Isn't there a handling fee for buying a money fund at the bank? What does the bank earn?

The money fund has the following expenses:

Custody fee: generally 0.05% per year.

Management fee: generally about 0.25% per year;

Sales service fee: generally about 0.25% per year;

Although banks do not need subscription fees to sell monetary funds, the sales service fee is the return of funds to banks;

If the monetary fund is managed by a bank, there is an annual custody fee of 0.05%;