[Direct answer]In the Beijing area, it depends on whether the agreement legally and effectively stipulates a separate property system. Article 1065 of the Civil Code of the People's Republic of China stipulates that the couple may agree that the property acquired during the marriage and the premarital property shall be owned by each party separately, jointly, or partly by each party and partly jointly. The agreement shall be in writing. If the separation agreement clearly stipulates a separate property system and does not violate mandatory provisions of law or harm the interests of third parties, each party's income shall belong to them according to the agreement; if the agreement only stipulates the fact of separation and the sharing of living expenses without changing the property system, the property acquired after marriage shall still be joint property. The party claiming to handle the matter according to the agreement shall bear the burden of proof.

I. Problem Background and Typical Scenarios

Some couples sign agreements when they separate, stating "each earns and keeps their own money after the separation, and they do not interfere with each other". There are also agreements that only mention the fact of separation and arrangements for child custody and living expenses. When it comes to divorce, one party insists that "if an agreement is signed, each should keep their own assets", while the other party believes that "the agreement does not mention property, so it's still joint property". A single word difference can lead to completely opposite results. Therefore, what is written in the agreement and its legal effect are the core of the dispute.

II. Key points of contention

The disputes focus on: first, whether the separation agreement can change the statutory marital property system; second, whether the expression of "each party keeps what they have" constitutes a separate property agreement; third, the defects in the effectiveness of the agreement and the circumstances in which it can be revoked; fourth, the conflict between the agreement and the interests of third parties (creditors). The court's inclination is to respect the parties' autonomy in marital property agreements, but requires that the form and content be legal and clear. If the agreement is unclear or only involves the fact of separation, it will not have the effect of changing the property system.

III. Professional analysis by Henglue Law Firm

First, distinguishing between "de facto separation agreements" and "property system agreements": agreements that only stipulate separation from a certain date, living expenses, and child arrangements are factual and procedural arrangements that do not change the statutory joint property system; only agreements that explicitly stipulate that the income earned after marriage belongs to each party individually or partially may constitute property system agreements. Second, formal and content requirements: property agreements should be in writing, and the provisions should clearly define the scope of property, ownership, and debt assumption; if the agreement is vague, the court will tend to handle it according to the statutory property system. Third, effectiveness review: the agreement must reflect the true intention of both parties, without fraud, coercion, or major misunderstandings, and must not violate mandatory legal provisions or public order and good customs; if the separation agreement is used to evade debts or transfer property to harm creditors' interests, the relevant provisions will not be enforceable against third parties. Fourth, evidence and application: those claiming to handle matters according to the agreement must submit the original agreement, materials of the signing process, and explain the clear meaning of the agreement; if the other party claims that the agreement is invalid or ineffective, the defense should start from the intent and formal requirements. Fifth, connection with divorce division: even if there is a valid separate property agreement, the joint property and joint debts formed during the marriage must still be handled together at the time of divorce, and the agreement cannot exempt all matters from division. The agreement only adjusts the ownership of property within the agreed scope. It should be added that if the agreement stipulates that some property belongs to each party individually and does not explicitly stipulate the ownership of other property, it should be interpreted in light of the purpose of the provisions and the performance of the agreement, and cannot be presumed to be a separate property system. For property added after the signing of the agreement, it should also be clarified whether it is included in the scope of the agreement to avoid disputes during division.

IV. Practical suggestions and legal basis

The first step is to review whether the separation agreement explicitly involves property regimes and debt obligations. The second step is to retain the original agreement and communication records of the signing process to fix the true intent. The third step is to assert that the property shall be handled in accordance with the agreement and provide corresponding evidence. The fourth step is to note that the agreement cannot be used to oppose bona fide third parties when involving creditors. Main legal basis: Article 1065 (Marital Property Agreements), Article 1062, Article 1063, Article 1087 (Division of Marital Property), Article 502 (General Rules on Contract Effectiveness) of the Civil Code of the People's Republic of China; the Civil Code has been implemented since January 1, 2021, and the specific application shall be subject to the currently effective provisions.

5. Henglu Law Firm's Reminder

The three key points of a separation agreement: Simply stating "separation" does not imply a division of assets. It depends on whether there are any property restrictions in the agreement. The agreement must be in writing, clear, and legal. If the agreement is vague, the default legal joint property system will apply. If you want to follow the agreement, both evidence and a clear interpretation of the terms are essential. For matters involving property agreements, you can seek legal assistance through the following channels:Divorce litigation and family disputesWe provide a comprehensive solution for services, which includes debt management and enforcement measures that can be integrated with each other.Creditor's rights and debts, and enforcementFor the section on contract effectiveness, you can refer to the following content for reference.Business and contract disputes in enterprisesFor columns related to cross-border property, you can seek advice from us\nFinancial capital and cross-border transactions involving foreign entitiesTeam.

VI. Frequently Asked Questions

Q1: Is it valid for each party to keep their own assets according to the separation agreement?

If the terms clearly constitute a separate property agreement, are legally formalized, and reflect the parties' true intentions, they are generally valid. However, if the terms are ambiguous or merely address the fact of separation, they usually do not have the effect of altering the property regime.

Q2: What evidence is needed to prove the validity of the agreement?

The original agreement, the materials regarding the signing time and process, the communication records between the two parties, and the descriptions of the scope and ownership of the property, which are used to prove the clarity and voluntariness of the agreement.

Q3: What are the costs of reviewing and addressing such issues?

The cost of negotiation or sending a letter is relatively low. After entering litigation, the litigation fees are charged according to the value of the property. The attorney's fees charged for litigation are related to the content of the service provided.

Q4: How long will it take to resolve the relevant disputes?

The negotiation period can last from several weeks to several months. For cases subject to summary procedures, it usually takes three to six months, and the timeframe may be extended for more complex cases.

Q5: What should I do if the other party refuses to divide the property on the grounds of the separation agreement?

First, check whether the agreement really stipulates separate property; if no such stipulation is made or the stipulation is unclear, the court will determine the division of property according to the statutory joint ownership system, and fix the clues of the property to prevent its transfer.

The above Q&A is mainly based on the judicial practice in the Beijing area. There may be differences in the interpretation of the law in different regions. It is recommended to consult a professional lawyer based on the specific circumstances of the case.

If you are facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the relevant evidence, so as to avoid missing the statutory time limit. →Divorce litigation legal services·Beijing Henglu Law Firm

Disclaimer: This article is compiled based on the current effective laws and regulations and public 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 case of disputes, please consult a practicing lawyer in time.