Prepay U.S. duties and generate your Japan Post shipping documents with Zonos.
As of August 29, 2025, a U.S. executive order requires all shipments into the U.S. to be assessed duty. This includes postal shipments. As of July 24, 2026, the duty prepayment requirement applies to all Japan Post shipments valued under $2,500 USD (up from $800 USD). You're required to prepay U.S. duties before your shipment is dispatched.
To support this change, Japan Post has partnered with Zonos to provide two compliant shipping solutions:
For individuals and small businesses who ship occasionally
The Zonos app is a free mobile app that handles the entire shipping process — duty calculation, payment, label creation, and customs documentation — all before visiting the post office.
Key features:
AI-powered photo classification to identify items and assign HS codes
Duty calculation and payment in JPY
Japan Post shipping label and customs document generation
Verified Accounts let businesses with a Japan Post deferred-payment (後納) contract create U.S.-bound labels with duties prepaid. Zonos calls the Japan Post Label API on the merchant's behalf, generates the label and Declaration ID, and links them — so every shipment leaves Japan duty-prepaid and customs-compliant.
With a Verified Account:
Every shipment includes a Declaration ID
Zonos creates the Japan Post label using your Later Pay Number
Duties are calculated, invoiced by Zonos, and paid directly to CBP
Postage continues to be billed by Japan Post to your Later Pay Number
View shipments and labels in the Zonos Dashboard
No subscription fee — only pay duties and postal fees
To continue shipping to the U.S. with Japan Post, choose the solution that fits your business. Both options ensure your shipments meet U.S. requirements and clear without delays.
Zonos and Japan Post
Zonos and Japan Post
Prepay U.S. duties and generate your Japan Post shipping documents with Zonos.
As of August 29, 2025, a U.S. executive order requires all shipments into the U.S. to be assessed duty. This includes postal shipments. As of July 24, 2026, the duty prepayment requirement applies to all Japan Post shipments valued under $2,500 USD (up from $800 USD). You're required to prepay U.S. duties before your shipment is dispatched.
To support this change, Japan Post has partnered with Zonos to provide two compliant shipping solutions:
Zonos app
For individuals and small businesses who ship occasionally
The Zonos app is a free mobile app that handles the entire shipping process — duty calculation, payment, label creation, and customs documentation — all before visiting the post office.
Key features:
Access the Zonos app:
For detailed instructions, see the Zonos app for Japan Post shippers guide.
Verified Accounts
For merchants and businesses who ship regularly
Verified Accounts let businesses with a Japan Post deferred-payment (後納) contract create U.S.-bound labels with duties prepaid. Zonos calls the Japan Post Label API on the merchant's behalf, generates the label and Declaration ID, and links them — so every shipment leaves Japan duty-prepaid and customs-compliant.
With a Verified Account:
For full details, see the Verified Accounts for Japan Post guide.
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