1. Calculated according to the housing area: determine the amount of maintenance fund per square meter, and multiply the total housing area by this amount to get the total maintenance fund. For example, if the maintenance fund is 100 yuan per square meter and the housing area is 130 square meters, the total maintenance fund is 13000 yuan. In order to deal with emergency maintenance events, it is usually necessary to retain a part of the maintenance fund, and the retention ratio may vary from region to region.

2. According to the purchase price: according to a certain proportion of the purchase price, usually 2%-3% of the purchase price, pay the maintenance fund to the selling unit. The specific payment ratio can be agreed in the purchase contract. For example, for a flat house with a price of 130, the total price is100000 yuan, and the maintenance fund to be paid is 20000 yuan; If it is paid at the rate of 3%, the maintenance fund to be paid is 30,000 yuan. The amount of maintenance funds in different houses and regions may vary greatly.