How to calculate the interest of housing special maintenance fund?

Mr. Zhao, a reader from tiedong district, gives you advice: The staff of Anshan Residential Special Maintenance Fund Management Center introduced that the property owner's special maintenance fund account generates interest every year according to the current interest rate listed by the People's Bank of China; Owners can check the principal and interest amount of residential special maintenance funds on the website of Anshan residential special maintenance fund management system. Before the establishment of the owners' congress, the special maintenance funds deposited by the owners shall be managed by the Municipal Real Estate Bureau. After the establishment of the owners' congress, the owners' committee applied to open a secondary account for special maintenance funds. The Municipal Real Estate Bureau informs the special account management bank to transfer the book balance of the special maintenance fund deposited by the property owner within the property management area to the special maintenance fund account opened by the owners' congress, and hand over the relevant accounts to the owners' committee.