Blog · ETF fundamentals

ETF Expense Ratio: Why Small Differences Compound

Cognitor · 2026-04-04 · EN

The expense ratio is the cleanest fee line item most investors see — annual, expressed as a percentage of assets. Over decades, a few basis points can matter, but TER is not a scoreboard for “best ETF.” It is one input next to tracking quality, tax drag, trading costs, and objective fit.

What TER usually covers

Management, administration, and often custody and audit inside the fund wrapper. It does not include your brokerage commissions, bid–ask spreads, taxes, or personal advisory fees.

What TER does not tell you

It does not measure risk, factor exposure, or tax efficiency in your jurisdiction. Two funds with identical TER can behave differently after tax and transaction costs.

How to use TER in a disciplined process

Compare peers with the same index and structure first. Then layer liquidity and tracking. Finally, place the sleeve inside a scenario read — rates, earnings, flows, geopolitics — which is where Cognitor’s six Panel lenses and SENIOR stack add context. General information only.

General information only — not a recommendation. Each link opens the ticker page in your language.

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FAQ

Is 0.03% always better than 0.20%?

Not if tracking, liquidity, or structural fit is worse for your use case.

Are there hidden fees?

Read the prospectus for securities lending revenue sharing and transaction costs inside the fund.

Does Cognitor rank ETFs by TER?

No. Research highlights scenario-led selection across the monitored universe.

Is this advice?

No.

Where can I learn the full process?

See How it works and the Panel + SENIOR + PRIME article in this series.

Next in series → How Brazilian Investors Reach the U.S.-Listed ETF Layer

What TER usually covers

What TER does not tell you

How to use TER in a disciplined process

ETFs in this article (research pages)

FAQ