According to the query of Baidu Pro, 800 provident fund can cover the mortgage of 100000 yuan to 200000 yuan. The loan amount of common provident fund is 10 times to 20 times of the balance of provident fund. It stands to reason that the balance of 800 yuan's provident fund can be loaned from 8,000 yuan to16,000 yuan. However, as otherwise stipulated by the state, if the balance of the provident fund is less than 10000 yuan, the loan shall be calculated according to 10000 yuan. That is to say, although your provident fund balance is only 800 yuan, it is actually calculated according to 10000 yuan, and the amount you can borrow is between 100000 yuan and 200000 yuan.