General investing

Investment Fee Calculator

Apply the annual fee rate to your portfolio value to find how much you pay in investment fees each year.

  • Free
  • No sign-up
  • Updated for 2026

Portfolio & fee

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Enter the portfolio value and fee rate to see the annual fee.

Worked example

With these example inputs:

  • Portfolio value$100,000
  • Annual fee rate0.5%

Annual fee: $500

  • Portfolio value$100,000
  • The remaining share99.5%
  • Amount taken off$99,500
  • If the first figure were 10% higher$550

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What an investment fee is

An investment fee is what you pay to hold a portfolio. It is a percent of the value each year. You enter the portfolio value. You also enter the annual fee rate. The tool applies the rate. The result sits in your currency. One multiplication gives the answer.

An example in figures

Here is what the preset values give:

  • Portfolio value: $100,000
  • Annual fee rate: 0.50%
Annual fee = $500

Why investment fees matter

Fees come straight out of your returns. A small rate adds up over years. Knowing the cost helps you compare funds. It also shows what you give up. The annual fee is the figure to watch. Every fund charges some fee. It quietly trims your gains.

How to use this calculator

Enter two values. Put in your portfolio value in your currency. Then enter the annual fee rate as a percent. The tool multiplies them at once. You read the annual fee at the top. Change either figure and it updates.

How it is calculated

The math is one step. Fee = portfolio value × annual fee rate. You take the value and apply the rate. The answer is your yearly fee. It is what the fund charges. The result sits in your currency. Price times rate is the whole idea.

A worked example

Say your portfolio value is one hundred thousand. The annual fee rate is half a percent. Apply half a percent to one hundred thousand. The annual fee is five hundred. That is what you pay each year. Half a percent of the value.

Reading the result

The total is your annual fee. It repeats every year you hold. A bigger portfolio pays more. Over time the total really mounts. Compare it to a lower-cost fund. The same fee returns each year.

How fees erode returns

A fee is a drag on growth. It is charged whether you gain or lose. Over decades it compounds against you. A half percent can cost a lot. Even small fee gaps matter over time. Fees apply in good years and bad.

Common mistakes to avoid

One slip is reading the rate as a flat amount. Another is ignoring small fee differences. People also forget hidden costs. Each error hides the true cost. Read the fund's fee sheet closely. Hidden costs can lift the total.

The limits of this tool

This calculator shows one year's fee. It does not compound over time. It ignores trading and exit costs. It also assumes a flat rate. Use it as a quick gauge. Real costs compound year on year.

Using the fee to plan

Compare funds on fee rate first. A lower rate keeps more of your gains. Test a few rates against your value. Small savings compound over years. Let the fee guide your choice. A lower rate compounds in your favor.

Reading the result

Recheck the fee as your value grows. A bigger balance pays a bigger fee. Compare a few funds to plan. A clear figure keeps your costs low. Check it whenever your value moves.

Frequently asked questions

How is an investment fee calculated?

Multiply the portfolio value by the annual fee rate, often called the expense ratio. A 0.5% fee on $100,000 is $500 a year.

Why do small fees matter?

Fees are charged every year and compound against your returns. Even a fraction of a percent can cost tens of thousands over decades, so the rate is worth checking.