Normally Mutual funds can be classified into two types - Load mutual funds and No-Load mutual funds. No Load Fund is a mutual fund in which shares are sold without a commission or sales charge. The reason for this is that the shares are distributed directly by the investment company, instead of going through a secondary party. This is the opposite of a load fund, which charges a commission at the time of the fund's purchase, at the time of its sale, or as a "level-load" for as long as the investor holds the fund.
No load funds have several advantages over load funds. Firstly, funds with loads, on average, consistently under perform no-load funds when the load is taken into consideration in performance calculations. Secondly, loads understate the real commission charged because they reduce the total amount being invested. Finally, when a load fund is held over a long time period, the effect of the load, if paid up front, is not diminished because if the money paid for the load had been invested, as in a no-load fund, it would have been compounding over the whole time period.