Definition

Expense Ratio

Expense ratio is the annual management cost charged by a fund, expressed as a percentage of assets.

Understand fee drag and its cumulative impact on long-term compounding.

Last reviewed: 2026-03-03 | Review cycle: 120 days | Next review due: 2026-07-01

How It Works

Even small fee differences can compound into large outcome gaps over long periods.

Expense ratio reduces net return directly, so it should be modeled in realistic forecasts.

Fee analysis should include both stated ratios and transaction-related costs where relevant.

Scenario

Two funds have similar strategy but 0.20% vs 1.00% annual expense ratio.

Outcome

Over decades, the lower-fee option can retain substantially more terminal wealth.

Scenario

Investor compares returns without fee adjustments.

Outcome

Expected future value may be overstated relative to net outcomes.

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Do low fees guarantee better returns?

No, but lower fees reduce structural drag and improve net compounding odds.

Should fee impact be tested in scenarios?

Yes, especially for long-duration goals.