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How is cost basis calculated for mutual funds?

By Matthew Miller

To calculate average basis: Add up the cost of all the shares you own in the mutual fund. Divide that result by the total number of shares you own. This gives you your average per share.

How do you calculate cost basis for mutual funds with reinvested dividends?

The average cost method is one method allowed by the IRS when you sell mutual fund shares. You figure out the average cost by adding up all the money invested into the fund, including reinvested dividends, and divide by the number of shares you own.

How do you calculate cost basis of investment?

You can calculate your cost basis per share in two ways: Take the original investment amount ($10,000) and divide it by the new number of shares you hold (2,000 shares) to arrive at the new per-share cost basis ($10,000/2,000 = $5).

How do I calculate cost basis for multiple purchases?

To find your total cost basis for your investment with multiple purchases, add the individual cost basis for each share you own. For example, if you own three shares in Company XYZ, one bought at $10, one at $15, and one at $20, your total cost basis is $45.

How is the cost basis of a mutual fund calculated?

Average Cost calculates gains or losses on shares sold based on the average purchase price of all shares you own in a mutual fund account. The gain or loss on shares you sell or exchange is the difference between the proceeds of the sale or exchange and the cost basis of the shares.

How do you calculate cost basis of shares?

To do this, you’ll need to specify one of these cost basis methods at the time of sale: Average Cost – an average of the total purchase cost divided by the total shares held. This is only available for funds. LIFO – or Last In, First Out sells shares in the most recent lot ID first.

How to calculate a gain or loss on a mutual fund?

To figure your gain or loss using an average basis, you must have acquired the shares at various times and prices. To calculate average basis: Add up the cost of all the shares you own in the mutual fund. Divide that result by the total number of shares you own.

When do I Change my cost basis method?

If you change your cost basis method from Average Cost to another method after a sale or exchange of covered shares, the cost basis method will apply only to shares purchased after the date that the change request is processed.