A mutual fund's expense ratio is its annual operating cost expressed as a percentage of assets. It affects the net asset value (NAV), so you should understand it before comparing funds. The important questions are which plan you hold, what costs its disclosure includes, and whether the return you are using is already after expenses.
Content reviewed: 2 October 2026. The figures below are hypothetical calculations, not current charges or expected returns of any named fund.
What does expense ratio mean?
Running a fund involves investment management, administration, custody and other permitted expenses. These costs are borne by the scheme. You usually do not receive a separate annual bill for them: published NAV reflects scheme expenses. An expense ratio is annualised; it is not a charge of that percentage every day. AMFI explains how expense ratio affects NAV.
For illustration, if assets stayed at ₹1 lakh for a full year and the annual cost stayed at 1%, the approximate cost would be ₹1,000. Actual deductions depend on changing assets and applicable charges. A scheme can incur expenses even when its investments lose value.
Direct vs regular plans: compare the same scheme
A direct plan and a regular plan of the same scheme share the underlying portfolio but have different costs and NAVs. The regular plan includes distribution costs; the direct plan excludes distributor commissions. Compare the same scheme, the same option and the same date. Comparing a direct index fund with an unrelated regular equity fund does not isolate the effect of fees. SEBI's direct and regular plan explanation.
The right decision also depends on the support you need and the scheme's suitability. A lower expense ratio by itself does not establish that a fund is appropriate for your goal.
Worked example: how a one-point cost difference compounds
Suppose you invest ₹10,000 at the end of every month for 20 years. Assume a constant 10% annual return before expenses and annual costs of either 0.5% or 1.5%. For this simplified illustration, subtract the assumed cost from the gross rate and divide the result by 12 to obtain a monthly rate.
| Assumption | Lower-cost case | Higher-cost case |
|---|---|---|
| Annual cost | 0.5% | 1.5% |
| Modeled annual rate after cost | 9.5% | 8.5% |
| Total contributions | ₹24.00 lakh | ₹24.00 lakh |
| Modeled final value | ₹71.19 lakh | ₹62.70 lakh |
The modeled difference is approximately ₹8.49 lakh. To reproduce it, raise (1 + monthly rate) to the power of 240, subtract 1, divide by the monthly rate, then multiply by ₹10,000. This is the future-value formula for equal end-of-month contributions. This is an illustration of compounding, not a forecast: actual returns and expenses vary, and taxes and exit loads are excluded.
Try your own assumptions in our SIP calculator. If you start with a published return calculated from NAV, do not subtract the expense ratio again: doing so counts those expenses twice.
How to check a fund's current expense disclosures
- Confirm the exact scheme, direct or regular plan, and growth or income-distribution option on your statement.
- Open the AMC's latest expense disclosure and scheme documents. Record the disclosure date rather than treating a rate as permanent.
- Cross-check the AMFI scheme-expense disclosure portal. Its current format separately describes base expense ratio, brokerage and transaction costs. Check the column definitions when comparing numbers.
- Compare equivalent plans and periods. For index funds, also examine tracking difference and how closely the fund follows its benchmark.
Expense ratio, exit load and tax are different
Expense ratio concerns scheme operating costs. An exit load is a separate charge that may apply when you redeem within a specified period. Taxes depend on the investment and the rules applicable to your transaction. Before switching plans, read the scheme's exit-load terms and check the tax consequences; a cost difference alone does not tell you whether a switch is worthwhile.
Common questions
Is there one good expense ratio for every fund?
No. Compare similar schemes and the services, strategy and risks involved. A universal cutoff can hide important differences between passive, active and other products.
Does the cheapest fund give the best return?
No. Costs matter, but performance also depends on investments, market conditions and implementation. Compare risk, objectives and relevant benchmarks alongside costs.
Can I use past returns as a guaranteed SIP rate?
No. Use several illustrative rates and consider downside scenarios. Our step-up SIP calculator can model increasing contributions; it cannot predict market returns.
Educational scope: This guide explains costs and mathematical examples. It does not recommend a fund or a plan switch. See our disclosure and disclaimer.
