The minimum daily interest rate of WeChat IOUs is 0.0 15%, which is equivalent to an annual interest rate of about 5.5%. According to the introduction of WeChat loan, WeChat loan is an interest-free installment product launched by WeChat. With the white note payment function, users can apply for and obtain a certain credit line on their mobile phones for online and offline consumption. As a convenient installment payment method, WeChat IOU is interest-free for a certain period of time, but it still needs to pay some interest after the interest-free period. The interest rate of WeChat IOUs is determined according to personal credit evaluation, generally between 18%-36%.