Rahul started a SIP of ₹10,000 a month in 2019. His friend Anil started the same amount in the same year, in a similar large-cap fund. Seven years later, Rahul’s investment was worth noticeably less than Anil’s — even though both funds held almost the same stocks. The difference was not luck. It was the expense ratio. Rahul’s fund charged 1.8% a year. Anil’s charged 0.4%. That 1.4% gap, compounding year after year, had quietly taken tens of thousands of rupees from Rahul’s returns.
The expense ratio is the most boring number in mutual fund investing, and one of the most important. It is a small percentage taken from your money every year, whether the fund does well or badly. Most investors never notice it, because it never appears as a separate charge on a statement. It is simply deducted from the fund’s value before returns are shown to you. But over a long investing life, it is the difference between a comfortable corpus and a smaller one.
What is the expense ratio in a mutual fund?
The expense ratio is the annual cost of running a mutual fund, expressed as a percentage of the fund’s assets. If a fund has an expense ratio of 1.5% and you have invested ₹1 lakh, the fund takes ₹1,500 a year to pay for itself.
That money pays for the fund manager and the research team, the salaries of the fund house, marketing and distribution commissions, the registrar that keeps your records, the custodian that holds the securities, audit fees, and SEBI’s regulatory charges. It is not a charge for a service you asked for separately — it is the price of the fund existing at all.
The crucial thing to understand is how it is charged. It is not billed to you. It is deducted from the fund’s net asset value, or NAV, every single day, in tiny slices. That is why your returns look clean — the expense ratio has already been taken out before the return is calculated. A fund that earned 14% before costs and charges 1.5% will show you a return of about 12.5%. You never see the deduction, but you always feel it.
SEBI sets a maximum expense ratio, called the total expense ratio or TER, that a fund can charge. For equity funds it is 2.25% on the first ₹500 crore of assets, falling as the fund grows. For debt funds it is 2.00%. Index funds, which need far less management, have lower caps. These are ceilings, not targets — most good funds charge well below them.
Direct vs regular plans: the same fund, different expense ratio
Here is where most Indian investors lose money without knowing it. Every mutual fund comes in two versions: a direct plan and a regular plan. They hold exactly the same stocks, have the same fund manager, and follow the same strategy. The only difference is the expense ratio.
A regular plan is bought through a distributor or agent, who earns a commission every year for as long as you stay invested. That commission is added to the expense ratio. A direct plan is bought straight from the fund house or through a platform that does not take commission, so the expense ratio is lower — typically by 0.5% to 1% a year.
Take a real comparison. A popular large-cap fund’s regular plan might charge 1.75% a year, while its direct plan charges 0.75%. On a ₹10 lakh investment, that is ₹10,000 a year extra in the regular plan. Over 20 years, with returns compounding at 12%, the difference in final value can exceed ₹15 lakh. Same fund, same stocks, same manager — just a different route of buying.
The one exception is if you genuinely need advice and your distributor provides it — portfolio reviews, help during market crashes, tax planning. Good advice is worth paying for. But most distributors sell the fund and disappear. If you are reading articles like this one and managing your own investments, there is rarely a reason to stay in a regular plan. You can switch from regular to direct in the same fund, though the switch counts as a redemption and may attract exit load and capital gains tax, so check the costs before moving.
How much does the expense ratio really cost you?
Small percentages deceive. A 1% difference sounds trivial, and in one year it is. Over twenty years it is not.
Consider a monthly SIP of ₹10,000 for 20 years. At a 12% annual return before costs, the corpus would be about ₹99 lakh if there were no expenses at all. With a low-cost fund charging 0.5%, the corpus is about ₹92 lakh. With a fund charging 1.5%, it is about ₹84 lakh. With a fund charging 2%, it is about ₹79 lakh. The difference between the cheapest and the most expensive fund is ₹13 lakh — more than a full year of your SIP contributions.
The same maths applies to a lump sum. ₹10 lakh invested for 20 years at 12% grows to about ₹96 lakh before costs. At a 0.5% expense ratio, you keep about ₹88 lakh. At 2%, you keep about ₹71 lakh. The fund house has taken ₹17 lakh of your wealth, quietly, in daily slices you never saw.
None of this means a low expense ratio guarantees better returns. A fund charging 1.8% that earns 14% beats a fund charging 0.3% that earns 10%. Cost is one factor, not the only one. But when two funds follow the same strategy and hold similar portfolios, the cheaper one almost always leaves you with more money. And in index funds, where every fund tracking the same index holds nearly identical stocks, the expense ratio is practically the only difference that matters. If you are deciding between SIP and a lump sum, read our comparison of SIP vs lump sum in mutual funds (https://smartfinanceindia.com/sip-vs-lump-sum-mutual-funds-india/).
What is a good expense ratio in India?
The answer depends on the type of fund. For index funds and ETFs, which simply copy an index, the expense ratio should be very low — 0.1% to 0.3% is normal, and anything above 0.5% is expensive for what the fund does.
For actively managed large-cap funds, 0.75% to 1.25% in a direct plan is reasonable. For mid-cap and small-cap funds, where the manager does more research and the fund is harder to run, 1% to 1.75% is common. Flexi-cap funds usually sit in between.
Debt funds generally charge less than equity funds: 0.25% to 1% in direct plans is typical, and liquid funds are often below 0.3%. Hybrid funds fall in the middle.
Two warnings. First, always compare direct plans with direct plans and regular with regular — a regular plan will always look expensive next to a direct plan of a different fund, and that tells you nothing. Second, watch for funds whose expense ratio is creeping up. A fund that grows quickly sometimes raises its charges, or a small fund charges a high ratio because its fixed costs are spread over fewer investors. Both are worth checking once a year.
How to check the expense ratio of your funds
Checking takes less than a minute, but most investors never do it. On the fund house’s website or on your investment platform, open the fund’s page and look for the total expense ratio, usually shown near the NAV and the fund’s size. It is also in the scheme information document and the monthly factsheet that every fund house publishes.
A quicker route is a fund comparison website. Search the fund’s name, and the expense ratio appears alongside the returns, the fund size, and the portfolio. Compare it with the category average — if your fund charges 2% while the category average is 1.2%, ask what you are getting for the extra money.
While you are there, check the fund’s size. A very small fund — under ₹100 crore — often charges a high expense ratio because its fixed costs are spread thin. A very large fund — tens of thousands of crores — usually charges less, but in small-cap funds, huge size can make it hard for the manager to buy and sell without moving prices. Size and cost together tell you more than either alone.
The expense ratio is not the only cost
The expense ratio is the main cost, but not the only one. Some funds charge an exit load if you sell within a year — typically 1% of the redemption value. That is separate from the expense ratio and can sting if you withdraw early.
There is also the securities transaction tax and stamp duty on buying and selling, which are small but real, and the capital gains tax you pay when you redeem. None of these show up in the expense ratio, so a fund can look cheap on cost and still be expensive to exit.
And then there is the cost nobody measures: the return you lose by choosing the wrong fund. A fund that charges 0.5% but follows a strategy that does not suit your goal is a worse choice than a fund charging 1.5% that fits. Cost matters most when everything else is equal. Start with the right category, the right risk level, and a fund with a sensible track record — then pick the cheapest good option within that set. For a broader look at low-cost investing, see our guide to index funds vs active mutual funds (https://smartfinanceindia.com/index-funds-vs-active-mutual-funds-india/).
What to do about the expense ratio in your portfolio
Start with a simple audit. List every fund you own, find its expense ratio and whether it is a direct or regular plan, and write both numbers down. If any fund is a regular plan and you are not receiving real advice from the distributor, consider switching to the direct plan of the same fund.
Next, compare each fund’s expense ratio with the category average. A fund charging far above its peers needs to justify itself with clearly better performance over five years or more — not one good year. If it cannot, a cheaper fund in the same category is probably the better home for your money.
For index funds, the rule is simpler: pick the one with the lowest expense ratio and a low tracking error, which measures how closely the fund follows its index. Since all index funds tracking the Nifty 50 hold the same stocks, cost and tracking error are the only real differences.
Finally, revisit the numbers once a year. Expense ratios change, funds grow, and a fund that was cheap three years ago may not be cheap now. A ten-minute check once a year can be worth lakhs over a long investing life.
The expense ratio will never make a headline. No fund house advertises it, no agent mentions it, and no statement highlights it. But it is the one cost you pay every year, in every market, whether your fund rises or falls. Rahul’s lesson is worth learning cheaply: before you compare returns, compare costs. The cheapest fund is not always the best fund — but a fund that quietly takes an extra 1% of your money every year has to earn that money back before it can beat anyone.