[Direct answer]In the Beijing area, the key point is to distinguish between the following two scenarios: 1. **Third-party performance**: The third party is simply a worker, not the debtor. If they fail to perform, the creditor can only hold the debtor accountable for breach of contract. 2. **Debt assumption**: The third party becomes the debtor in the debt relationship, and the creditor can directly claim against them. The determining criterion is whether the third party has expressed the intention to "assume the debt" and entered the debt relationship. If not, they are merely a tool for performance.

I. Problem background and typical scenarios

The mother repays the mortgage for her son, the company pays the suppliers' bills for its shareholders, and the affiliated company compensates for the borrowed money—in legal terms, "others repaying the money on behalf of others" actually involves several different structures: agency performance, agency settlement, debt transfer, and debt assumption. Although the names are similar, the responsibilities are completely different. Whether the creditor can directly sue the third party depends entirely on which structure the case falls under.

II. Key points of contention

First, the contract structure of performance by a third party: Why doesn't the third party bear responsibility? Second, the third party's performance of debt repayment: the transfer of the creditor's rights after repayment by a person with legitimate interests. Third, the two branches of debt assumption: the distinction between transfer and accession. Fourth, the interpretation standard of intention expression: the boundary between "repaying for him" and "I will repay it".

III. Professional analysis by Henglue Lawyers

The first layer involves contracts performed by third parties (Article 523 of the Civil Code): When the parties agree that a third party shall perform the debt obligation to the creditor, the contractual parties remain the creditor and the debtor, and the third party does not enter into the contract—if the third party fails to perform or performs in violation of the contract, the debtor shall bear the breach of contract liability to the creditor; the third party is a performance tool, not a subject of liability, and the creditor has no direct right of claim against the third party. The second layer concerns third-party substituted performance (Article 524): If the debtor fails to perform the debt obligation, and the third party has a legitimate interest in performing the obligation, the third party has the right to perform the obligation on behalf of the creditor—typical examples include guarantors, transferees of the guaranty property, and sublessees; after the creditor accepts the performance, the creditor transfers the claim against the debtor to the third party, and the third party recovers the debt from the debtor in the capacity of the transferee of the creditor's claim—this is a combination of "substituted performance and statutory assignment of claims," which is different from simple good-faith repayment: if a third party without a legitimate interest substitutes for the performance, it does not produce the effect of assignment of claims, and can only be handled as unjust enrichment or gratuitous performance. The third layer involves two branches of debt assumption: exemption from liability debt assumption (Article 551): the debt is transferred to the third party, and the original debtor is released from liability, requiring the creditor's consent; concurrent debt assumption, i.e., debt joining (Article 552): the third party joins with the original debtor in joint and several liability, and if the creditor does not refuse, it is established. The common point of the two is that the third party becomes the debtor, and the creditor can directly claim against him—this is the fundamental difference from substituted performance. The judgment sequence of the four-layer structure: 1. Look at the expression of intent—only promising "to handle the matter for him" is substituted performance, and the debt still lies with the original debtor; if the debtor promises "I will repay the money" and informs the creditor, it tends to be debt assumption; 2. See if there is an arrangement for "release of liability"—if the original debtor withdraws, it is a transfer; if the original debtor remains, it is a joining; 3. Finally, see if there is a legitimate interest and assignment of claims arrangement—to distinguish substituted performance from ordinary repayment. Practical scenario comparison: - If the employer directly pays the actual contractor, it is substituted performance if it is only entrusted to pay on behalf of the employer; if it promises "I will pay the project funds" and writes it into the agreement, it may constitute debt assumption; - For a signed repayment commitment letter, the legal consequences of writing "joint and several repayment" and "assisting in collection" are completely different; - For internal compensation within an enterprise group, attention should be paid to completing the written documents for assignment of claims or entrusted payment to avoid the embarrassment of "money paid, but no rights obtained."

IV. Practical suggestions and legal basis

The first step is to identify the structure: determine which category it belongs to based on the meaning of the statement and the contractual status. The second step is to formalize it in writing: use corresponding agreement texts for compensation, joining, and transfer to avoid mixing terminology. The third step is to protect interests: simultaneously handle the transfer of creditor's rights for compensation with legitimate interests. The fourth step is to clarify recourse: pre-specify the recourse path for joiners and compensators in the agreement. Main legal basis: Articles 523, 524, 551, and 552 of the Civil Code of the People's Republic of China, and the Judicial Interpretation of the General Provisions of the Contract Chapter; specific application shall be subject to the currently effective provisions.

5. Henglu Law Firm's Reminder

There are three structures and three sentences: the agent does not bear responsibility for performance, and the third party does not enter the contract; the agent repays the debt in exchange for the creditor's rights, and the legal interest is the ticket; the debtor becomes the debtor, and the transfer requires consent, and the joining depends on silence. For structures involving compensation and debt assumption, you can refer to the following explanations.Creditor's rights and debts, and enforcement casesWe provide a comprehensive solution for services, which includes the ability to combine guarantees, compensation, and debt recovery.Business and contract disputes in enterprisesFor reference, please refer to the section on inter-enterprise payment arrangementsIntellectual property protection and corporate lawFor more information on the plate, you can refer to the section on recovering compensation through enforcementSpecialised legal servicesPlate consultation.

VI. Frequently Asked Questions

Q1: If the third party fails to perform the obligation, can the creditor sue him directly?

Under the structure of acting on behalf of the debtor, the creditor cannot do anything but sue the debtor; under the structure of assuming the debt, the creditor can directly sue the third party, depending on the third party's contractual status.

Q2: Can I recover the money from the debtor after repaying it for someone else?

For compensation with legitimate interests, the claim for compensation can be pursued through the transfer of creditor's rights; for compensation without legitimate interests, the claim should be made separately according to the principles of gratuitous management or unjust enrichment, which follow different legal procedures.

Q3: Is the agreement of "performance by proxy" binding on third parties?

The third party is not bound by the agreement, and whether to perform the obligation is at his own discretion. The debtor shall bear the liability for breach of contract if the third party fails to perform the obligation.

Q4: Does the third party repaying the debt count as joining the debt?

Simply making a payment on behalf of someone does not constitute assuming joint liability; it is only when one explicitly expresses their willingness to assume the debt and informs the creditor of this, and the creditor does not refuse, that it constitutes assuming joint liability for the debt.

Q5: How can the guarantor recover the compensation after making the payment on behalf of the debtor?

Obtain the right to recover from the debtor in accordance with the rule of subrogation, enjoy the creditor's rights against the debtor, and claim the interest of the original creditor and the guarantee benefits.

The above content is based on the judicial practice in the Beijing area. The facts of individual cases and the jurisdiction of the court may affect the conclusions. Welcome to consult Henglu Law Firm for specific cases.

If you are currently facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the relevant evidence materials, to avoid missing the statutory time limit. →Legal services for creditor-debtor disputes·Beijing Henglue Law Firm

Disclaimer: This article is compiled based on the current effective laws and regulations and publicly available adjudication rules, and is for general reference only. It does not constitute a formal legal opinion on specific cases. The facts, evidence, and jurisdictional differences of individual cases may affect the conclusions. In the event of a dispute, please consult a practicing lawyer in a timely manner.