What is the best way to pass through the credit card fee to investors?

The best way to pass fees through to the investor would be to create the trade in the amount of the investment amount + fees and processed as a single credit card transaction.

It is required that the trade amount equals the amount that is to be charged to a customer's credit card. Due to this requirement, the best way to pass fees through to the investor would be to create the trade in the amount of the investment amount + fees and processed as a single credit card transaction.