Glossary
Instruments

Expense ratio

The annual fee a fund charges, as a percentage of your money.

It is deducted quietly, every year, whether the fund performs or not. And it compounds against you exactly as returns compound for you.

Over a forty-year horizon, a 1% annual fee typically consumes something in the order of a quarter of your final pot. This is the least glamorous and most reliable improvement available to any investor.

Figure

What a 2% fee costs over thirty years

Tracker, 0.07%Fund, 2%

Both lines earn the same 8%. One pays 0.07% a year, the other pays 2%. The gap is not a rounding error, it is most of the point of the exercise.

Why it matters

It is one of the very few variables you can control with certainty.

The mistake everyone makes

Dismissing a 1% fee as small. Compare it to a 0.07% tracker and then compound the difference for thirty years.

Related terms

See Expense ratio on a real company

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