What Is the Expense Ratio of a Mutual Fund?

The expense ratio (or Total Expense Ratio, TER) is the annual fee a mutual fund charges to manage your money, expressed as a percentage of the fund's assets. It's small-sounding but compounds into a big drag over time.

What it covers

The expense ratio pays for fund management, administration, distribution, and other running costs. A 1.5% expense ratio means 1.5% of your invested value is deducted each year — taken out of the NAV daily, so you never see a separate bill, but it's there.

Why it matters so much

Because it's charged every year and compounds, a seemingly small difference in expense ratio can cost a large chunk of your returns over decades. This is the core argument for low-cost index funds and ETFs, and for direct plans over regular ones.

A note on our data

Expense ratio lives in scheme documents we don't currently ingest, so it isn't a field in the mutual-fund API — which provides identity, NAV history, returns, and stock-level holdings. See the fund-data guide for what's covered.