Merchants with a merchant fee for payment plan (i.e. MFPP) agreement can use this endpoint to determine the fee amount for a given order.
This service is only available for USD and CAD currencies.
- The state and country value correspond to the customer's shipping address.
- When the value returned in merchant_fee_for_payment_plan is $0 it means there is no fee applied to the order and this does not need to be displayed at checkout.