Write your own IOU and ask the borrower to sign it. The IOU is valid. It is enough for the borrower to sign the IOU, but it must still be a true, legal and effective loan relationship. If the IOU written by the creditor is based on the fact of borrowing, and both parties register voluntarily, and the IOU content conforms to the legal provisions, the IOU has legal effect.

Legal analysis

When you need to start a business or buy a house, sometimes your personal funds may not be enough. At this time, you need to borrow some money from a capable friend or relative, but just a verbal guarantee can't make the lender feel at ease to lend the money. At this time, you need a legally binding certificate, which is often called an iou. As long as the loan is signed by both parties. However, it should be noted that there must be a legal and effective loan relationship and it must be true. Otherwise, the IOU is still invalid. A contract concluded by fraud or coercion is invalid. A legally established contract shall take effect upon its establishment. Where laws and administrative regulations stipulate that examination and approval, registration and other procedures shall be handled, such provisions shall prevail. In any of the following circumstances, the contract is invalid: one party concluded the contract by fraud or coercion, which harmed the interests of the state; Malicious collusion, harming the interests of the state, the collective or the third party; Cover up illegal purposes in a legal form; Harm the public interest; Violation of mandatory provisions of laws and administrative regulations.

legal ground

People's Republic of China (PRC) Civil Code

Article 148 If a party causes the other party to commit a civil juristic act against its true meaning by fraudulent means, the aggrieved party has the right to request the people's court or an arbitration institution to cancel it.

Article 149 If a third party commits a civil juristic act against its true meaning due to fraud, and the other party knows or should know about the fraud, the defrauded party has the right to request the people's court or an arbitration institution to cancel it.

Article 157 After a civil juristic act is invalid, revoked or deemed invalid, the property acquired by the actor as a result of the act shall be returned; If it is impossible or unnecessary to return it, it shall be compensated at a discount. The party at fault shall compensate the other party for the losses thus suffered; If all parties are at fault, they shall bear their respective responsibilities. Where there are other provisions in the law, those provisions shall prevail.