Whether the IOUs written by others are valid or not mainly depends on whether the IOUs actually exist. If it exists, the conditions for writing on behalf of the borrower are written according to the actual situation and signed by the borrower, and the loan is valid. Invalid IOUs include: borrowing money to engage in some illegal activities, such as gambling, buying luxury goods and inviting guests to dinner. Lend money to minors and sign IOUs with them.

Legal analysis

The receipt shall specify the loan amount, repayment date, interest and overdue repayment penalty, and require the other party to provide guarantee. At the same time, it is suggested that witnesses be present and sign the iou. IOUs usually apply to the following situations: 1. When buying goods or products, I have to write a debit note because I can't pay or pay all the money of others. 2. The money borrowed from others or units can't be returned, or can't be returned in full, and there are some arrears. 3. Borrow personal or public money and things, and then make up the voucher afterwards. An effective iou should meet the following requirements: the subject of the creditor-debtor relationship should be clearly stated, that is, who is the creditor and who is the debtor. When it is clear that the natural person is the main body, the name on the ID card should be checked. If conditions permit, the ID card number should be copied on the receipt. When the legal person is the main body, the official seal of the unit shall be affixed. The unit of amount should be clear. Express clearly and pay attention to avoid ambiguity. The date of return should be clear, if there is an interest agreement, it should be stated, otherwise it will be regarded as no interest according to law, and if there is an agreement on liquidated damages, it should be stated. If there is a guarantor, the method of guarantee shall be indicated, and the guarantor shall be indicated.

legal ground

People's Republic of China (PRC) Civil Code

Article 143 A civil juristic act that meets the following conditions is valid: (1) The actor has corresponding capacity for civil conduct; (2) the meaning is true; (three) does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.

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.