Mutual Funds, Structure, Types and Hidden Costs

Mutual funds have become the main way Indian households move beyond fixed deposits and gold. In August 2026 the industry managed ₹87.08 lakh crore, and investors put ₹32,297 crore into SIPs in that one month. Yet plan types, categories and fees still confuse most investors, and the difference between a direct and a regular plan, compounded over 20 years, runs into lakhs of rupees.

I want you to understand three things after this page: how a fund is structured and why your money is protected, what you are really paying, and what the category label on a fund does and does not promise.

How a mutual fund is structured

An Indian mutual fund is set up as a trust, not a company, and SEBI regulates every part of it. Four roles are kept separate on purpose:

1. SponsorSets up the fund and the asset management company, and must meet SEBI's net worth and track record tests.
2. TrusteesA board that oversees the fund for unitholders and approves major decisions.
3. Asset management companyThe fund manager. Runs the money and charges the expense ratio.
4. Custodian and registrarThe custodian holds the securities; the registrar keeps the record of your units.

The separation is the protection. The AMC decides what to buy, but it never holds the securities; the custodian does. The scheme's assets belong to the unitholders through the trust, not to the AMC. If an AMC ran into trouble, the trustees would move the schemes to another manager. Your units are not a loan to the AMC.

How NAV is calculated

NAV, net asset value, is calculated at the end of every business day:

Invest ₹10,000 at a NAV of ₹52.60 and you receive 190.11 units. Redeem later and you receive your units times that day's NAV. AMFI publishes every scheme's NAV daily, and for equity funds the NAV you get depends on the time your money reaches the fund, not just the time you click.

Direct vs regular plans: the most important decision

Every scheme has two plans, direct and regular. Same portfolio, same manager, different expense ratio.

• Regular plan: bought through a distributor. The AMC pays the distributor a trail commission out of the fund's assets, so the expense ratio is higher.
• Direct plan: bought directly from the AMC or through a direct platform. No commission, so a lower expense ratio, lower by about the commission.

With the defaults, ₹10 lakh grows to about ₹83.6 lakh in the direct plan and ₹72.3 lakh in the regular plan over 20 years. A difference of 0.8 percentage points a year became ₹11.3 lakh, more than the original investment. For a ₹10,000 monthly SIP over the same 20 years the gap is about ₹7.6 lakh. If you choose your own funds, the regular plan's commission buys you nothing you are using. If a distributor genuinely advises you and keeps you invested through bad years, that service has a price; just know what it is.

What you pay: the expense ratio after April 2026

The SEBI (Mutual Funds) Regulations, 2026, in force from 1 April 2026, changed how fees are shown. The total expense ratio is now built from two parts: a base expense ratio, the AMC's own costs such as the management fee, distributor commission, registrar and custody, capped in slabs that fall as a scheme grows; plus statutory and market charges such as GST, STT, stamp duty, brokerage and exchange fees, shown separately. The point of the split is transparency: you can see what the AMC keeps and what goes to the government and the market.

Typical ranges, to calibrate: broad index funds and ETFs often cost a small fraction of 1% a year in their direct plans; active equity funds in direct plans often sit somewhere near 0.5% to 1%; regular plans of the same funds cost more by the commission. Always read the scheme's latest factsheet for the actual number; it changes as assets change.

SEBI's fund categories

Before SEBI's October 2017 circular, AMCs ran many overlapping schemes, and a fund called "bluechip" could hold mid caps. SEBI standardised the categories across equity, debt, hybrid and solution oriented funds, broadly one scheme per category per AMC, with a few exceptions it has since allowed. The equity categories you will meet most:

AMFI publishes the ranked list of companies every six months, so "large cap" means the same thing across every fund. One practical update: ELSS's tax deduction under section 80C is available only if you file under the old tax regime. Under the new regime, which is the default, an ELSS is simply an equity fund with a three year lock in.

That pattern deserves a moment. In August 2026 the Nifty 50 was well below its January high, and investors still put the most money into the riskiest equity categories. Category flows tell you where enthusiasm is, not where value is.

Exit loads and taxes: the cost of leaving

Most equity funds charge an exit load, commonly 1%, if you redeem within a year. The load goes back into the scheme, not to the AMC, to protect the investors who stay. After the load period most equity funds charge nothing.

Tax follows the fund type. Equity oriented funds are taxed like listed shares: 20% on short term gains within 12 months, 12.5% on long term gains above ₹1.25 lakh a year. Debt funds bought on or after 1 April 2023 are taxed at your slab rate whatever the holding period. Switching from a regular to a direct plan of the same scheme counts as a redemption, so check the tax and the exit load before you switch.

Common mistake: owning many funds that own the same stocks

The common mistake is collecting funds. Six large cap and flexi cap funds feel diversified, but their top holdings overlap heavily, so you pay six expense ratios for something close to one large cap portfolio. Compare the top 10 holdings of each fund you own. If most names repeat, you own the same thing several times.

The second mistake is choosing on last year's return. Category leaders change from year to year. Choose on cost, consistency against the right benchmark and how the fund behaved in falls, using the questions from Module 4.4.

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