I have been allocating all our shipping expenses to the "postage" account, but I realise that is probably incorrect, as for the most part, we pass on shipping charges to our customers.

So I should probably add the shipping charges into the "shipping charges" field in each invoice?

What about changing over all of the shipping charges that I've already entered into "postage" - Can I just go back into Banking and allocate them to a COGS shipping account??

Lastly, if we charge our customers more (or less) than the actual real shipping charges we incur, how do we account for that?

Many thanks