According to the actual maintenance funds. Overhaul fund, also known as the maintenance fund, needs to be calculated according to the actual maintenance fund when the house is delivered to overhaul fund in advance. Overhaul fund refers to the special expenses for repairing, maintaining and replacing the facilities and equipment other than the proprietary part of the owner after the warranty period expires. Because the money belongs to everyone, no one or unit has the right to misappropriate it.