What Is an ETF Expense Ratio?

The expense ratio bundles the fund's ongoing operating costs, typically including management fees, administration, custody, legal and audit costs. It is deducted from the fund's assets continuously, so the performance figures a fund reports are usually already net of this charge. Importantly, the expense ratio does not include everything you might pay as an investor. Broker commissions, bid-ask spreads when you trade, currency conversion charges and taxes all sit outside it. Some jurisdictions also require funds to publish broader cost figures that capture items such as transaction costs inside the fund, so check which measure a document is quoting. Related terms are defined in the Glossary at /glossary.

Because the expense ratio is charged every year on your invested balance, its effect compounds. A difference that looks trivial in a single year, such as 0.10% versus 0.50%, grows into a meaningful gap over decades of investing, since the fee reduces the base on which future returns are earned. This is why cost comparison is a standard step when choosing between funds tracking the same index: if two funds follow the same benchmark with similar accuracy, the fund with lower ongoing costs will tend to deliver more of the benchmark's return to the investor. Costs are only one factor, though, and should be weighed alongside how well the fund actually tracks its index, its size and how it handles income.

The authoritative source for a fund's expense ratio is the provider's own documentation: the factsheet, prospectus or key information document. Broker platforms and third-party screeners often display the figure, but those displays can lag updates, so confirm it in the fund's current documents before you buy. Expense ratios can change, and providers occasionally apply temporary fee waivers that later expire, so note whether the quoted figure is net of any waiver. Also remember that your total cost of ownership includes what your broker charges to buy, hold and sell the fund, which you should verify in the broker's current fee schedule. The Find my broker workflow at /find-my-broker can help you structure those checks, and the Education hub at /education covers related fund basics.