The expense ratio is the annual cost of running a mutual fund scheme, expressed as a percentage of the assets it manages. It is the main ongoing cost you bear as an investor, and almost nobody notices it, because it never arrives as a bill.
How it is charged
The scheme calculates its expenses daily and deducts them before publishing the Net Asset Value. The NAV you see is already net of costs. There is no separate debit from your bank account, no line item on a statement, and no invoice.
This is the single most important thing to understand about it. Because the deduction is invisible, the cost feels like it is not there. It is: it is embedded in a NAV that is slightly lower than it would otherwise have been, every single day.
What it pays for
- Investment management — the fund manager and research team
- Registrar and transfer agent costs, which maintain your folio
- Custodian and trustee fees
- Audit, legal and regulatory compliance
- Marketing and distribution, including trail commission on Regular plans
SEBI caps the total expense ratio, with the ceiling varying by scheme type and stepping down as the scheme’s assets grow. Equity schemes are permitted a higher ratio than debt schemes, and index funds and ETFs typically run considerably lower than actively managed schemes because there is far less to manage.
Why a small percentage is not a small number
Two features make the expense ratio matter more than its size suggests.
It is charged on your entire holding, not on the amount you contribute. As the holding grows, the rupee cost grows with it.
And it is charged every year. A one-time fee of a given percentage is paid once. An annual fee of the same percentage is paid against a base that is, over a long horizon, compounding.
The practical consequence is that expense ratio differences matter far more for money held over decades than for money held for a year, and more for large holdings than small ones.
Where to find it
- The scheme information document and the monthly factsheet
- The AMC’s website, which is required to publish current expense ratios
- The scheme page on whichever platform you invest through
Check the figure for the specific plan you hold. Direct and Regular plans of the same scheme carry different expense ratios, and quoting one when you hold the other will mislead you.
Using it sensibly
The expense ratio is a cost, not a quality rating. A higher ratio does not indicate a better fund and a lower one does not indicate a worse one. Where it becomes genuinely useful is in comparing schemes that do substantially the same thing — two index funds tracking the same index, for instance, are close to interchangeable, so cost is one of the few things separating them.
For actively managed schemes the comparison is harder, because you are weighing a known, certain cost against an uncertain and unpredictable benefit. What you should not do is ignore the cost simply because it is uncertain what it buys.
Other charges exist alongside it. Exit load is a percentage charged on redemption within a specified period. Stamp duty applies on purchase. Neither is part of the expense ratio.
Frequently asked questions
Is the expense ratio charged even if the fund loses money?
Yes. It is a charge on assets under management, not on profits.
Is it deducted monthly or annually?
The quoted figure is annual, but it is accrued and deducted daily in proportion, which is why it is already reflected in every day’s NAV.
Does a lower expense ratio mean better returns?
All else being equal, a lower cost leaves more in the scheme. But all else is rarely equal between two different actively managed schemes, since their portfolios differ. The comparison is cleanest between funds tracking the same index.
Do index funds always cost less?
Generally yes, because they follow an index rather than paying for active research. Ratios still vary between index funds tracking the same index, which is worth checking.
Mutual fund investments are subject to market risks. Read all scheme-related documents carefully.