There is an error in the calculation upstairs. At present, the fund subscription adopts the external deduction method, not the internal deduction method in your formula.

The specific calculation and publicity of income are as follows:

Fund investment income = subscription fund share × net fund share value on redemption date ×( 1- redemption rate)-subscription amount = [subscription amount /( 1+ subscription rate)/net fund share value on subscription date] × net fund share value on redemption date ×( 1- redemption rate)-subscription amount.

For example, Yimin Innovation Fund buys 16000 yuan, and the net value of the fund is 1.207 1 yuan. If the subscription rate is 65,438+0.5%, the fund subscription share is = 65,438+06,000/(65,438+0+65,438+0) by external deduction.

If the net value of the fund reaches 1.28 yuan and the redemption rate is 0.5%, the actual income of the fund =13059.02 *1.28 * (1-0.5%)-16000 = 63/.

Note: At present, many fund companies and banks are promoting sales, and the rate may be lower than 1.5%. The actual subscription rate can be substituted into the formula for calculation.