US IOR Checklist for China Ecommerce Sellers Before September 2026
The New US IOR Compliance Signal
CBP’s August 19, 2026 Federal Register notice says the agency is reviewing importer-of-record data submitted on CBP Form 5106. From September 18, 2026, CBP says an IOR number may be immediately voided when the information is incomplete or inaccurate, which would make the number invalid for entering imported merchandise.
For China-based sellers, the key lesson is administrative rather than financial: a shipping quote or delivery plan is not complete until the legal importer, customs broker and filing information have been verified.
How IOR Data Connects to China-to-US Shipping
The IOR is the party identified to CBP for the U.S. entry and associated customs obligations. A freight forwarder, overseas factory, U.S. warehouse or ecommerce platform may support the shipment, but none is automatically the IOR merely because it handles transportation or fulfillment.
Before dispatching China-to-US shipping, sellers should align the sales contract, commercial invoice, packing list, entry instructions and broker records. The applicable importer structure varies by transaction and product, and no universal IOR model is confirmed by the notice.
Records Sellers Should Reconcile
- Legal importer name and business structure.
- Physical business address and mailing address.
- Importer-owned email address and phone number.
- EIN, SSN or CBP-assigned number, as applicable.
- Product classifications, origin records and commercial invoice details.
- Current customs broker power of attorney executed directly with the IOR.
CBP specifically warns against using a registered agent, broker, freight forwarder, post-office box, business service center or another party’s address as the IOR’s physical address. Sellers should follow the official Form 5106 instructions for the complete filing requirements.
Questions for Brokers and Logistics Partners
Ask the broker who submitted or will submit Form 5106, how the IOR identity was verified and when the record was last updated. Ask the freight forwarder whether it is acting only as a transport provider or has a separate contractual customs role. Keep written answers with the shipment file.
CBP’s notice does not set a standard broker fee, customs clearance time, duty rate or reestablishment time for every case. Those items vary by entry, product, port and service arrangement and should not be estimated from the notice.
Action Checklist
- Identify the legal US IOR for each sales channel and product line.
- Compare the IOR’s CBP Form 5106 data with corporate, tax and warehouse records.
- Correct any third-party contact or address information that does not directly belong to the IOR.
- Confirm a direct and valid broker power of attorney.
- Build a pre-dispatch review for invoices, origin, classification and importer data.
- Finish corrections before September 18, 2026 and monitor CBP announcements.
This checklist addresses U.S. importing only. Sellers shipping to Canada, the UK, the EU or Australia need separate importer, tax and customs reviews for those destinations.