What is the journal entry for sale of a fixed asset, including payoff of a mortgage loan and net gain on the transaction? The question is extremely unclear, so I am going to assume that there is a company (Y) that has sold someone (S) a loan (L).Should I use a Journal entry again and get rid of the asset and diminish my Loan to 0 and only then dispose the Fixed asset? Fixed assets represent a significant capital investment, so it's critical the accounting be applied correctly. Journalize entries for sale of assets. This entry has several steps to account for the updates to your portfolio. It removes the property from your balance sheet, clears its accumulated depreciation.