Management expense ratio (MER)

A fund’s yearly management and operating costs as a share of its assets, which directly reduce the returns you receive.

Reviewed by Kyle Garrett, licensed insurance advisorLast reviewed October 2026. How we write

Management expense ratio (MER) represents the annual fees and expenses charged to the fund as a percentage of its average assets. The MER covers the costs of managing the fund, including investment management fees, administration, operational expenses and taxes other than income taxes; trading costs aren’t included and are shown separately as the trading expense ratio (TER). In segregated funds, the MER may also include the cost of guarantees, such as maturity and death benefit guarantees, which offer additional protection to investors.

Key aspects of MER include:

  • Annual fee

    Expressed as a percentage of the fund’s assets.

  • Covers fund costs

    Includes management, administration, and operational fees.

  • Impact on returns

    Directly reduces the fund’s net returns to investors.

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