If there is no agreed interest, it is generally regarded as no interest. According to the relevant judicial interpretation, there is an agreed repayment period for interest-free loans between citizens, and if the borrower fails to repay on time, or the borrower still fails to repay after being urged by the lender, the lender shall allow the borrower to pay overdue interest. Therefore, if there is no agreement in the loan contract between the two parties or the payment of interest is not clear, it is regarded as not paying interest. However, if the other party fails to repay the loan within the time limit, the lender may collect the overdue interest.

Legal basis:

Article 668 of the Civil Law of People's Republic of China (PRC) stipulates that if there is no agreement or unclear agreement on the payment of interest in the loan contract between natural persons, it shall be regarded as not paying interest. If the loan contract between natural persons stipulates to pay interest, the loan interest rate shall not violate the relevant provisions of the state on limiting the loan interest rate.

Paragraph 2 of Article 680 of the General Principles of Civil Law of People's Republic of China (PRC) stipulates that if there is no agreement on the payment of interest in the loan contract, it is deemed that there is no interest.

Article 676 of the Civil Code of People's Republic of China (PRC) stipulates that if the borrower fails to repay the loan within the agreed time limit, it shall pay overdue interest in accordance with the agreement or relevant state regulations.