In plain English

Every fund has running costs. The expense ratio is that cost expressed as a yearly percentage of your investment. It is taken from the fund’s assets, so you never see a separate bill.

Example

A fund with a 0.50% expense ratio costs $50 a year on $10,000. A fund with a 0.10% ratio costs $10.

Why it matters

Small differences compound over decades. A lower fee leaves more of the return with you. Use the fee impact calculator to see the effect.

Common mistakes

  • Looking only at the headline return and ignoring the fee.
  • Forgetting that fees change, so check the fund’s website for the current figure.