Direct Cost Entry in Purchase Invoice

Direct Cost Entry in Purchase Invoice

Hi,
I have entered a Purchase Invoice.  I need to add direct cost related to this purchase.  Freight, THC & Customs Duty.  On adding these costs, I will be able to derive the landed cost of each item.  How do I enter these direct costs into the purchase bill?  These costs should reflect in a GL account so that when customs duty is paid to the government authorities, it can be adjusted with the GL account.  Then the GL account becomes NIL.