What Is a Mutual Fund Expense Ratio?
When you invest ₹1 lakh in a mutual fund, the entire economic return generated by the fund's investments does not necessarily reach you.
Running a mutual fund costs money.
There are investment-management expenses, administration and record-keeping costs, custodian and registrar expenses, marketing and distribution costs where applicable, audit-related expenses and other permitted scheme expenses.
These costs are ultimately reflected in the scheme's expense structure.
For investors, the important point is simple:
The expense ratio represents the recurring cost of running and managing a mutual fund scheme, expressed as a percentage of its assets.
And unlike an upfront bill, investors generally do not receive a separate request to pay this amount.
The expenses are accounted for in the scheme's NAV.
That makes the expense ratio easy to overlook—but potentially important over long investment periods.
TER Has Changed in 2026: Investors Need to Know About BER
This is where many older explanations of mutual fund expense ratios are now outdated.
Under the SEBI (Mutual Funds) Regulations, 2026, the regulator revised the expense-ratio framework and introduced a clearer distinction between the Base Expense Ratio (BER) and the broader Total Expense Ratio (TER).
SEBI says expense-ratio limits are now referred to as Base Expense Ratio limits, with statutory levies excluded from those limits.
Under the revised framework:
Total Expense Ratio = Base Expense Ratio + Brokerage + Regulatory Levies + Statutory Levies
Statutory and regulatory charges—including applicable STT/CTT, GST, stamp duty, SEBI fees and exchange fees incurred in executing trades—can be charged on actuals under the regulatory framework.
This distinction is important because an investor looking only at a base expense figure may not necessarily be looking at the complete cost associated with the scheme.
SEBI said the changes were intended to improve transparency and investor protection.
What Does the Expense Ratio Actually Pay For?
The cost of operating a mutual fund can include several components.
Depending on the scheme and applicable rules, these may include investment management and advisory expenses, registrar and transfer-agent costs, custodian expenses, audit and trustee-related costs, investor communications, marketing and selling expenses, permitted distribution costs and other eligible operating expenses.
Trading a portfolio also creates brokerage and transaction costs.
Under the new regulatory framework, investors therefore need to understand the difference between the scheme's base operating expense and its total cost after applicable brokerage and statutory/regulatory levies.
This is a more useful way to think about fund expenses than assuming that one percentage tells the entire story.
How Does an Expense Ratio Reduce Your Return?
Consider a simplified example.
Suppose a mutual fund's underlying portfolio generates a hypothetical 12% annual return before fund expenses.
If the effective annual cost were 1%, an oversimplified way of understanding the impact would be to think of the investor receiving roughly 11% before considering other factors.
If costs were 0.5%, the comparable simplified return would be around 11.5%.
Actual mutual fund NAV calculations are more complex, so investors should not treat this subtraction as the precise accounting method.
But it illustrates an important principle:
Every rupee taken out in recurring costs is a rupee that can no longer remain invested and compound for you.
That difference becomes increasingly significant as the investment horizon gets longer.
The ₹1 Lakh Example: Why 0.5% Can Become Significant
Consider two hypothetical investments of ₹1 lakh.
Assume, purely for illustration, that one compounds at 11% annually after costs and another at 11.5%.
After 20 years, approximately:
₹1 lakh compounding at 11% would grow to about ₹8.06 lakh.
₹1 lakh compounding at 11.5% would grow to about ₹8.81 lakh.
The difference is roughly ₹75,000.
And that comes from only a half-percentage-point difference in the assumed annual net return.
This is not a forecast of any mutual fund's performance. It ignores taxes, cash flows, portfolio changes, tracking differences and other factors.
Its purpose is to demonstrate the mathematics of compounding: small recurring cost differences can become much larger rupee differences over long periods.
For a larger portfolio or a 25- to 30-year investment horizon, the absolute impact can be substantially greater.
Direct Plan vs Regular Plan: Where Expense Ratio Becomes Especially Important
One of the easiest places to see expense ratios affecting investors is the difference between Direct and Regular plans.
AMFI explains that Direct and Regular plans are part of the same mutual fund scheme.
They have the same underlying portfolio and are managed by the same fund manager.
The key difference is distribution.
A Regular Plan is purchased through a mutual fund distributor or intermediary. Distribution-related expenses or commissions form part of the costs associated with that route.
A Direct Plan is purchased directly without routing the investment through a distributor.
As a result, AMFI says:
Direct Plans have lower expense ratios than Regular Plans because distributor-related costs are absent.
That lower expense ratio results in a different NAV and, all else being equal, can translate into a higher return to the investor over time.
But this does not automatically mean Direct is appropriate for every person.
Should Everyone Choose Direct Plans?
Not necessarily.
A knowledgeable investor who can independently select funds, determine asset allocation, assess risk, rebalance a portfolio and avoid emotional investment decisions may value the lower cost of Direct Plans.
Another investor may need advice, portfolio guidance or assistance from an intermediary.
The relevant question therefore isn't simply:
“Which plan is cheaper?”
It is:
“Am I receiving enough useful service from the Regular Plan route to justify the additional cost?”
That is a more rational comparison.
Paying more for genuine, useful advice can be worthwhile.
Paying more without understanding what service you receive is a different matter.
SEBI's New Expense Limits: What Changed in 2026?
SEBI substantially revised the expense-ratio structure as part of its overhaul of India's mutual fund regulations.
For index funds and ETFs, SEBI's revised maximum BER is 0.90%, excluding statutory levies.
Fund-of-funds limits depend on what the FoF invests in.
For example, the revised BER ceiling is 0.90% for FoFs investing in liquid schemes, index funds or ETFs; 2.10% for FoFs investing more than 65% of assets in equity-oriented schemes; and 1.85% for other FoFs.
For other open-ended schemes, the maximum BER works through AUM slabs.
For an equity-oriented scheme, for example, the revised ceiling begins at 2.10% for the first ₹500 crore slab, with lower applicable rates across progressively larger AUM slabs.
For non-equity-oriented schemes, the corresponding first slab is 1.85%.
The rates progressively decline as assets become larger.
This sliding structure reflects an important economic idea: larger funds can potentially spread some operating costs across a bigger asset base.
Importantly, these are regulatory ceilings—not a statement that every fund charges the maximum permitted amount.
Investors should check the actual expense ratio of the specific plan they are considering.
SEBI Also Cut Permitted Brokerage Caps
The 2026 reform went beyond renaming TER limits as BER.
SEBI also rationalised brokerage limits.
For cash-market transactions, the revised brokerage cap is 6 basis points, excluding statutory levies, compared with an earlier 12-basis-point cap that included statutory levies.
For derivative transactions, the revised cap is 2 basis points excluding levies, compared with the previous 5-basis-point cap including statutory levies.
SEBI also removed an additional 5-basis-point expense allowance that had been available to schemes with exit loads as a transitional measure.
These changes matter because the true cost of running an investment portfolio involves more than the headline management fee.
Expense Ratio vs Exit Load: They Are Not the Same Thing
Investors sometimes confuse these two costs.
An expense ratio is an ongoing scheme-level cost.
An exit load, where applicable, is linked to redemption under specified conditions, typically when units are sold within a defined period.
They therefore affect investors differently.
A person holding a fund for years continues to be affected by recurring scheme expenses even after an exit-load period has expired.
When comparing funds, investors should check both—but should not treat them as interchangeable.
Does the Expense Ratio Come Out of Your Bank Account?
No separate annual expense-ratio bill normally arrives in your bank account.
Scheme expenses are reflected in the fund's NAV.
This creates an important psychological problem.
If an investor had to transfer ₹5,000 to an AMC every year as a visible fee, the cost would probably receive significant attention.
When the cost is incorporated into NAV calculations instead, it can feel almost invisible.
But economically, it is still a cost borne through the scheme.
A Lower Expense Ratio Is Better—But It Does Not Automatically Mean a Better Fund
This is perhaps the most important qualification.
Imagine Fund A has an expense ratio lower than Fund B.
That fact alone does not establish that Fund A is the better investment.
Investors also need to consider factors such as:
investment objective and strategy,
risk,
portfolio quality and concentration,
consistency of the investment process,
performance relative to an appropriate benchmark,
tracking error or tracking difference for passive funds,
fund-manager approach for actively managed funds,
liquidity and portfolio construction, and
whether the scheme actually fits the investor's asset allocation.
A cheap fund that does not suit your objective is not automatically a good investment.
Likewise, a higher-cost active fund needs to justify its additional expense through the value of its investment process and outcomes.
Expense Ratios Matter Even More for Passive Funds
Cost comparisons become particularly interesting with index funds and ETFs.
Two funds following the same benchmark are attempting to deliver broadly the same underlying market exposure.
That reduces the scope for differentiating them through stock selection.
As a result, cost, tracking difference, tracking error, liquidity and operational efficiency become especially important.
A fund with the lowest published expense ratio is still not automatically the best passive fund.
For example, an index fund could advertise a very low cost but consistently lag its benchmark by more than a competing fund because of portfolio implementation, cash drag or other factors.
Investors should therefore compare what the fund charges with how closely it actually delivers the benchmark return.
That gives a much more complete picture than expense ratio alone.
Expense Ratios Can Change
Another mistake is assuming the expense ratio seen on the day of investment will remain fixed for the entire investment period.
It may not.
A scheme's applicable expenses can change within regulatory limits.
That means a comparison made several years ago may no longer accurately describe two competing funds today.
Expense ratios should therefore be monitored periodically, particularly when investors hold similar schemes where costs are an important differentiator.
How to Check a Mutual Fund's Expense Ratio
Investors do not need to rely solely on third-party investment apps.
SEBI's disclosure framework requires expense information to be made available, and mutual fund houses publish expense ratios for their schemes.
AMFI also provides industry-level expense-ratio information.
Before investing, check the exact scheme and exact plan.
This distinction matters because:
“ABC Equity Fund – Direct – Growth”
and
“ABC Equity Fund – Regular – Growth”
can own the same portfolio while carrying different expense ratios.
AMFI Mutual Fund Expense Ratio Information
What Investors Should Compare Before Choosing Between Two Funds
A useful comparison should go beyond asking which fund produced the highest return last year.
Start with whether both funds belong to the same category and pursue comparable objectives.
Then examine their expense ratios, Direct-versus-Regular plan structure, risk, portfolio, benchmark-relative performance and—in passive funds—tracking difference and tracking error.
The expense ratio becomes particularly useful as a tie-breaker between genuinely comparable investments.
If two index funds track the same benchmark effectively, for example, persistent cost differences become harder to ignore.
But comparing expense ratios between completely different products—say, a liquid fund and a small-cap equity fund—does not tell an investor which is more appropriate.
They perform different jobs.
The Bigger Lesson: Returns Are Uncertain, Costs Are More Observable
Investors cannot know with certainty which equity fund will deliver the best return over the next decade.
They can, however, observe what a fund currently charges.
That makes cost one of the few investment variables that can be evaluated before future returns are known.
Expense ratio should therefore not be the only criterion for choosing a mutual fund.
But it should not be ignored either.
Over a one-year period, a difference of a few tenths of a percentage point may look trivial.
Across 10, 20 or 30 years of compounding, repeated year after year, it can become meaningful.
The most useful rule is therefore straightforward:
Don't simply search for the cheapest mutual fund. Search for an appropriate, well-run fund—and then make sure you are not paying more than necessary to own it.
