Generally, there are three ways to calculate the handling fee.

1. If the stock type is converted into currency type, it shall be calculated according to the redemption rate of the stock type;

2. Calculate the conversion from currency type to stock type according to the subscription rate of stock type;

3. The conversion between stock types shall be calculated according to the conversion rate stipulated by the fund company. It's just that this conversion rate is cheaper than the redemption and repurchase rates.

If you are not clear, just look at the conversion rules of a fund company's website. There are formulas and cases.