I was wondering what you wound up doing in this situation? I am in a similar position & my current solution seems kind of clunky. Currently I have a separate inventory account for each vehicle, add the purchase expense and all reconditioning expenses to this inventory account as they are accrued. Once the vehicle is being sold, I make a fake expense to create an *inventory item* for the vehicle, credit the previous inventory account for the exact amount to "zero" the account, enter the amount as the purchase price for the new inventory item, & use that inventory item on my invoices. All this just so that I can track profit margins on vehicles & only move the expenses into COGS when the vehicles are sold. There has to be a better way. From what I have read online, it seems QuickBooks Desktop has an "assemblies" function that *may* work better for this but I need a solution for QuickBooks Online as that is what we are using.