working day. There's no invoice, no SMS, no line item — which is exactly why it's so easy to ignore.

The Total Expense Ratio (TER) covers fund management fees, administration, registrar and distribution costs. It's expressed as a percentage of the fund's average daily net assets, charged annually. A fund with a 1.8% TER quietly takes 1.8% of your invested value each year, regardless of whether the fund went up or down.

What changed in 2026

From 1 April 2026, SEBI restructured the framework: TER is being replaced by the Base Expense Ratio (BER), which is purely the AMC's management fee. Statutory levies (GST, STT, stamp duty, exchange and SEBI charges) are now disclosed and charged separately on actuals rather than bundled into a single cap. SEBI also cut the ceilings — the top BER for an open-ended equity scheme (AUM under ₹500 crore) dropped from 2.25% to 2.10%, with most slabs trimmed by 10–15 basis points. Brokerage caps were also lowered. Net effect: more transparency and slightly lower costs for investors.

How SEBI caps the fee — economies of scale

The fee a fund can charge isn't arbitrary. SEBI ties it to the fund's size (AUM): the bigger the fund, the lower the maximum it can charge. The idea is that as a scheme grows, the benefits of scale should reach investors, not the AMC. The slabs below are the headline ceilings for open-ended equity schemes (regular plans) under the framework effective April 2026.

Equity scheme AUM slabMax Base Expense Ratio
First ₹500 crore2.10%
Next ₹250 crore1.90%
Next ₹1,250 crore1.65%
Next ₹3,000 crore1.50%
Next ₹5,000 crore1.40%
Above ₹50,000 crore~1.05%

Indicative ceilings; the exact slab values step down as AUM grows. Direct plans are always cheaper than regular plans (see below). Index funds and ETFs sit far below these caps.

Direct vs Regular: the simplest 0.5–1% you'll ever save

Every scheme comes in two flavours. A Regular plan pays a trail commission to the distributor or agent who sold it. A Direct plan cuts out that commission entirely. The rule is literally: Direct plan TER = Regular plan TER − distribution commission.

In practice, that commission is typically 0.5% to 1.0% a year for equity funds. Same fund, same manager, same portfolio — the direct plan simply keeps that slice in your pocket. If you're choosing your own funds and don't need an advisor's hand-holding, the direct plan is almost always the better deal. And if you do want advice, paying a fee-only planner a flat fee can still work out cheaper than a lifetime of trail commissions on a large corpus.

Why it matters so much: compounding works on costs too

A fee feels small in year one. The problem is that the money lost to fees would otherwise have compounded for the rest of your investing life. The drag isn't linear — it widens every year. Move the sliders below to see the gap for your own numbers.

Interactive · Fee Drag Calculator
What does the expense ratio actually cost you?
Low-cost fund High-cost fund Lost to fees
Low-cost corpus
High-cost corpus
Lost to the fee gap

Assumes monthly SIP, monthly compounding, net return = gross return minus expense ratio. Illustrative only — real returns vary and are never guaranteed.

The takeaway from the maths: with the default settings, a 1.3% annual fee gap on a ₹10,000 SIP over 20 years costs around ₹13 lakh at a 12% return — money that simply vanished into costs instead of compounding for you. And it scales up sharply with larger SIPs, longer horizons, or wider fee gaps: each extra slice of expense ratio quietly eats several percent of your final corpus over two decades.

The uncomfortable part: you usually pay more to get less

You might assume a pricier active fund earns its fee through superior stock-picking. The long-run evidence in India says otherwise. The S&P Dow Jones SPIVA India Year-End 2025 scorecard (data to 31 December 2025) measured how active funds fared against their benchmarks:

76%
of large-cap funds underperformed their benchmark over 10 years
84%
of large-cap funds underperformed over the 5-year horizon
83%
of ELSS funds underperformed over 10 years

Mid- and small-cap funds had an unusually good short-term stretch, but even there roughly 79% trailed their benchmark over 10 years. The pattern holds across virtually every category and every long horizon SPIVA has ever published. The logic is brutal and simple: a low-cost index fund charging ~0.1–0.2% starts each year with a built-in head start over an active fund charging 1.5–2%. To merely match the index after fees, the active manager must beat it by their fee, every year. Most don't.

A note on survivorship

The data above already understates the problem. Funds that perform badly are often quietly merged into better-performing sibling schemes, and their poor track record disappears with them. The funds you see on comparison sites today are partly the survivors.

So is a higher expense ratio ever worth it?

Occasionally — but the bar is high. A higher fee can be justified only if a fund consistently delivers benchmark-beating returns after costs across multiple market cycles, not just one hot year. That's rare and hard to identify in advance. For most categories — especially large-cap, where markets are efficient — a low-cost index fund is the more dependable default. Where active management has a better fighting chance (some mid/small-cap and thematic niches), the fee should still be weighed against a passive alternative in the same category, never judged in isolation.

How to screen on cost

A practical checklist

  • Always compare TER within the same category — a small-cap fund's fee against other small-cap funds, never against a large-cap.
  • Prefer the Direct plan unless you genuinely rely on an advisor — it's the easiest 0.5–1%/year you'll ever save.
  • For core large-cap exposure, benchmark every active fund against a low-cost index fund. If it can't clearly beat the index after fees over 5–10 years, the index wins.
  • Check the TER trend, not just today's number — fees should fall as the fund's AUM grows.
  • Never pick on cost alone. A cheap fund that strays from its mandate, or hugs the index while charging active fees, is still a poor choice.
  • Read the fund's actual factsheet for the current expense ratio — it changes over time.
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This article is for educational purposes only and is not investment, tax, or legal advice. Mutual fund investments are subject to market risks; read all scheme-related documents carefully. Past performance is not indicative of future results. Figures from the calculator are illustrative and assume a constant return, which real markets do not provide. Data sources: SEBI expense-ratio framework effective April 2026; S&P Dow Jones Indices SPIVA India Year-End 2025 scorecard. Verify current expense ratios and rules with the fund's factsheet and SEBI/AMFI before investing.