Article 14 of the General Rules for Loans (Draft) stipulates: "The expected annualized interest rate of the extended loan shall be implemented according to the regulations of the People's Bank of China on the date of signing the extended contract. If the loan extension period and the original term reach the new expected annualized interest rate level, interest will be charged according to the new expected annualized interest rate level within the original term and the extension period. " The loan must be repaid at maturity, which is a credit principle that must be observed and a necessary condition for handling credit loans. In other words, the interest rate of the bank changes every year, and the interest rate of the extension depends on the length of the extension. The longer the delay, the higher the interest rate. If an extension is really necessary, it is best not to exceed one year. After one year, the bank will calculate according to the new interest rate.