Registering under an RFC tax ID is the go-to option for many Meitodo sellers just starting out—it’s low-cost and quick to set up, and it can indeed save you some money during the trial phase.

However, with the implementation of the 2026 tax reform and the refinement of the platform data synchronization mechanism, you can no longer reassure yourself that the risks associated with the “affiliation” scheme are merely “low probability.” Each of these five risks could send your store back to square one overnight.

💡 If you're currently using a borrowed tax ID and aren't sure whether you need to upgrade, feel free to add us on WeChat. qcygscszk or call 18676749275

Risk 1: Multiple Accounts Linked to One ID → Account Suspension Due to Association

Before the tax reform, it was common practice to link a single tax ID to multiple stores. However, now that the data synchronization mechanism between the platform and the SAT has been established, having multiple stores linked to a single tax ID is automatically flagged by the system as a “association risk.” If any one of these stores encounters an issue—such as an abnormally high return rate, a KYC trigger, or a complaint—all associated stores will be subject to joint review or even suspension.

It’s not that “if you keep your store clean, it won’t be shut down,” but rather that “if something goes wrong at another store registered under the same tax ID as yours, you’ll be dragged down with them.”

Risk 2: Loss of Control Over the Entity → Tax ID Cannot Be Transferred

A tax ID registered under a third party legally belongs to that third party. If the service provider experiences financial difficulties, disbands its team, or simply goes missing, the tax ID you’ve linked cannot be transferred to your own company’s name.

If the entity associated with your tax ID becomes non-compliant or is deregistered, the platform will automatically suspend your store’s payment receipt privileges. In this case, if you wish to register a new tax ID to replace the old one, you must first unlink the existing tax ID and then relink the new one. During this transition period, your store will be in a “no tax ID” status, and the platform will withhold taxes according to the 36% rate.

Risk 3: Sales Exceed Limit → Mandatory Upgrade or Freeze

There is an annual sales cap of 5 million pesos (just over 200,000 RMB) for businesses registered under a SAS tax ID. Sellers with stable monthly sales of 17,000 RMB or more will reach this cap within a year. If the limit is exceeded without upgrading their registration, they face tax account freezes and fines from the SAT.

Upgrading to an SA company means you’ll need to re-register the company, reapply for a tax ID, and re-link your store—the entire process isn’t just an “upgrade,” but rather “starting over from scratch.”

📌 Want to learn about the specific steps and costs involved in upgrading from a SAS affiliate to your own tax ID? Contact us for a detailed plan.
Cell phone: 18676749275 ｜ WeChat: qcygscszk

Risk 4: Input tax cannot be deducted → The overpaid tax is no small amount

Under the “affiliation” arrangement, you do not have your own corporate entity, so you cannot claim any input VAT credits for procurement, logistics, warehousing, and other related activities. While this arrangement may seem to save you the registration fee, the additional taxes you end up paying—for example, approximately 127,500 yuan per month based on a monthly turnover of 500,000 yuan—far exceed the registration fee.

Risk 5: Following the 2026 tax reform, real-time data synchronization will amplify all risks

Before the tax reform, there was a delay in the platforms“ data reporting to the State Administration of Taxation (SAT), which provided some ”leeway” for tax registration under another entity. After the tax reform, sales data and tax ID statuses are synchronized in real time to the SAT, and the time window for identifying and addressing any anomalies—such as invalid tax IDs, excess quotas, or multiple registrations under a single tax ID—has been significantly shortened.

The question isn’t “Can ”affiliation“ still be used?” but rather “How much longer can ‘affiliation’ be used?”

How do I know if I should upgrade?

Two simple criteria:

1. Has your monthly revenue stabilized at over 100,000? — If so, the combined cost of tax differentials and the risks associated with operating under someone else’s tax ID has already exceeded the investment required to obtain your own tax ID.
2. How long do you plan to operate in the Mexican market? — If you intend to establish a long-term presence, operating under someone else’s name is not a sustainable solution.

If both answers are “yes,”Having Your Own Tax ID Is the Only Way Out. It’s not a question of “whether,” but of “when.”

📞 If you decide to upgrade, or if you’d like to assess your risk level regarding registered agent services first, feel free to contact Qicaiying for a one-on-one solution.
WeChat: qcygscszk

Why choose Enterprise Caiying

What Can We Do for You—

• Domestic Company Registration: A valid business address (owned property), with cooperation for on-site bank verification, account opening, and invoice issuance; not a virtual or registered-only address.
• Mexican RFC Tax ID: Choose from two options—affiliation with an SA or self-registration. Each ID is linked to a single store on a one-to-one basis; we do not put client stores at risk.
• Meike Duo Store Setup: Dual-mode coverage for cross-border and local stores, providing end-to-end support from scratch—not just helping you submit documents
• Operations Coaching: Comprehensive coverage of product selection, listing, warehousing, advertising, and post-campaign analysis—it’s not just about creating a group chat and calling it a day

Why Trust Us—

• Founded in 2015, we have supported more than 500,000 business owners and help establish over 20,000 new domestic companies and 10,000 new Hong Kong companies each year.
• A professional team of over 400 people: domestic business services consultants with at least 5 years of experience, international experts with an average of over 8 years of experience, and an accounting team in the Greater Bay Area with an average of over 10 years of experience
• Headquartered in Shenzhen, with offices in Beijing, Shanghai, Guangzhou, and Hangzhou; 4 corporate secretarial firms in Hong Kong and 1 in-house accounting firm
• The in-house “Yichuangbao” CRM/ERP system, developed over five years with an investment of tens of millions, features standardized and visualized delivery processes.

For more information on opening a store on Meike, please contact Qicaiying:

📱 Cell: 18676749275
💬 WeChat: qcygscszk

Qicaiying | Your one-stop solution for Meikeduo—stress-free, effortless, and pitfall-free.