[Direct answer]In the Beijing area, the special rules for one-person companies involve a reversal of the burden of proof: if a creditor claims that a shareholder should bear joint and several liability for the company's debts, the shareholder must prove that the company's assets are separate from their personal assets. If the shareholder cannot provide standard annual audit reports and independent accounting evidence, it is directly presumed that there is a blurring of the lines between the company's assets and the shareholder's personal assets, and the shareholder will bear joint and several liability for the company's debts. One-person companies are the most easily "pierced" corporate forms in law, and their compliance requirements are also the most stringent.

I. Problem background and typical scenarios

The typical misbehavior of a sole proprietorship company: The boss collects the company's payments with his personal card; there are frequent "transfers" between the company's account and personal account without any supporting documents; the company has never undergone an annual audit, and the books are just cash flow records; after incurring debts, the boss transfers the company's assets to his spouse's name. A common misconception of sole proprietorship company owners is: "The company is mine, so I can use the money however I want". However, legally, the boundary between the company's assets and personal assets is actually the most stringent in this form of company structure.

II. Key points of contention

First, the application of the reversal of the burden of proof. Creditors only need to provide preliminary evidence, and shareholders need to self-prove the independence of their assets. Second, the standard of self-proof. The rigidity of the three sets of documents: annual audit reports, independent ledgers, and independent accounts. Third, the specific forms of commingling. The three-line commingling of funds, assets, and businesses. Fourth, husband-and-wife companies and de facto single-person companies. The application of rules regarding their registration forms and actual forms.

III. Professional analysis by Henglue Lawyers

一人公司的责任规则，分"规则框架—自证标准—合规路径"三层。规则框架：公司法对一人有限责任公司的特别约束——一个自然人只能设立一个一人公司、公司登记与财务的特别要求、以及最核心的举证倒置：股东不能证明公司财产独立于股东自己的财产的，对公司债务承担连带责任；举证倒置意味着债权人的举证门槛极低（证明公司债务存在+被告是一人公司股东即可），攻防的实质全在股东侧的自证。自证标准：司法实践认可的自证证据按强度排序——第一档，经审计的年度财务报告（每一年都有，审计机构独立出具，账实相符）：这是实务中的硬通货，缺了审计报告的自证普遍失败；第二档，独立的银行账户与规范账册（公司账户与个人账户零混用，往来都有合同与凭证）；第三档，财产的物理区分（办公资产、经营场所的独立）；资金流水是自证的试金石——个人卡收公司货款、账户间无对价互转、公司款项用于个人购房购车消费的，任何一笔出现在流水里，审计报告都救不回来。混同的形态扩展：除资金混同，还有业务混同（个人名义签公司合同）、资产混同（公司资产登记在个人名下）、人员混同（夫妻档无账务分界）；夫妻公司（婚后财产设立的两人公司）与实质一人公司（一人控制多个关联壳公司）的规则参照适用，债权人可主张穿透到实质层面。合规路径：一人公司股东的年度体检清单——每年独立审计不间断、公司账户与个人账户绝对隔离（个人消费走分红或工资程序）、关联往来有合同有利息有归还、资产登记主体与使用主体一致；做不到的，趁公司未负债前做减资、清算或改制为普通有限公司（两人以上的规范架构），负债后再改就晚了。给债权人的提醒：对一人公司的债务，起诉时直接把股东列为共同被告（连带责任主张），举证负担轻、执行标的翻倍；给股东的提醒：一人公司不是省成本的工具，是举证责任倒置的高压形态，要么合规到底，要么换架构。北京地区一人公司数量庞大，执行程序中"股东连带"的判决比例高，审计报告的有无几乎是分水岭。

IV. Practical suggestions and legal basis

The first step is the annual audit and inspection: independent audits are conducted continuously every year, and the books and actuals are consistent and archived. The second step is account segregation: personal cards are not mixed with company accounts, and transactions are conducted through salary and dividend procedures. The third step is creditor strategy: debts of a sole proprietorship company are directly listed as co-defendants of shareholders. The fourth step is structural examination: before assuming debt, options such as reducing capital, liquidating, or transforming the company structure are evaluated. Main legal basis: Article 23 Paragraph 3 (reverse burden of proof for sole proprietorship companies) and Article 59 (special provisions for sole proprietorship companies) of the Company Law of the People's Republic of China (revised in 2023); the Interpretation of the Supreme People's Court on Several Issues Concerning the Application of the Company Law (relevant provisions); specific application shall be subject to the currently effective regulations.

5. Henglu Law Firm's Advice

The survival rule of a sole proprietorship company can be summed up in one sentence: financial independence and annual audits, and absolute separation of personal and company assets. The burden of proof lies with you, and the risk of losing the lawsuit is entirely yours—annual audits are the only reliable safeguard in this business form. When creditors encounter a sole proprietorship company, they will directly involve the shareholder in the litigation without hesitation. For issues related to the compliance of sole proprietorship companies and debt recovery, you can seek assistance through the following channels:Business and contract disputes in enterprisesThe service obtains an overall solution, which involves implementing a recovery path associated with shareholders. You can refer to it for reference.Creditor's rights and debts, and enforcement casesFor reference, you can check the section on corporate structure designIntellectual property protection and corporate lawFor the plates, those involving case assessments can be combined togetherSpecialised legal servicesPlate consultation.

VI. Frequently Asked Questions

Q1: Is it definitely a joint liability if an audit is not conducted?

Basically, the self-certification without an annual audit is generally not recognized in judicial practice.

Q2: Is it considered commingling if an individual card is used to receive payment for goods once?

As soon as evidence of fund commingling emerges, the entire self-evidence collapses, and the risk is extremely high.

Q3: Are marital companies treated as single-member companies?

When the source of the property and the right of control cannot be distinguished, the reference standard shall be applied accordingly, and the creditor has the right to make claims.

Q4: Can shareholders avoid risks by changing the company to a two-person one?

There is room for reform before incurring debts, but sudden changes after incurring debts will be subject to scrutiny and evaluation.

Q5: What should a creditor prepare when suing a one-person company?

The evidence of debt and the defendant's status as a shareholder are sufficient. The other party must prove the existence of commingling on its own.

The above answer is based on the judicial practice in the Beijing area. The judicial interpretations in other provinces and cities may vary. For specific cases, please refer to the local rules and evidence situation.

If you are currently facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the relevant evidence, to avoid missing the statutory time limit.Business and commercial 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. If a dispute arises, please consult a practicing lawyer in a timely manner.