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Calculation formula of fund subscription fee
This algorithm is called extrapolation.

Let's not talk about this, this 10000 yuan. Look at this example:

Buying a fund of 10000 requires 10000 yuan, and the handling fee of 1.5% is10000 *1.5% =150 yuan.

The total amount is 10 150 yuan. That is, purchase amount = total payment amount /( 1+ rate)

The total amount of 10000 yuan, including the handling fee, will be pushed back. What amount plus 1.5% equals 10000 yuan?

= 10000/( 1+ 1.5%)

=9852.22 yuan

Handling fee = 10000-9852.22

= 147.78 yuan

That is, 9852.22 *1.5% =147.78 yuan.

Appendix: The difference between external buckle method and internal buckle method:

The calculation formula of external deduction method is as follows:

Net subscription amount = subscription amount ÷( 1+ subscription rate)

Subscription fee = subscription amount-net subscription amount

Subscription share = subscription amount ÷ net share value of the day.

The calculation formula of internal buckle method is as follows:

Subscription fee = subscription amount × subscription rate

Net subscription amount = subscription amount-subscription fee

Subscription share = net subscription amount ÷ net value of fund share on that day.