MailUSA USPS International Shipping in 2026: Electronic Customs Forms, HS Codes, and New Requirements
USPS International Shipping in 2026: Electronic Customs Forms, HS Codes, and New Requirements
International shipping through USPS has changed significantly. As of September 2025, all customs forms must be generated electronically — handwritten forms are no longer accepted. Enhanced item descriptions are mandatory, and six-digit Harmonized System (HS) codes are required for all commercial shipments. These changes affect everyone from eBay sellers shipping to Canada to businesses exporting products worldwide.
This guide covers the new requirements, how to comply, and how to avoid common mistakes that cause packages to be rejected or delayed at customs. For a comprehensive overview of international shipping options, see our international shipping guide.
The Electronic Customs Mandate
Since September 2025, USPS requires that all customs forms (PS Form 2976-A and PS Form 2976-B) be generated electronically through approved software. Handwritten pre-printed forms — the paper forms you used to fill out at the post office counter — are no longer accepted for international shipments.
What this means in practice:
- You must create customs declarations digitally using USPS Click-N-Ship, the USPS Customs Forms Online tool, or a third-party shipping platform (PirateShip, Stamps.com, ShipStation, etc.).
- The customs data is transmitted electronically to U.S. Customs and Border Protection (CBP) before the package enters the mail stream.
- A printed customs label is attached to the package, but the underlying data has already been transmitted digitally.
This change improves processing speed and reduces errors at international sorting facilities. Packages with properly formatted electronic customs data clear customs faster than those requiring manual data entry.
Enhanced Item Description Requirements
Generic item descriptions are no longer acceptable. According to USPS’s international shipping guidelines, you must provide specific descriptions of every item in the package:
| Not Acceptable | Acceptable |
|---|---|
| ”Electronics" | "Wireless Bluetooth earbuds, model XY-200" |
| "Clothing" | "Women’s cotton t-shirt, size medium, blue" |
| "Gift" | "Ceramic coffee mug, hand-painted, 12 oz" |
| "Merchandise" | "Stainless steel kitchen knife set, 5 pieces" |
| "Parts" | "Replacement brake pads for Honda Civic 2022” |
Why it matters: customs officials in the destination country use these descriptions to assess duties, taxes, and import restrictions. Vague descriptions trigger manual inspection, which delays delivery by days or weeks. In some cases, packages with inadequate descriptions may be rejected, returned, or destroyed.
HS Code Requirements
Six-digit Harmonized System codes are now required for all commercial international shipments. HS codes are the international standard for classifying traded goods — every product category has a specific code.
How to find the right code:
- USPS’s electronic customs tools attempt to suggest HS codes based on your item description. You do not need to look up codes manually in most cases.
- For manual lookup, use the U.S. International Trade Commission’s Harmonized Tariff Schedule or the World Customs Organization’s HS database.
- Your shipping platform (PirateShip, ShipStation, etc.) may auto-populate HS codes based on product category.
Common HS code categories:
| Product | HS Code |
|---|---|
| Books | 4901.xx |
| T-shirts | 6109.xx |
| Electronics (consumer) | 8471.xx - 8528.xx |
| Jewelry (costume) | 7117.xx |
| Coffee | 0901.xx |
Incorrect HS codes can result in the wrong duty rate being applied — either overcharging the recipient or triggering additional customs scrutiny. For sellers shipping frequently, investing time in correct classification pays off. For domestic shipping comparisons, see our FedEx vs UPS vs USPS guide.
USPS International Services in 2026
USPS offers four main international shipping services, per ParcelPath’s 2026 analysis:
| Service | Delivery Time | Tracking | Max Weight | Starting Price |
|---|---|---|---|---|
| Priority Mail Express International | 3-5 business days | Full tracking with delivery confirmation | 70 lbs | ~$45 |
| Priority Mail International | 6-10 business days | Full tracking | 70 lbs | ~$30 |
| First-Class Package International | Varies (7-21 business days) | Limited tracking | 4 lbs | ~$14 |
| International Flat Rate | 6-10 business days | Full tracking | 4 lbs (envelope), 20 lbs (boxes) | ~$30 |
International Flat Rate products follow the same concept as domestic Flat Rate — one price regardless of destination. The Small Flat Rate Priced Box ships anywhere in the world for one price, making it excellent for small, heavy international shipments.
Common Mistakes That Cause Delays
-
Undervaluing contents. Declaring a $200 item as “$20 — gift” is customs fraud. Destination country customs regularly flag suspiciously low declared values. If caught, the recipient may face fines, and the shipper may lose international shipping privileges.
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Missing phone numbers. Many countries require a recipient phone number for customs clearance. Include it on every international shipment — even if USPS does not require it, the destination country may.
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Prohibited items. Every country has different prohibited and restricted items. Perfume, lithium batteries, food products, and medications are commonly restricted. Check the USPS Country Conditions for Mailing before shipping. For guidance on fragile items, see our fragile items shipping guide.
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Insufficient packaging. International packages undergo more handling than domestic shipments. Double-box fragile items and use at least 2 inches of cushioning on all sides.
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Ignoring destination country import taxes. In many countries (including the EU), the recipient is responsible for import duties and VAT on incoming packages above a threshold. Inform your buyer in advance to avoid refused deliveries.
How to Ship Internationally with USPS: Step by Step
- Weigh and measure the package. International pricing is weight-based and varies by destination country and zone.
- Determine if any items are restricted. Check the USPS Country Conditions page for the destination country.
- Create the shipment online. Use USPS Click-N-Ship, PirateShip, or your preferred platform. Enter detailed item descriptions and let the system suggest HS codes.
- Declare the accurate value. Enter the actual purchase price or fair market value of each item.
- Print the label and customs form. The label and customs declaration print together as a single document.
- Drop off or schedule pickup. International packages can be dropped at any post office or included in a USPS Package Pickup. Our how to ship a package guide covers the full process.
The Bottom Line
USPS international shipping in 2026 requires more precision than it used to — electronic customs forms, specific item descriptions, and HS codes are now mandatory. But these requirements actually benefit shippers by speeding up customs clearance and reducing the likelihood of packages being held at the border. The key is completing the electronic form accurately the first time, using detailed descriptions, and declaring honest values.
Sources
- ParcelPath: USPS Customs Forms Guide 2026 — accessed March 26, 2026
- USPS: Preparing International Shipments — accessed March 26, 2026
- ParcelPath: USPS International Shipping Services 2026 — accessed March 26, 2026