A service provider in Shenzhen mined, resulting in hundreds of Mercado stores blocked in bulk, the seller not only the payment was rolled away, but also inexplicably backed by the platform debt. This incident is a wake-up call to all sellers: in Mercado, compliance is not a question of choice, but a question of survival.

At the beginning of 2026, a service provider in Shenzhen that provides Mexican local store registration, operation and remittance settlement suddenly burst into flames. The company first to "cope with the platform tax review" as the reason for the seller to pay 6% business payment, and then take back the seller's sub-account privileges, unauthorized modification of the main account password, and finally directly rolled away all the store back, and even the use of the seller's store qualifications in the platform of illegal loans!The

What's worse is the sellers implicated - the Mercado stores operated through this service provider were blocked in bulk, mostly for the following reasonsAbnormalities in corporate information and tax violationsThe seller's escrowed payment and security deposit cannot be withdrawn.. According to sellers' spontaneous statistics, hundreds of sellers have been affected by this matter, and the amount involved cannot be verified for the time beingThe

This incident has exposed a cruel reality: in Mercado, one violation can make years of hard work go down the drain. Today, we will combine real cases to sort out theThe 13 Deadliest Types of ViolationsThe "minefield" is the one that helps you avoid these "minefields".

I. Account security violations

1. Inconsistent information on legal persons

In the case of the Shenzhen service provider mine, the primary reason for the store being blocked was the "legal person information abnormality".. Mektor is extremely strict in auditing the authenticity of the seller's identity information. If the actual controller of the store does not match the registered legal person, or if the legal person is not updated with the platform information in a timely manner after changing the legal person, it will be easily determined as a high-risk account by the system.

2. Related account violations

Mercado specifies that a single merchant can open a maximum of five stores, and the ultimate controller of all stores must be the same entity. Some sellers try to bypass the restrictions by replacing the legal representative, but this move in 2026 is no longer feasible - platform tax, bank data has been realized interoperability verification, even if the replacement of the legal person, the platform can still be traced through the qualification and operational traces of the verification of the discovery of the history of associated storesThe

3. Loss of control over account rights management

The lessons from the Shenzhen service provider mine also remind us:The core account must be under your control.. Those sellers who give all their store sub-account privileges and master account passwords to their service providers end up losing control of their store even. It is recommended that account privileges, passwords and returns be verified regularly and that privileges be frozen immediately upon discovery of anomaliesThe

II. Product quality and compliance violations

4. Sale of non-certified products

In March 2026, the Chilean Electricity and Fuel Regulatory Agency imposed a fine of nearly 490 million pesos (approximately 7,000 UTM) on Mercado for the sale of electric water heaters, polishers, drills, gas regulators, patio heaters, and other products on its platformsNo corresponding security certificatesThe

The Regulatory Authority clearly states that "the sale of non-certified products poses a real risk to consumers, and when a product is not certified, there is no guarantee that it has undergone the necessary technical tests to ensure safe use, which could lead to accidents such as electrocution, gas leaks, and fires."

In Brazil, similar regulation is being tightened. Brazil's Federal General Directorate recently succeeded in overturning a ruling that exempted Mercado from joint and several liability for selling uncertified telecom products, explicitly requiring the platform to regulate products such as cell phones and radio transmitting equipment that are not certified by the National Telecommunications Agency (ANATEL)The

5. Lack of mandatory certification of 3C products

Different sites have their own mandatory certification requirements for electrical and electronic products:

• Mexico: NOM certification required
• Brazil: INMETRO certification required
• Chile: SEC certification required (i.e. Sello SEC)

If 3C electronic or cosmetic categories are involved, be sure to prepare the customs clearance certification documents in advance to prevent the goods from being detained due to qualification issues, which will affect the store's performance time.The

III. Tax compliance violations

6. Tax irregularities

Another major reason for the closure of stores in the Shenzhen service provider's thunderstorm was "tax violations".. With new fiscal regulations in core markets such as Mexico, platforms will only become more stringent in their tax compliance requirementsThe

7. RFC tax code not registered

On the Mexican site, sellers who have not registered their RFC tax ID number, the platform willWithholding 20% income tax. This is no small amount and directly affects profit margins.

8. Disorganized financial statements

Mercado has certain requirements for merchants' financial statements, and recommends that merchants establish a sound financial management system and keep clear accounts.The

IV. Violations in the category of store operations

9. Duplicate shelving

Mektor prohibits repeated listing of the same or highly similar products, which is considered "spam" and will be downgraded.

10. Prohibited goods

Each site has a list of prohibited items such as weapons, drugs, endangered plant and animal products, etc. It is important to read the platform's no-sale policy carefully before moving in.

11. Misrepresentation

Exaggerating the function of the product, using absolute terms (such as "the best" and "first"), and stealing other people's pictures are all false propaganda, and will be removed from the shelves or even closed.

12. Intellectual property rights violations

Cosmetics, clothing, shoes and bags, and maternal and child products are high infringement categoriesFor uncertain product images, it is recommended to use the "Infringement Detection" tool to check the copyright of the images. For uncertain product images, it is recommended to use the "Infringement Detection" tool to check the risk of image copyrights, appearance patents and trademarks in one click.The

13. Malicious follow-through

Mercado has some tolerance for followers, but malicious followers (e.g., use of inaccurate information, low prices and malicious competition) will be penalized by the platform.

Enterprise Caiying is deeply committed to cross-border e-commerce tax compliance services, and can provide you with professional support such as Meikido compliance consulting, tax planning, risk screening and so on. If you have any questions about the rules of the platform, or want to do a comprehensive compliance physical examination for your store, welcome to add customer service WeChat: qcygscszk, or call the cell phone: 18676749275. our industry experts will provide you with one-on-one answers to help you grow steadily under the premise of compliance.

V. Logistics and compliance violations

14. Overshipping

Inventory turnover is key in the overseas warehouse model. If shipments far exceed actual sales capacity, resulting in a backlog of inventory, not only do you incur warehousing fees, but it also affects your IPI score.

15. Early warning of IPI scores

Mercado evaluates seller performance through the reputation score system. If the fulfillment rate is not up to standard, the store's reputation score will turn red, which in turn triggers the platform's downgrading and streaming mechanism, resulting in a precipitous drop in order volume!The

16. High cancellation rates

Order cancellations due to insufficient stock or logistic problems under the self shipment mode will directly affect the store reputation.

17. Delayed after-sales response

Mercado has high requirements for after-sales service quality, merchants need to establish an efficient customer service team to deal with customer inquiries and complaints in a timely manner.. Excessive dispute rates can trigger platform risk control and limit store growthThe

VI. Emerging trends in compliance in 2026

1. Enhanced joint and several liability of the platform

Both the Chilean SEC's fine case and the Brazilian court's decision show that regulators are reinforcing platforms' ability to sell products to third-party sellersbear joint responsibility for sth. This means that the platform will push sellers to follow the rules more strictly.

2. Tax data interoperability

Platform tax, bank data has realized interoperability verificationThe risk is growing. The operation of trying to evade regulation through "shell change" is becoming more and more risky.

3. Rising compliance costs

Increased tax compliance regulations in markets such as Mexico have increased operating costs, and some service providers are running away because they can't handle the pressure. It also reminds sellers:Service providers that quote well below market, odds are there's something wrong with themThe

VII. Seller Compliance Self-Inspection Checklist

Give your store a "compliance checkup" against the following questions:

Account Security

• Is the information of the legal person consistent with the registration of the platform?
• Does the number of stores exceed the 5 limit?
• Is the master account password in your hands?

Product Compliance Category

• Are there mandatory certifications (NOM/INMETRO/SEC) for electronic products for the corresponding sites?
• Is there any infringement involved in the product images?
• Is the product description truthful and free of exaggeration?

Taxation

• Is the Mexican site registered with an RFC tax code?
• Are the financial statements clear and complete?

operating class

• Are there duplicate items on the shelf?
• Is the follow-through behavior compliant?
• Are after-sales disputes handled in a timely manner?

Mercado's Q4 2025 earnings report shows platform revenue jumps 45%, surpasses 80 million unique buyers for the first time.. The market dividend is huge, but regulation is also becoming increasingly stringent.

As one veteran seller said, "The fiscal and tax policies in the core market of Merkur Multi 2026 are getting stricter and stricter, and 'compliance' has long since become not a 'multiple choice question' but a 'survival question The problem is 'survival'. Instead of taking the trouble to drill loopholes, it is better to make the existing stores fine and steady in order to really make money."

Enterprise Caiying is deeply committed to cross-border e-commerce tax compliance services, and can provide you with professional support such as Meikido compliance consulting, tax planning, risk screening and so on. If you have any questions about the rules of the platform, or want to do a comprehensive compliance physical examination for your store, welcome to add customer service WeChat: qcygscszk, or call the cell phone: 18676749275. our industry experts will provide you with one-on-one answers to help you grow steadily under the premise of compliance.