Management expense ratio
The annual percentage a fund charges to manage your money, deducted before returns reach you.
The MER covers the fund manager's costs and profit. It is charged as a percentage of assets and deducted from the fund's value, so it never appears as a bill you pay separately.
That invisibility is precisely why it matters. Because the fee is netted out of the unit price, most investors never register how much they are paying, and small percentage differences compound enormously.
Index products commonly charge under 0.3% a year while actively managed funds often charge 1% or more. Over decades that gap can consume a substantial share of the final balance.
1.3% over thirty years
Two investors each contribute the same amount and earn the same gross return. The one paying 1.5% instead of 0.2% can end up with well over a hundred thousand dollars less on a moderate portfolio.
The bit people get wrong
The MER is not the whole cost. Transaction costs, buy-sell spreads, performance fees and platform or administration fees sit outside it, so the true cost of ownership is often higher than the headline figure.
Common questions
Where do I find a fund's MER?
In the product disclosure statement and on the fund's fact sheet, usually alongside a fees and costs summary that also discloses transaction costs.
Is a higher fee ever justified?
Only if it reliably delivers higher after-fee returns, which is difficult to identify in advance. In hard-to-access asset classes a higher fee may be unavoidable.
Do fees apply if the fund loses money?
Yes. The management fee is charged on assets under management regardless of performance, so you pay it in falling markets too.