Mutual Fund Calculator

Calculate mutual fund growth and equivalent annual yield after accounting for expenses.

Special Instructions

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Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None
Invest amt:Invest amount:Dollar amount of investment:Dollar amount of investment:

Dollar amount of investment:

Enter the total dollar amount of the funds you are considering investing in the mutual fund. Enter only numeric digits 0-9 and a decimal point if applicable (no dollar signs or commas).

# of years:Number of years:Number of years:Number of years to leave invested:

Number of years:

Enter the number of years you plan to leave the funds invested in the mutual fund. Enter whole numbers only (no partial years).

ROR:Rate of return:Anticipated rate of return:Anticipated rate of return:

Anticipated rate of return:

Enter the percentage return on investment you expect to earn on the mutual fund (without the percent sign). The percentage you can expect to earn should be based on conservative expectations. As we have seen post Y2K, history is not always a reliable predictor of the future. Sure, over the past 20-30 years, money market funds, bond funds, and stock funds have averaged around 5%, 9%, and 11% respectively, but that is certainly no guarantee of what the future might hold.

Sales chg:Sales charge:Sales charge on purchases:Sales charge percentage on purchases:

Sales charge on purchases:

If the fund you are investing in has a sales charge (front-end load), enter the percentage here (without the percent sign). This information can be found in the prospectus of the fund.

Deferred:Deferred chgs:Deferred sales charges:Deferred sales charge percentage:

Deferred sales charges:

If the fund you are investing in has a deferred sales charge (back-end load), enter the percentage here (without the percent sign). This information can be found in the prospectus of the fund.

Annual exp:Annual expense:Total annual operating expenses:Total annual operating expenses percentage:

Total annual operating expenses:

Enter the total annual operating expense percentage (without the percent sign). Be sure to include any other expense percentages (12b-1 fees, etc.) that might apply. This information can be found in the prospectus of the fund.

Change operating expenses:

Change operating expenses:

If the fund you are investing in is scheduled to convert from one class to another within the entered holding period, enter the post-conversion annual operating percentage and the conversion year in the fields below. If the fund is not scheduled to convert, leave both fields blank.

Mutual Fund Growth and Yield
End value:End value:Value at the end of period:Value at the end of holding period:

Value at the end of holding period:

After calculating all gains and expenses, this is how much your mutual fund would be worth at the end of the holding period if your rate of return expectations prove to be true.

BT yield:BT net earnings:Before tax net earnings:Before tax net earnings:

Before tax net earnings:

This is the before-tax effective annual yield after accounting for all sales charges and operating expenses. If the field contains only # signs, it means the mutual fund calculator could not find a percentage match within 10,000 tries.

BT AE yld:BT AE yield:Before-tax, after-expense yield:Before-tax, after-expense equiv. annual yield:

Before-tax, after-expense equivalent annual yield:

This is the before-tax net gain on the investment (value at end of holding period minus initial investment).

Mutual Fund Cost
Chgs, fees:Charges & fees:Total sales charges and fees:Total sales charges and fees:

Total sales charges and fees:

This is the total of all sales charges, deferred sales charges, and annual operating expenses incurred from the beginning to the end of the entered holding period.

Lost earn:Lost earnings:Foregone earnings:Foregone earnings:

Foregone earnings:

This is the earnings you might lose out on due to having to pay the fees associated to investing in the mutual fund versus being able to invest the cost of the expenses. The mutual fund calculator accumulates these lost earnings as fees are scheduled to be paid throughout the holding period, and are based on the entered expected rate of return of the mutual fund.

Total cost:Total cost:Total cost of fund at end:Total cost of fund at end of holding period:

Total cost of fund at end of holding period:

This is the combined total of the sales charges, operating expenses, and foregone earnings for the holding period.

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Help and Tools


What mutual funds are, how they work, and when and how to buy them.

What Are Mutual Funds?

The basic definition of mutual funds: A big pool of investment money created by a large number of small investors who combine their funds to gain the advantages that are normally reserved for big investors.

This pool of investment money is managed by a professional who gets paid based on the amount of money they manage (some also get paid based on the fund's performance).

And finally, each fund is geared toward a specialized kind of security (index, growth, income, sector, etc.). This means you can choose the type of fund based on your own investment goals and risk tolerance -- with the assurance that the fund will maintain its focus on securities that fall within that predefined type.

Main Advantages of Investing in Mutual Funds

A wealthy investor can afford to purchase a diverse portfolio of securities (stocks, bonds, short-term money market instruments, etc.) -- thereby reducing the risk of losing money if a segment of the economy moves in the wrong direction.

With mutual funds, small investors can afford to do the same thing by taking a small amount of money (as little as $500 or less) and investing in a mutual fund that in turn invests the large pool of money into a diverse selection of securities within the framework of their advertised type.

Another of the many advantages of investing in mutual funds is that you can sell or add to your shares at any time. Plus, you can also switch from one type of fund within a fund family (different types of funds managed by the same company) to another type of fund at no cost -- and with just a phone call.

Disadvantages of Investing in Mutual Funds

While mutual funds offer many advantages, it's also important to realize that mutual funds are not federally insured -- even if you purchase them through a bank.

Also, be aware that management fees are charged by all mutual funds regardless of whether or not your mutual fund investment is gaining money or losing money.

For me, the biggest drawback to purchasing mutual funds (namely stock, or equity funds) is that I cannot control which funds make up the fund's portfolio. I don't like the thought of being a part owner of companies that I feel are detrimental to the health and well-being of their client base (credit card companies, tobacco companies, gambling companies, etc.). After all, where the money goes, so goes the power to influence (lobby). Like it or not, believe it or not, ...

Your vote with your money counts more than your vote on a ballot.

How Do Mutual Funds Work?

When you invest in a mutual fund, you transfer money to the fund in an amount greater than the minimum required (varies from one fund to another). If the fund has a sales charge (front-end load), the fund deducts the charge from your initial payment and then issues the number of shares equal to the remaining balance divided by the NAV per share (Net Asset Value per share).

The Net Asset Value (NAV) is the fund's assets minus its liabilities. The NAV per share is calculated by dividing Net Asset Value by the number of shares outstanding.

Net Asset Value Formula

NAV = Assets - Liabilites

NAV Per Share = NAV ÷ Outstanding Shares

So, as a simple example, suppose a fund's assets were $150,000, its liabilities were $50,000, and the fund had 10,000 outstanding shares. In that case, the NAV would be $100,000 ($150,000 - $50,000) and the NAV per share would be $10.00 ($100,000 ÷ 10,000).

You can use the following calculator to calculate the NAV of the fund you are researching.

Mutual Fund NAV Calculator
Enter numbers without dollar signs and commas.
Shares outstanding:
Net Asset Value:
NAV per share:

Continuing with the earlier example, if you transferred $1,000 to the fund that had a 3% sales charge, you would be issued 97 shares of the fund ($1,000 - $30 sales charge = $970, ÷ $10 NAV per share = 97 shares).

From there, you can see that if the NAV rises (assets increase by a greater margin than any increase in liabilities), so does the NAV per share. So if the fund's NAV per share was to increase to say $12, this means you could sell your 97 shares back to the fund for $1,164 (97 x $12 NAV per share) -- leaving you with a gain of $194.00 ($1,164 - $970) -- less any deferred sales charges (back-end load) and annual operating costs.

Since it costs money to run a fund, all mutual funds charge an annual operating expense fee equal to a percentage (usually 1%-3%) of the value of your shares.

Some funds may also charge for sales and marketing (referred to as "12b-1" fees), management, and "other" expenses. The amount of these charges can be found in the prospectus that mutual fund companies are required to provide.

Of course, all of these fees will serve to lower your rate of return, so it's important to shop and compare the fees charged.

When and How to Buy Mutual Funds

Before investing in mutual funds, or any other type of risk-bearing investment, you should have 3-6 months of income saved up in an emergency fund and have no outstanding high-interest debt.

If you don't have a fully-funded emergency fund, I suggest you allocate all investment funds to creating that all important financial safety net.

Or if you do have a fully-funded emergency fund, but you have unpaid high-interest debt, I suggest you invest in your debt before you consider purchasing risk-bearing mutual funds that can't match the safe, tax-free, high rate of returns you can achieve with accelerated debt payoff.

If you do have a fully-funded emergency fund and you have managed to pay off all of your high-interest debt, and you are ready to start investing in mutual funds, you have one of two primary ways of purchasing shares:

  1. You can buy mutual fund shares directly from a fund. These are typically referred to as "no-load" funds -- meaning there is no sales charge for purchasing the shares since they don't use a commissioned sales force to sell their shares. In this case, you will need to do your own research in choosing which fund to invest in.
  2. You can buy mutual fund shares through brokers, banks, financial planners, and insurance companies. These are typically referred to as "load" funds -- meaning there is a sales charge since they need to compensate those that are selling shares on their behalf. In this case, you can get recommendations from the seller as to which funds to buy. Just be aware that they may recommend funds based on how much commission they make. Also, be aware that you will need to earn a higher rate of return to offset the sales charges.

Best Place to Begin to Learn About Mutual Funds

You should now have a rough understanding of what mutual funds are, how they work, and when and how to buy them. For more in-depth study I suggest you begin by visiting the Securities and Exchange Commission's (SEC) section on Mutual Funds (opens in a new window).

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.