A mutual fund expense ratio expresses fund costs as an annualised percentage. It is different from the amount you invest and from the return you earn. To read a current disclosure, check both the percentage and the cost heading: AMFI's official expense disclosure page separates base expense ratio, brokerage cost, transaction cost and statutory levies rather than presenting every number as an interchangeable charge.
| Disclosure heading | What to read |
|---|---|
| Base Expense Ratio | The base cost component identified in the disclosure |
| Brokerage cost | Annualised cost measure for executed trades |
| Transaction cost | Trade execution cost component |
| Statutory levies | Tax and statutory cost components |
| Annualised percentage | A yearly expression, not a monthly deduction rate |
Mutual fund expense ratio meaning
The word ratio describes costs relative to an asset base. For a simplified calculation, annual cost ratio = annual expenses ÷ average net assets × 100. If an illustrative fund has average net assets of Rs 100 crore and the defined expenses being measured are Rs 1 crore for a full year, that component is 1%. The numerator must match the cost heading being described.
This example is arithmetic, not a scheme disclosure. A reader cannot assume a base component includes every separate trade-related or statutory component. Nor should a rate labelled annualised be multiplied by 12 as though it were charged afresh at that percentage every month. The unit and the scope of the percentage matter together.
AMFI's official TER disclosure page, reviewed on 30 October 2026, identifies the base expense ratio under Regulation 66(7) of the SEBI Mutual Funds Regulations, 2026. It identifies brokerage under Regulation 66(9) and transaction cost under Regulation 66(10). Its explanations say the displayed percentages are annualised.
Expense ratio calculation on Rs 1 lakh
For scale, assume a constant asset value of Rs 1 lakh and an illustrative annual cost rate of 1% for a full year. The corresponding cost is Rs 1,000. Spread evenly across a hypothetical 365-day year, it is about Rs 2.74 per day. Both the rate and the constant balance are teaching assumptions, not a quote from an actual fund.
The constant-balance assumption is particularly restrictive. If the assets change in value or money enters or leaves during the year, the same percentage will not translate into the same rupee amount every day. An annual rate therefore cannot establish an individual's exact annual cost without considering the relevant asset values and holding period.
AMFI's educational expense explanation says daily NAV is disclosed after expenses are deducted. A published NAV should not have the same expense mechanically subtracted from it a second time. Our NAV meaning and formula guide explains what the per-unit figure represents.
Direct versus regular plan expense ratio
AMFI's current disclosure notes say a direct plan's base expense ratio excludes distribution expenses and commissions. Its direct plan explanation says direct and regular plans belong to the same scheme and share a portfolio and fund manager, while having different expense ratios. Check that the plan name matches the number being read.
A cost comparison by itself does not establish suitability or predict the return a scheme will deliver. A percentage also cannot substitute for understanding the assets held or their risks. The purpose of this explanation is to decode the disclosure, without identifying a fund to buy or choosing a plan for a reader.
How to check the disclosure period
The AMFI page explains that, for months from May to March, the reference period runs from 1 April of the current financial year to the end of the preceding month. Applied to an October 2026 disclosure, that definition gives 1 April to 30 September 2026. The month selected and the reference period are therefore different pieces of information.
Read the financial year, month, fund type, category and mutual fund filters before interpreting a result. Save the disclosure date with the plan name and cost heading. For related calculations, our SIP formula explainer deals with contribution timing, while the gold ETF, digital gold and SGB explainer addresses differences in ownership and redemption.
