Milage as COGS
Once of my business does importing. Typically I have the items delivered to my location as part of a turn-key shipping solution with all the fees rolled into one invoice, which I charge to the customer at a flat-markup.
But sometimes one of us has to go to the airport and pick the products up. In this situation I charge the customer an airport pickup fee, milage, and whatever misc. fees the airlines tack on to get the shipment out of their warehouse.
For milage and other expenses that I'm going to be directly billing to the customer, should those be tracked as a COGS or as a regular expense? For instance should I have a "Milage COGS" account or just a single milage account for all my milage?
