13000 yuan. The annual interest rate of provident fund loans is 2.6%. According to the law of multiplication, the interest of the 500,000-year provident fund is 500,000 times 2.6%, which should be 13000 yuan. Housing accumulation fund refers to the long-term housing savings paid by state organs and institutions, state-owned enterprises, urban collective enterprises, foreign-invested enterprises, urban private enterprises and other urban enterprises and institutions, private non-enterprise units, social organizations and their employees.