On September 9, 2026, Mercado Libre Mexico will officially adjust the rules for calculating seller reputation (Reputación). The most significant change is that the order volume threshold for the reputation calculation period—based on the most recent 60 days—will increase from 40 orders to 101 orders. In other words, only sellers who have completed 101 or more orders in the past 60 days will have their reputation calculated based on their “past 60 days” performance; sellers with fewer than 101 orders will automatically switch to having their reputation calculated based on their “past 365 days” historical performance.

This change will have the greatest impact on growing sellers. Previously, a seller on the Mexico site could have their reputation calculated based on short-term performance by completing 50 orders within 60 days; once the new rules take effect, those 50 orders will be included in a 365-day cycle. The extended cycle means that a delayed shipment, a buyer complaint, or a voluntary cancellation that occurred this past March could still affect a store’s reputation and traffic weighting as late as next March.

Qicaiying Group specializes in cross-border e-commerce services for the Latin American market and has helped over 200 companies complete their onboarding on Mercado Libre, obtain RFC (Mexico), CPF (Brazil), and CNPJ (Brazil) tax registration, register local companies, and integrate with FULL warehouses. From addressing credit policy requirements to verifying RFC entity consistency, Qicaiying offers a one-stop compliance solution for businesses expanding into Latin America. For inquiries, call 18676749275 or add us on WeChat: Qicaiyingjituan.

I. Key Points of the New Regulations Effective September 9: From 40 orders to 101 orders

According to an announcement from the Meike Duo Global Selling Learning Center, this adjustment primarily involves two aspects: first, raising the threshold for short-term order volume assessments; and second, adjusting the permitted percentage of “affected sales” within a 365-day cycle. For the Mexico marketplace, the 60-day order threshold has been raised from 40 orders to 101 orders, an increase of more than 150%.

It is important to note that this does not mean “sellers with fewer than 101 orders will have their credibility downgraded”; rather, it refers to the time period the platform uses to calculate credibility. The platform automatically determines when to switch between these periods, so sellers do not need to make any manual adjustments. However, sellers must be clear on whether they are on a 60-day or a 365-day cycle under the new rules.

II. What the 60-Day Cycle vs. the 365-Day Cycle Means for Sellers

If a seller is on a 60-day cycle, the reputation calculation is based solely on order fulfillment performance over the past two months; short-term fluctuations have a significant impact, but historical issues do not have a long-term negative effect. If a seller is on a 365-day cycle, all abnormal orders from the past year are included in the calculation, resulting in a heavier historical burden.

For growing sellers currently in the 40- to 100-order range, this is the most critical period. Under the new regulations, they will be required to adhere to a 365-day cycle, and even a single cancellation or delay that occurred in the past may be given greater weight. Therefore, these sellers need to re-examine their order fulfillment records for the past 365 days.

Qicaiying Group has localized compliance teams in Latin American markets such as Mexico and Brazil, offering one-stop services including guidance for setting up on Mercado Libre, one-stop services including Mercado Libre onboarding support, RFC registration and entity consistency verification in Mexico, company registration and CPF/CNPJ processing in Brazil, opening local bank accounts, integration with FULL warehouses, order fulfillment diagnostics, and tax filing. For inquiries, call 18676749275 or add us on WeChat: Qicaiyingjituan.

III. Percentage of Sales Affected and Key Metrics

Under the 365-day cycle, the allowable percentage for “affected sales”—such as seller-initiated order cancellations and shipping/delivery issues—will be enforced according to the new standards, which are generally more stringent. The allowable percentage for buyer complaint rates will remain unchanged.

This means that sellers cannot simply focus on increasing order volume; they must also strictly control cancellation rates, shipping issues, and complaint rates. Common high-risk behaviors include: voluntary cancellations due to out-of-stock items, shipping issues caused by delays in the initial leg of the shipment, delivery delays resulting from customs clearance problems, and buyer complaints stemming from slow customer service responses.

IV. Self-Assessment of the Order Fulfillment Process

Before the new regulations take effect, sellers are advised to conduct a self-assessment of their fulfillment process across four key areas:

On the inventory side: Ensure that the platform's inventory is synchronized in real time with the actual available inventory to avoid proactive cancellations caused by overselling.

Outbound leg: Choose a stable and reliable first-leg logistics provider, allow for sufficient transit buffer time, and avoid switching channels at the last minute before the peak season.

Customs Clearance Side: Mexican customs conducts strict inspections of categories such as electronics, cosmetics, and textiles; ensure that all required documents—including invoices, packing lists, and NOM certifications—are complete.

Last-mile segment: Maintain communication with local delivery providers to promptly handle abnormal shipments and reduce the delivery failure rate.

V. How Inventory Management and Customer Service Can Maintain Reputation

Inventory accuracy is key to reducing voluntary cancellations. We recommend using an ERP system to synchronize inventory across multiple platforms, setting safety stock alerts, and stocking up on best-selling items for peak seasons in advance to ensure they are fully stocked.

The speed of customer service responses directly affects the buyer complaint rate. Mexican consumers have high expectations for after-sales service, so we recommend staffing your team with Spanish-speaking customer service representatives or using a professional outsourcing team to ensure that buyer inquiries are responded to within 24 hours. The faster you address negative reviews and complaints, the less negative impact they will have on your reputation.

Qicaiying Group is a board member of the Shenzhen Cross-Border E-Commerce Association, with a professional team of 400 and a local service network spanning more than 40 countries. Whether you need assistance with setting up a Mercado Libre store, guidance on reputation management, or tax compliance for RFC/CPF/CNPJ, you can contact Qicaiying to receive a customized Latin American market expansion solution. Consultation Hotline: 18676749275. Add us on WeChat: Qicaiyingjituan.

VII. Comparison of Reputation Thresholds for Websites in Different Countries

Meike Duo's latest adjustments to its reputation rules apply to multiple country sites, but the thresholds are not exactly the same. Sellers cannot simply apply the Mexican standards to all sites:

Sellers operating on multiple platforms should review their backend data for each platform individually and develop separate fulfillment and inventory strategies for each.

VIII. Operational Strategies in Light of Changes to Reputation Rules

In light of the new reputation calculation rules, sellers should shift their focus from a “volume-driven mindset” to a “fulfillment-driven mindset”:

Prioritize improving order fulfillment reliability. Rather than blindly chasing order volume, it’s better to first ensure that every order is shipped on time, delivered smoothly, and completed without any complaints.

Optimize inventory distribution. Stock up on best-selling items in advance to ensure the FULL warehouse is fully stocked, thereby reducing voluntary cancellations due to out-of-stock situations; set safety stock alerts for long-tail SKUs.

Be more cautious when placing ads. During a period when your reputation is unstable, avoid excessive promotions that could lead to a surge in orders that your fulfillment capabilities cannot keep up with, as this will actually lower your reputation.

Spread risk across multiple sites. Sellers operating on multiple platforms can develop separate strategies for the reputation thresholds on each platform to prevent fluctuations on a single platform from affecting their overall business.

X. Checklist for Improving Reputation at the Mexico Site

Before and after the new regulations take effect, we recommend that sellers on the Mexico marketplace conduct a self-assessment of the following items one by one:

• [ ] Export the number of orders completed in the last 60 days and determine whether the 101-order threshold has been met.
• [ ] View the reputation dashboard in the admin panel to confirm the calculation cycle used after the new rules take effect.
• [ ] Export records of voluntarily canceled orders, shipping anomalies, and delivery anomalies from the past 365 days.
• [ ] Analyze the causes of abnormal orders and develop corrective measures.
• [ ] Check your inventory synchronization settings to prevent automatic cancellations due to overselling.
• [ ] Assess the stability of the first-leg logistics and secure shipping capacity before the peak season.
• [ ] Verify the response times of Spanish-speaking customer service representatives to reduce buyer complaints.
• [ ] Set safety stock levels and pre-order limits for high-risk SKUs.

After completing the above eight self-assessments, sellers can gain a clear understanding of their reputation status and optimize their fulfillment process in a targeted manner.

IX. The Impact of Reputation Rules on Ad Placement

Meike Duo's reputation score not only affects organic traffic but also directly impacts the effectiveness of ad campaigns. Sellers with low reputation scores typically face the following restrictions:

The weighting for ad auctions has decreased. The platform gives priority to ads from sellers with good reputations; when bids are equal, sellers with higher reputations are more likely to secure ad placements.

Registration for the promotion is limited. Platform-wide sales events, flash sales, free shipping promotions, and other similar activities often have credit rating requirements, and sellers with low credit ratings may be excluded.

Buyer confidence is declining. If a "poor reputation" indicator appears on a product detail page or in search results, the conversion rate will drop significantly.

Advertising budget efficiency has declined. A low reputation leads to a decline in conversion rates, resulting in fewer orders for the same advertising spend and higher customer acquisition costs.

Therefore, reputation management should not be viewed solely as an operational metric, but rather integrated into the overall traffic and advertising strategy. While pursuing order growth, sellers must place equal emphasis on fulfillment quality, customer service response times, and return management.