De Minimis Week One: Why Postal Collapsed And Which Lanes Reopened

One week after the United States ended duty-free de minimis on Aug 29, U.S.-bound postal traffic saw a day-one collapse, then uneven reopenings where prepaid duty is active. Non-postal freight and express continue under standard U.S. entry rules. This is a week-one retrospective with lane case studies and the mail duty rules LSP teams must use when advising customers.

What Changed Since Our Initial Update

Traffic shock was confirmed by UPU with an 80 to 81 percent day-one drop in U.S.-bound mail and widespread operator suspensions.
Royal Mail stood up PDDP and says U.S. parcels are flowing using a prepaid duty model based on country IEEPA rates.
Canada Post adopted a prepaid requirement and introduced a Declaration ID as proof of duty secured before acceptance.
CBP expanded the qualified-party roster for international mail duty and published the two permitted duty methods with a six-month specific-duty window.
Non-postal clarification remained consistent. Express and freight clear under standard brokerage. Treat disruption as postal first.

Lane Case Studies With Deltas

United Kingdom → United States Royal Mail

Delta: Day 1 saw postal uncertainty. By week end Royal Mail activated Postal Delivered Duties Paid services so business shippers can continue.

Status now: PDDP available. Royal Mail calculates and prepays duty to CBP. Public pages and CEO commentary indicate flows are moving.
Duty basis: Royal Mail states duties will be assessed using country-specific IEEPA rates on declared value. They note they will only use the ad valorem approach.
Data to capture: item value and country of origin at item level, plus standard electronic customs data.
LSP action: confirm the customer’s product codes and ensure COO is clean. Quote with PDDP fee shown separately from postage.

France → United States La Poste

Delta: La Poste announced a temporary suspension for most parcels to the United States before Aug 29. Gifts between private individuals under 100 USD and documents remain eligible. As of week one, broad commercial parcel acceptance remains paused pending a compliant prepaid flow.

Status now: commercial goods via postal network remain restricted. Chronopost products are treated separately by La Poste.
Gift policy: gifts under 100 USD between private individuals allowed per operator guidance. Returns of purchased goods can trigger duties.
Data to capture: full item data including value and country of origin must be validated at tender once resumptions are announced.
LSP action: do not promise mail-based workarounds until La Poste publishes a prepaid duty path. Use express or bulk ocean replenishment instead.

Canada → United States Canada Post

Delta: Canada Post communicated that all U.S. postal shipments now require duties prepaid at origin. Week one guidance includes a Declaration ID that proves duties have been secured.

Status now: acceptance with proof of prepaid duties via Declaration ID for all goods regardless of value or origin.
Duty basis: carrier or a CBP-approved qualified party prepays and remits under CBP’s international mail process.
Data to capture: item value and country of origin, plus electronic customs data that ties to the Declaration ID.
LSP action: build the Declaration ID step into pre-alert checklists. Reject tenders that lack ID or item-level COO.

Mail Duty Mechanics You Must Use

Method 1 ad valorem duty equals the effective IEEPA tariff rate for the item’s country of origin times declared value.
Method 2 specific per item 80 USD if the origin country IEEPA rate is under 16 percent, 160 USD if 16 to 25 percent, 200 USD if above 25 percent. If a parcel has mixed origins, the highest applicable bracket applies to all items.
Who pays and files the postal carrier or a CBP-approved qualified party must prepay and remit monthly via Pay.gov, and must hold a sufficient bond.
Consistency rule the chosen method must be applied consistently and can be changed at most once per calendar month with at least 24 hours notice to CBP.
Time limit Method 2 is available for six months from Aug 29. After Feb 28, 2026, only ad valorem applies unless CBP extends the window.

Quick chooser

If items are single-origin and values are low, compare Method 2’s flat per-item cost to Method 1’s percentage on value.
If baskets are mixed origin, assume Method 2 uses the highest bracket for the whole parcel. Recheck Method 1 before you choose.
Pick one method for the month. Document which partner is the duty payer and keep the bond and Pay.gov workflow on file.

Decision Triggers For LSPs

Flip to express if prepaid duty plus admin fee under Method 1 exceeds your customer’s service promise gap against express transit.
Switch to bulk ocean if mixed-origin baskets push Method 2 above your margin, or if COO data quality is weak at item level.
Stay on mail only if a prepaid path is confirmed in writing, the duty payer is named, and data is complete at order capture.

Metric Box Week One

U.S.-bound postal traffic fell about 80 to 81 percent on Aug 29 versus the prior week, according to the Universal Postal Union.
At least 88 postal operators announced suspensions or restrictions in the first days.
Royal Mail reports U.S. parcels are flowing under PDDP. Canada Post is accepting with prepaid duty proof. La Poste remains limited to gifts and documents while a compliant process is built.

Compare postal workarounds against live container ETAs and B L milestones in TRADLINX Ocean Visibility so you can decide when to switch a customer from mail to bulk import with confidence.

References

Prefer email? Contact us directly at min.so@tradlinx.com (Americas), sondre.lyndon@tradlinx.com (Europe) or henry.jo@tradlinx.com (EMEA/Asia)