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US changes its 50% tariff list for Canadian-origin goods from 30 October

CBP confirms the current filing instructions and consolidated list for the 30 October changes: 100 additions under 9903.03.14 and 22 removals. UK sellers of affected Canadian-origin stock should check broker declarations and full entry costs; separate September import bans remain distinct.

By Scott GillettPublished 9 Sept 2026Last reviewed 30 Oct 2026Destination: United States
WHEN IT APPLIESIn force
Who this affects
UK businesses supplying affected Canadian-origin goods into the United States, including stock dispatched from a UK warehouse.
Seller action
Check before sending affected goods

Check Canadian-origin stock against CBP’s current consolidated list and the October annex. Ask your US broker to confirm the product code, 9903.03.14 where applicable, any separate prohibition and the full landed cost. The 9903.03.15 overlap relief is limited to qualifying 9903.03.13 goods; UK dispatch is not the tariff cutoff.

Effective dates / current position
Tariff-list changes: — In force
Selected-product import bans: — In force
Further Canadian-origin tariff-list changes: — In force
Timing follows the confirmed published schedule; it is not a fresh legal review.
Last reviewed
30 Oct 2026 — an editorial source check, separate from automatic timing.
Official source
Open the primary source ↗
Action required for affected Canadian-origin goods. The US has published another change to its additional 50% tariff list, applying from 30 October 2026. Check Canadian-origin stock sold into the US even if you send it from a UK warehouse. This is not a new general restriction on UK-origin goods.

Updated 30 October 2026: CBP has confirmed the filing instructions and current tariff list. Its 29 October notice implements the proclamation’s 100 added eight-digit tariff subheadings and 22 removals. This changes the scope of an existing additional duty—not the origin of goods dispatched from the UK, and not the separate September import bans.

What changes on 30 October?

For goods entered for consumption, or withdrawn from warehouse for consumption, from 12:01 a.m. Eastern Time on 30 October 2026, Part A of the new product annex removes listed Canadian-origin products from this additional 50% Section 338 duty; Part B brings listed products into it. The relevant date is the US consumption entry or warehouse withdrawal, not UK dispatch.

Removal from this list is not an exemption from every import charge. Other applicable duties remain possible, and the proclamation expressly preserves additional applicable Section 232 duties. Ask the US broker for the complete landed cost.

Which retail products should be checked?

The additions extend beyond vehicles. Examples in the official annex include:

Part A removals include corrugated-paper or paperboard cartons, boxes and cases under 4819.10.00 and specified other packaging, plywood and machinery subheadings. These examples are not a complete product list. The annex says descriptions are informational: the listed HTSUS provisions and exact product classification control.

Part B expressly excludes civil aircraft and aircraft parts meeting HTSUS General Note 6 criteria. An aviation-related description alone is not enough to establish eligibility.

Check the complete six-page October product annex: Part A removals and Part B additions (PDF) ↗. Annex II makes the corresponding changes to HTSUS Chapter 99, U.S. note 51(b)(3) (PDF) ↗.

CBP’s current filing instructions

CBP CSMS #70314289, issued on 29 October 2026, confirms that the 100 additional classifications are reported under 9903.03.14 from the 30 October consumption-entry cutoff. The product lists under 9903.03.12 and 9903.03.13 are unchanged.

The zero-rate overlap heading 9903.03.15 remains available only to qualifying goods subject to 9903.03.13. It is not an exemption for newly added 9903.03.14 products, and does not remove other applicable duties.

Download CBP’s complete seven-page list for 30 October (PDF) ↗. The 100 additions are shown in bold. Other products in that consolidated list were already covered; do not treat every listed category as newly added.

Before accepting affected US orders, give the broker your product specifications, classification and Canadian-origin evidence. Ask them to confirm the ordinary product code, the applicable Chapter 99 treatment, any separate restriction and full landed cost. The September CBP list below remains historical guidance.

Separate import bans from 29 September

The September proclamations set 12:01 a.m. Eastern Time on 29 September 2026 as the start of separate import prohibitions on selected Canadian-origin products. CBP’s 28 September implementation notice covers that phase. The 23 October tariff-list change does not remove those prohibitions. Paying extra duty does not make a prohibited import permissible.

The covered groups are:

Check your full ten-digit US classification against the annex’s listed tariff provisions and scope restrictions. Product category names are only a starting point.

September tariff background

The earlier proclamations changed the products covered by the existing additional 50% Section 338 tariff from 12:01 a.m. Eastern Time on 15 September 2026, for consumption entries or warehouse withdrawals for consumption. Read that earlier phase together with the further 30 October amendments above.

The revised lists add specified products across categories including cheeses, paper, metal articles, vehicles, boats and furniture, and remove some previously covered tariff items. Do not assume that a whole category has been added or exempted. Removal from this particular tariff does not remove other applicable duties.

September CBP filing instructions

CBP CSMS #69851916, issued on 11 September 2026 at 4:49 p.m. Eastern Time, explains how importers and brokers must declare the revised duties. It implements the previously announced changes rather than introducing a new general tariff on UK goods.

What does that exemption mean? Heading 9903.03.15 provides a 0% rate for this additional Section 338 duty on qualifying goods. It does not mean that every import charge is zero. A product that previously qualified may lose access to that exemption under the revised rules. Other applicable duties, anti-dumping or countervailing duties, taxes and fees can still apply.

The Chapter 99 number tells US customs which additional-duty treatment applies. It does not replace the product’s normal HTSUS classification. Give your US broker the product details and origin evidence, then ask them to confirm both codes and the total duty before you update your landed costs or selling prices.

Download CBP’s September tariff-code list (Word document; not consolidated for the 30 October changes) ↗

The 15 September changes concern duty liability. The 29 September measures are import prohibitions. They are not interchangeable.

September importation and entry cutoffs

The ban proclamations distinguish importation from entry for consumption. Covered goods imported before the 29 September cutoff but not entered for consumption, or withdrawn from warehouse for consumption, before that time remain subject to the additional 50% duty.

This is not a general exemption for goods dispatched before 29 September. Ask the US customs broker to confirm the relevant importation and entry dates; a dispatch date alone does not establish the applicable treatment.

What should UK sellers check?

These measures concern Canadian-origin goods entering the US. They are separate from Canada’s counter-tariffs on US-origin goods entering Canada.

For the original background, read US 50% tariffs on selected Canadian goods take effect—published 22 August 2026.

Specialist detail for importers and brokers

Drawback, Chapter 98 entries and US foreign-trade zones

These are specialist clearance arrangements, not extra steps every UK parcel seller must complete.

  • Drawback: CBP confirms that duties under 9903.03.12 to 9903.03.14 are eligible for drawback—a possible duty refund under the applicable rules. This is not an automatic refund; the importer or broker should check eligibility and evidence.
  • Chapter 98: properly claimed special-entry provisions can change whether the additional duty applies, but exceptions include subchapter XXIII, 9802.00.40, 9802.00.50, 9802.00.60 and 9802.00.80. For the listed repair, alteration and processing provisions, duty applies to that work’s value; for 9802.00.80 it applies to the assembled article’s value less the qualifying US products’ cost or value. Ask the broker to apply the exact CBP instructions.
  • US foreign-trade zones: affected goods must be admitted under “privileged foreign status” unless eligible for “domestic status”. The additional duty applies when the goods enter US commerce for consumption. This is a US customs-zone procedure, not a rule for an ordinary UK warehouse.

The 29 October notice restates these arrangements; it does not create automatic relief or a guaranteed refund. Read the current CBP instructions before using a specialist procedure ↗.

Official sources

The latest scope change was published on 23 October 2026; its legal application date is 30 October. CBP issued the implementation notice on 29 October. These are separate from this article’s original publication and latest review dates.

The following CBP material documents the earlier September tariff phase:

The following White House proclamations and annexes were published on 8 September 2026:

Updates to this article

  • Added CBP’s 29 October filing instructions and current consolidated tariff list. Clarified 9903.03.14, unchanged .12/.13 lists and the limited .15 overlap relief; linked current specialist instructions. Rechecked the October proclamation and complete annexes. Original 9 September Published date, URL and image preserved.

  • Added CBP’s 11 September filing instructions, the revised tariff-code list and the narrower 9903.03.15 exemption. Clarified that some removed broad codes are replaced by narrower chargeable codes. The 15 September tariff and 29 September import-ban dates, original publication date and article address are unchanged.

  • Rechecked CBP’s instructions and marked the tariff-list changes as now in force. Added an immediate check of broker declarations and DDP costs, distinguishing the US entry date from UK dispatch. The separate 29 September import bans remain upcoming; original publication date and URL retained.

  • Checked the 23 October proclamation and both complete annexes. Added the 30 October consumption-entry cutoff, 100 added and 22 removed eight-digit tariff subheadings, selected retailer examples and the distinction from separate September import bans. Labelled the older CBP list as September guidance, not a consolidated October list. Original Published date, URL and image retained.

Recorded editorial changes. Automatic timing labels do not change the publication or review dates.