When we're talking about the gain or loss of the sale of an asset we need to be looking at net book value at the time of the sale. I've sold a fixed asset that has appreciated in value, how do I structure the journal entry, as the credits and debits need to equal out on the journal entry?Here we review some generally accepted accounting principles that every business owner should understand. Consider all costs at time of acquisition or construction. Loss on sale of capital assets (if loss). 4,500. Cr. Equipment. 10,000. This video explains how to calculate and account for a sale of an asset when there is a gain or loss. The Asset Management module in SWIFT is used to maintain assets throughout their life cycles.