September 8, 2025 - Updated on March 24, 2026
What is a good expense ratio?
A lower expense ratio is considered beneficial for investors. In nutshell, low expenses mean lower costs and higher amounts are allocated for investments.
Furthermore, as the Assets Under Management (AUM) of a mutual fund increases, the expense ratio decreases. As per SEBI regulations, the expense ratio is inversely proportional to the asset size of a scheme.
Mutual Fund expense ratio formula
There are two main components while calculating the expense ratio in mutual funds:
- Total expense: This expense may include administrative costs, operational cost, marketing cost, promotional costs, compliance costs, maintenance fees, brokerage, distribution cost etc.
- AUM: This is the asset (funds) under management with a particular scheme of the AMC.
Also Read: Active Funds vs Passive Funds
The formula for calculating mutual funds expense ratio (ER) is
The expense ratio in the context of a Mutual Fund is the expense incurred to manage funds (or a Mutual Fund scheme).
This fee is charged by the respective AMC (Asset Management Company).
About the Author

Mr Shashi Kant Bahl
Mr. Shashi Kant Bahl is a mutual fund professional with nearly 20 years of experience in the financial services industry. Since 2005, he has helped over 10,000 investors manage their mutual fund investments and build long-term wealth. His firm currently manages assets of over ₹734 crore (AUM).
Disclaimer: Mutual fund investments are subject to market risks. Read all scheme-related documents carefully.
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