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net monthly rate = (1 + annualReturn)^(1/12) - 1 - (annualFee / 12)

annualReturn

assumed gross return before any fee

annualFee

the expense ratio, deducted continuously through the year

growth forgone

the difference between the two balances, minus the fees actually paid

مثال محلول

A $50,000 balance growing at 7% for 25 years reaches about $271,000 with no fee. At a 0.75% expense ratio it reaches about $225,000. Roughly $22,000 of the $46,000 gap is fees paid; the rest is growth those fees prevented.

أسئلة شائعة

What is an expense ratio?

The annual percentage a fund charges to run itself, deducted from the fund assets rather than billed to you. A 0.75% expense ratio on a $10,000 holding is about $75 a year, taken continuously and invisibly, which is why the cost is so easy to overlook.

Why is the true cost of a fee larger than the fee itself?

Every dollar taken as a fee is also a dollar that stops compounding. Over long horizons the forgone growth is usually larger than the fees themselves, so comparing only the headline percentages understates the difference between two funds.

Is a lower expense ratio always better?

Not automatically. A fee buys a service, and funds differ in what they hold, how they trade and how closely they track. The point of this calculator is to size the cost accurately so you can weigh it against what you are getting, not to argue that any particular fund is right for you.

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