At 12:01 a.m. Eastern time on 22 August, an additional 50 percent duty took effect on 554 eight-digit tariff lines of Canadian origin, imposed under Section 338 of the Tariff Act of 1930. USMCA origin gives no relief. The scope reaches far past the three sectors named in the complaints: refrigerating equipment, filling and sealing machinery, mixing and grinding machinery, filtration parts, plastic sacks and bags, cement, furniture, wood and paper products and textiles all sit inside the annexes. Canada suspended negotiations the previous evening and will match the action dollar for dollar from Tuesday 8 September, so buyers on both sides of the border have sixteen days to identify exposure by tariff line and act on entry timing.
Key takeaways
The Section 338 duty is 50 percent ad valorem, additive to every other duty and fee, effective for goods entered for consumption or withdrawn from warehouse on or after 12:01 a.m. ET on 22 August 2026.
Scope is defined by the 8-digit HTSUS lines listed in U.S. Note 51 to Subchapter III of Chapter 99, filed under new headings 9903.03.12 through 9903.03.16. Screening by sector name will miss most of your exposure.
Goods already subject to Section 232 duties are carved out at 0 percent additional under heading 9903.03.15. After the carve-out, Global Trade Alert measures covered trade at 17.7 billion dollars, against roughly 20 billion dollars gross, and puts the resulting rise in Canada's trade-weighted US tariff at 1.89 points, to 6.27 percent.
Canada suspended talks on the evening of 21 August. Prime Minister Carney confirmed on 22 August that Canada will match the tariffs dollar for dollar, concentrated in steel, dairy, appliances, agricultural equipment, pulp and paper and electronics, in force the Tuesday after Labour Day, 8 September 2026.
The Rhine gauge at Kaub hit 6 cm on Friday 14 August, a record low against the previous mark of 25 cm set in October 2018. Barge load factors fell to 10 to 20 percent. Germany's Federal Institute of Hydrology reported on 20 August that rain brings temporary respite, not sustained recovery.
German Sunday and holiday driving-ban exemptions granted for low-water replacement traffic expire on 31 August in most federal states. Rhineland-Palatinate and Saarland run to 30 September. Road contingency built on those exemptions needs re-papering inside eight days.
The Panama Canal Authority issued Advisory 29-2026 on 20 August, cutting Neopanamax slots to nine and Panamax slots to 25 from 3 September, then Panamax to 23 from 15 September, and restructuring daily auctions into four market groups.
Brent settled near 93 dollars on Friday 21 August, up more than 6 percent on the week and a second consecutive weekly rise, while the 30-year US Treasury yield reached 5.34 percent on 18 August, the highest since 2007.
What defined the week
The week turned on a legal mechanism, not on a price. Section 338 of the Tariff Act of 1930 has never before been used by any president to impose a tariff. Unlike Section 301 or Section 232, the statute requires no investigation by the International Trade Commission, the US Trade Representative or the Department of Commerce. A presidential finding of discrimination and a proclamation are sufficient, and the duty takes effect 30 days later. Three proclamations signed on 20 July 2026 made that finding against Canada on dairy quota eligibility, on Canada's 25 percent surtax on US-origin motor vehicles, and on provincial boycotts of US alcohol. The remedy in each case was a 50 percent duty on a designated basket of goods, with no relief for goods certified as originating under USMCA.
What separates this week from last is that the duty stopped being a negotiating instrument and became a payable. An 18 August proclamation suspended the duties for three days, moving the effective date from 19 August to 22 August. CBP published filing guidance on 21 August at 11:16 p.m. Eastern. Canada's negotiators were recalled to Ottawa the same evening. The duty went live at midnight.
Draw the line between two things carefully, because conflating them will cost money. The first is the sector named in each complaint. The second is the basket of goods carrying the duty. They are not the same basket. The motor vehicle proclamation covers 439 eight-digit lines and accounts for 19 of every 20 dollars in scope, yet none of those 439 lines sits in the tariff schedule's vehicles chapter. The closest the list comes to a car is parts of car seats, classified as furniture. Holland and Knight identifies representative Chapter 84 entries including HTS 8418.69.01 for refrigerating equipment, 8421.99.01 for parts of filtering and purifying machinery, 8422.30.91 for filling and sealing machinery and 8479.82.00 for mixing, grinding and screening machinery. A food or beverage manufacturer with no dairy, no alcohol and no vehicles in the bill of materials is squarely exposed through process equipment, spares and packaging.
The carve-outs work by the same logic. Goods already paying Section 232 duties are excluded, and the exclusion is a closed list keyed to Chapter 99 heading 9903.03.15: steel, aluminium and copper articles and derivatives, passenger and commercial vehicles and their parts, medium and heavy duty vehicles and their parts, wood products, semiconductor articles and patented pharmaceutical articles. Civil aircraft articles sit at 0 percent under heading 9903.03.16, with unmanned aircraft expressly outside the exclusion. Energy, potash, fish and certain critical minerals are absent from the lists. Everything else on the annexes pays the full 50 percent, whatever the USMCA certificate says.
Two other developments compounded the week for anyone buying physical goods into or out of Europe. The Rhine reached a record low at Kaub on 14 August and stayed in extreme low-flow ranges through the week, with force majeure declarations across European polyols, plasticisers, surfactants and butadiene. German manufacturing recorded its strongest reading in 51 months at the same time, so demand rose while the primary bulk artery ran at a fraction of capacity. And the Panama Canal Authority cut transit slots on 20 August, reversing an expected draft increase, at a point when transpacific container spot rates were already climbing.
Key developments
- What exactly did Section 338 change for a US importer of Canadian goods?
What happened
President Trump signed three proclamations under Section 338 of the Tariff Act of 1930 on 20 July 2026, published at 91 FR 46639, 91 FR 46653 and 91 FR 46663. Each imposes an additional 50 percent ad valorem duty on a designated list of goods of Canada. The dairy proclamation covers 52 subheadings, the alcoholic beverages proclamation 63 subheadings including wood and paper products and hockey equipment, and the motor vehicles proclamation 439 subheadings covering agricultural products, textiles, wood products, cement, furniture, consumer goods and machinery and electrical equipment from Chapters 84 and 85. Proclamation 11056, issued 18 August, suspended the duties until 12:01 a.m. ET on 22 August. CBP issued CSMS number 69606660 on 21 August with filing instructions and an attached HTS list. Talks collapsed on the night of 21 August and the duty took effect on schedule.
Why this matters
The operative test is not your sector and not your USMCA status. The operative test is whether your 8-digit HTSUS classification appears in U.S. Note 51 to Subchapter III of Chapter 99, and if so, in which subdivision. Subdivisions (b)(1), (b)(2) and (b)(3) carry 50 percent under headings 9903.03.12, 9903.03.13 and 9903.03.14. Subdivisions (c) and (d) carry 0 percent under headings 9903.03.15 and 9903.03.16. The duty is additive. CBP states covered goods remain subject to antidumping, countervailing and all other applicable duties, taxes, fees and charges in addition to the Section 338 duty, and specifies the entry summary reporting sequence: Chapter 98 first, then Chapter 99 additional duties, then Section 301, then Section 122, then Section 232, then Section 201.
Work the arithmetic on one line. Take a shipment of Canadian-origin plastic sacks and bags of heading 3923, entered value 500,000 dollars, entered on 24 August, certified USMCA originating. Before 22 August the shipment entered free of duty under USMCA preference. From 22 August the same shipment carries 250,000 dollars of Section 338 duty. The USMCA certificate changes nothing. Now compare a Canadian steel derivative article of the same value already paying Section 232. The steel article falls in subdivision (c), files under 9903.03.15 and pays 0 percent additional. Two shipments of identical value, from the same country, on the same day, separated by 250,000 dollars of duty on the strength of which Chapter 99 heading applies. Plastic sacks and bags is the largest single line paying the full rate, at 0.69 billion dollars of 2025 imports.
Executive implications
Trade compliance, inside five working days: run every Canadian-origin part number entered in the last twelve months against the CBP HTS list attached to CSMS 69606660, and tag each line to one of the five Chapter 99 headings. Report the result as annualised duty at risk, by heading.
Note one filing risk while doing so. The CSMS rate table lists headings 9903.03.12 through 9903.03.16, but the Chapter 98 and drawback paragraphs in the same message refer to headings 9903.04.12 to 9903.04.14. Treat the 9903.03 series and the attached HTS list as controlling, and confirm with CBP's Trade Remedy Branch before filing anything unusual.
Procurement, inside ten working days: pull every Canadian supplier contract on covered lines and read the duty allocation, Incoterms, price adjustment and change-in-law clauses. Establish who pays. Where the contract is silent and the Incoterm is DDP, the supplier absorbs the 50 percent and your continuity risk rises, so assess supplier solvency before assuming the cost stays with them.
Finance and treasury: the additional duty is subject to drawback, so re-exported goods recover it. Quantify your annual re-export volume on covered lines and confirm your drawback programme captures the new duty. Covered goods admitted to a foreign trade zone on or after 22 August must be admitted under privileged foreign status; confirm with your broker how zone status affects goods admitted before 22 August.
- How should you read Canada's response, and what lands on 8 September?
What happened
Prime Minister Mark Carney delivered remarks in Ottawa on 22 August confirming he had suspended negotiations and recalled Canada's negotiators the previous evening. His words: "Canada will match Washington's new tariffs dollar for dollar in order to protect Canadian workers, farmers, families, and businesses." He named the target sectors as steel, dairy, appliances, agricultural equipment, pulp and paper and electronics, and confirmed the measures will include products currently subject to US Section 232 and Section 338 tariffs. Details are to be released in the coming days, with entry into force the Tuesday after Labour Day, which is 8 September 2026. Carney also confirmed a 25 billion dollar Canadian support package for workers and businesses affected by US tariffs.
Why this matters
Two dates now bracket the decision. The 50 percent US duty is already payable. The Canadian counter-measure lands in sixteen days, and the target list is not yet published. Canadian buyers importing US-origin steel, appliances, agricultural equipment, pulp and paper and electronics have a defined window to accelerate entries before 8 September, on the same entry-date logic that governed the US action. US exporters to Canada in those categories have the same window to move goods and to renegotiate pass-through terms.
Note what Carney also said about what Canada had offered and withdrew: dropping remaining Canadian retaliatory tariffs on steel, aluminium and autos, encouraging provinces to return US alcohol to shelves, and administrative measures on dairy supply management. Those three items map directly onto the three Section 338 findings. Because the statute ties the rate to the level of discrimination found, resolution of any one of the three underlying issues supports a reduction in the corresponding basket. The negotiating path is still visible even after the collapse. Plan for the duty, and build the contract language to release the cost if the duty falls.
Executive implications
Category leads with Canadian entities: identify US-origin purchases in the six named sectors, quantify the volume scheduled to cross the border between now and 8 September, and instruct logistics to prioritise those entries this week. Do not work from planned ship dates. Work backward from realistic arrival and entry dates.
Legal and commercial: insert a duty-release mechanic into any price adjustment agreed in the next two weeks, so a reduction or revocation of either the Section 338 duty or the Canadian counter-measure flows back rather than sticking as a permanent price increase. Under the statute the President retains authority to suspend, amend or revoke a Section 338 proclamation at any time.
- Why does a river gauge in Germany belong in your cost model?
What happened
The Kaub gauge on the Middle Rhine stood at 6 cm on Friday 14 August, a record low. The previous low before this summer was 25 cm, set in October 2018. Barges still operating are carrying 10 to 20 percent of normal payload. Germany's Federal Institute of Hydrology reported on 20 August that the Rhine, Danube and Elbe had fallen several centimetres below their lowest previously observed levels during the reporting week, and that recent and forecast rainfall brings temporary respite but not sustained recovery, which would need further intense rain of the kind normally seen in autumn or winter. The BfG six-week forecast has the Kaub median weekly mean rising from 26 cm to 43 cm, then to roughly 100 cm by late September, and treats a return to extreme lows through late September as likely. Covestro issued a force majeure notice on 7 August covering its polyether polyol lines. BASF declared force majeure on DINP and DPHP plasticisers at Ludwigshafen and subsequently on several European surfactants. LyondellBasell declared force majeure on butadiene from Wesseling. Freight from Rotterdam to points south of Kaub has been reported at roughly 150 euros per tonne against about 20 euros in normal water.
Why this matters
This is a physical availability constraint, not a price signal. Covestro has noted that replacing one barge of 1,500 tonnes takes 60 trucks. Bulk road substitution needs specialised tankers, silos and tippers, trained staff and compliant receiving facilities, and such equipment is thin in the market. Rail help is real but bounded: DB Cargo is providing additional wagons and DB InfraGO has appointed a low-water coordinator, but the right-bank Rhine line between Troisdorf and Wiesbaden is fully closed for reconstruction until 12 December, pushing rail freight onto the left bank and longer diversions.
Set this against demand. The HCOB Germany flash manufacturing PMI printed 54.1 in August, published 21 August, up from 52.2 in July and the highest reading in 51 months. The eurozone flash manufacturing PMI rose to 52.8 from 51.9. European demand is accelerating into a constrained artery. Do not describe the market as structurally short of polyols or plasticisers, because the constraint is logistics, not capacity. The distinction matters for how you negotiate: a logistics constraint with a forecast partial recovery in September argues for bridging volume and holding annual price positions, not for locking multi-year cover at panic levels.
Executive implications
Supply continuity, this week: list every European supplier site on the Rhine corridor between Rotterdam and Basel and ask each one directly whether a force majeure notice is in force, what allocation percentage applies to your contract, and what the substitution plan is. Ask for the allocation basis in writing.
Logistics, inside eight days: German Sunday and public-holiday driving-ban exemptions for low-water replacement traffic expire on 31 August in most federal states. Rhineland-Palatinate and Saarland run to 30 September. Thuringia has opened Sundays to all trucks; Saxony-Anhalt still requires individual permits. Carriers must carry evidence linking the load to disrupted inland shipping, such as a cancelled barge booking, shipper declaration or transport order. If your September road contingency assumes weekend running, confirm the state-by-state position and produce the paperwork now.
Legal: force majeure notices received this month are contractual events with response deadlines. Diarise each one, check whether your contract requires you to mitigate, and record what you did. Also check whether your own downstream contracts let you pass through an upstream force majeure.
- What did the Panama Canal, the Gulf and the bond market do to your landed cost?
What happened
The Panama Canal Authority published Advisory 29-2026 on 20 August. From 3 September, daily Neopanamax slots fall to nine and Panamax slots to 25. From 15 September, Panamax slots fall to 23. Daily auction slots for Neopanamax, Supers and Regular vessels are reorganised into four groups: LNG and LPG; dry bulk, general cargo and others; container vessels, vehicle carriers, RoRo and refrigerated; and chemical, crude and product tankers. Customers holding a booking for the same transit date through other allocations lose eligibility for an additional slot where competitors exist. The Authority also postponed the planned Neopanamax draft increase to 14.63 metres from 26 August to 2 September, and the 14.48 metre adjustment from 3 September to 1 October.
In parallel, Brent traded near 93 dollars on Friday 21 August, more than 6 percent higher on the week and posting a second consecutive weekly rise, on continued disruption to Gulf supply. Strait of Hormuz vessel transits collapsed to six on 10 August, from 84 the prior week. Bab el-Mandeb tanker transits are down roughly 40 percent. Drewry's World Container Index rose 4 percent to 4,526 dollars per 40-foot container on 20 August, with Shanghai to New York up 9 percent to 9,507 dollars and Shanghai to Los Angeles up 9 percent to 6,802 dollars, while Shanghai to Genoa fell 2 percent to 4,955 dollars and Shanghai to Rotterdam fell 1 percent to 4,401 dollars. On fertiliser inputs, DAP stood at 795 dollars per tonne on 14 August, up 3.58 percent on the month, with China's phosphate export restrictions extended through August 2026 and now covering an estimated 50 to 80 percent of Chinese export volumes. The Trading Economics sulfur benchmark sits 261.63 percent higher year on year, with Russia's export ban running to 31 December 2026.
And the cost of carrying inventory moved. The 30-year US Treasury yield reached 5.34 percent on 18 August, the highest since 2007. The 10-year reached 4.74 percent. French and German 10-year yields hit their highest since 2008 and 2011 respectively.
Why this matters
Transpacific rates rose 9 percent in a week before the canal restriction takes effect on 3 September. The restriction reduces slot availability precisely as North American peak-season volume clears. Unbooked vessels face queueing rather than transit, which converts a rate problem into a lead-time problem. Separately, the Gulf disruption is now feeding three of your input lines at once: energy, ocean and air freight surcharges, and nitrogen and phosphate corridors.
Be careful with the fertiliser numbers. Urea at 390 dollars per tonne on 14 August is up 0.52 percent on the week but down 11.51 percent year on year. Nitrogen is falling. Phosphate and sulfur are rising, and the sulfur move is driven by an export ban and a shipping corridor, not by a demand surge. Value and volume behave differently here, so do not read a phosphate price rise as evidence of tight demand.
Executive implications
Logistics, before 3 September: confirm booking status rather than schedule status for every Panama routing in September and October. A confirmed reservation through the Transit Reservation System is the only mechanism guaranteeing a transit date. Where no reservation exists, price the alternative now: Suez, all-water East Coast via alternative routings, or West Coast plus rail.
Category leads on packaging and resin: model a bunker and surcharge sensitivity at Brent 93 dollars and at 105 dollars, and identify which contracts carry an index pass-through and which are fixed. Report the exposure in currency, not in percentage.
Treasury and procurement together: any pre-buy decision taken to beat 8 September now carries a materially higher carry cost. Price the inventory at your actual marginal borrowing rate, not at last year's rate.
What this means for category strategy
Direct materials into a US plant from Canada. Your first task is not sourcing, it is classification. The 50 percent applies by tariff line, so an accurate 8-digit classification is now worth 50 percent of entered value on covered goods. Two actions carry the most financial consequence. First, verify classification on every covered Canadian line, because a misclassification either overpays 50 percent unnecessarily or creates a penalty exposure. Second, test whether any covered good qualifies under the Section 232 carve-out at 9903.03.15, because the carve-out heading moves the additional rate from 50 percent to zero. On a 20 million dollar annual Canadian spend at the full rate, the difference between the two headings is 10 million dollars a year.
Capital equipment and MRO. The exposure most likely to be missed is process machinery. Filling and sealing machinery, mixing and grinding machinery, filtration parts and refrigerating equipment are on the motor vehicle annex. A 2 million dollar Canadian-built filling line entered on 1 September carries 1 million dollars of additional duty. Where an equipment order is signed but not yet shipped, the decision points are entry timing, re-siting the build, and who bears the duty under the contract. Check the purchase order today rather than at commissioning.
Packaging. Plastic sacks and bags is the largest single line paying the full 50 percent, at 0.69 billion dollars of 2025 imports. For a US food or beverage manufacturer buying flexible packaging from Canada, the landed cost step is 50 percent of entered value with no USMCA offset. Alternative sourcing from Mexico or a US converter now competes against a 50 percent handicap rather than a small preference gap, which changes the answer on volumes previously judged uneconomic to move.
European chemical inputs. Treat polyols, plasticisers, surfactants and butadiene as allocation risks through September, not as price risks. Secure volume, document allocation, and hold your annual price position. The BfG forecast supports partial recovery through September rather than a step-change, and paying a structural premium against a logistics event is the expensive error here.
Fertiliser and agricultural inputs. Phosphate and sulfur are the constrained lines, nitrogen is not. Where your ingredient contracts index to a general fertiliser basket, the basket now mixes a falling nitrogen component with a sharply rising sulfur component. Decompose the index before accepting a pass-through.
How leading organizations compress decision velocity
Take one attribute from this week: the 8-digit HTSUS classification held against every purchased part, kept current, and joined to spend and to supplier.
A legacy operating model discovers exposure through the broker. Guidance publishes at 11:16 p.m. on 21 August. The duty starts at 12:01 a.m. on 22 August. The compliance team downloads the annex, sends a spreadsheet to category managers, and asks them to identify affected parts. Category managers reply with product descriptions rather than tariff lines. Someone starts mapping descriptions to codes. Two weeks later a partial list exists, entries have already been filed at the higher rate, and nobody knows the annualised number well enough to take it to the board.
A continuous intelligence model runs the annex against the part master overnight. Every purchased part already carries a validated 8-digit code, a country of origin, an annual spend and a supplier. The list of affected part numbers, the annualised duty at risk and the subset qualifying for the 9903.03.15 carve-out are available before the first covered entry is filed. The category team spends its two weeks negotiating contract terms and entry timing rather than building a list.
The separating attribute is the classification, held at part level and maintained as a live field rather than reconstructed under deadline. Sector tags, commodity codes and supplier categories do not substitute, because this action does not follow sectors. A food company screening for dairy, alcohol and vehicles finds nothing and concludes it is unaffected. The same company screening by tariff line finds its filling machinery, its filtration spares and its flexible packaging.
The Kodiact perspective
The instinct this week was to pull volume forward and beat the effective date. The arithmetic favoured it heavily. Twenty million dollars of covered Canadian purchases entered before 22 August avoided 10 million dollars of duty; carrying that inventory for six months at a 7 percent marginal borrowing rate costs roughly 700,000 dollars. The decision was not close.
Yet many organisations did not make it, and the reason was not capital. The reason: no single team held both numbers. Procurement knew the supplier and the volume but not the tariff line. Compliance knew the tariff line but not the annual spend. Treasury knew the borrowing rate but had no view of the duty exposure until an invoice arrived. Each function was competent inside its own boundary and blind at the seam. The seam is where the 10 million dollars sat.
This is the case for treating procurement as a balance sheet function rather than a cost-reduction function. The 30-year Treasury at 5.34 percent, the highest since 2007, means inventory decisions now carry a visible financing charge that the finance team will scrutinise. The 50 percent duty means sourcing decisions now carry a duty charge the compliance team owns. Neither team is equipped to arbitrate the other's number. Only a procurement function holding classification, spend, supplier terms and the cost of capital in one model is able to price the trade-off in the time available, and this week the time available was three days between guidance and effect.
Large brand companies that got this right did not have better forecasts. They had a part master where classification was a maintained field, and a working capital rate their category leads knew without asking. This is an unglamorous form of resilience, and it paid a measurable return between 21 and 22 August.
Boardroom questions
What is our annualised duty at risk on Canadian-origin purchases, split between the three 50 percent headings and the two 0 percent carve-out headings, and on what date was the figure last recalculated?
What percentage of our purchased part master carries a validated 8-digit HTSUS classification joined to spend and supplier, and how many parts were classified only at the 6-digit level?
What is our US-origin export volume to Canada in steel, dairy, appliances, agricultural equipment, pulp and paper and electronics scheduled to enter Canada between now and 8 September, and who is accountable for accelerating it?
How many of our European supplier sites sit on the Rhine corridor, how many have issued a force majeure notice this month, and what allocation percentage applies to our contracts at each?
What marginal borrowing rate did we use in the last pre-buy decision we approved, and does that rate reflect the 18 August move in long-dated yields?
Conclusion
The mechanism matters more than the rate. A statute dormant since the 1940s overrode a trade agreement's core preference on a presidential finding alone, with no agency investigation and a 30-day fuse, and the basket it hit does not track the sectors named in the complaint. Organisations that screened by sector concluded they were unaffected and were wrong. Organisations that screened by tariff line had their number before the first entry was filed. The same distinction runs through the rest of the week: the Rhine is a logistics constraint rather than a capacity shortage, phosphate is tightening while nitrogen falls, and the Panama restriction converts a rate question into a lead-time question. What separates the companies defending margin from those absorbing erosion is not better forecasting. It is whether the data needed to act arrives already joined, at the level the rule is written at.
Frequently asked questions
Which HTSUS headings do we file under, and what rate applies to each?
Headings 9903.03.12, 9903.03.13 and 9903.03.14 correspond to subdivisions (b)(1), (b)(2) and (b)(3) of U.S. Note 51 to Subchapter III of Chapter 99 and each carries a 50 percent additional ad valorem rate. Heading 9903.03.15 covers subdivision (c), the Section 232 carve-out list, at 0 percent additional. Heading 9903.03.16 covers subdivision (d), civil aircraft articles, at 0 percent additional. The Chapter 1 to 97 classifications corresponding to each Chapter 99 heading are in the HTS list attached to CBP CSMS number 69606660.
Does USMCA preference reduce the duty at all?
No. All three proclamations apply regardless of whether a good qualifies for preferential treatment under USMCA. This is a departure from the IEEPA-based Canada tariffs, which spared USMCA-originating goods. Certification of origin remains necessary for the underlying MFN treatment but provides no relief from the additional 50 percent.
Does the 50 percent replace existing duties or stack on top of them?
It stacks. CBP states covered goods remain subject to antidumping, countervailing and other applicable duties, taxes, fees, exactions and charges in addition to the Section 338 duty. It is additive, not a top-up to a ceiling. Where a good already pays Section 301 or Section 122, the 50 percent sits on top. The single exception operates as a carve-out rather than a cap: goods on the closed Section 232 list file under 9903.03.15 at 0 percent additional.
Is the duty triggered by shipment date or entry date?
Entry date. The duty applies to goods entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. Eastern time on 22 August 2026. A shipment leaving Canada on 21 August and entered on 22 August pays the duty. Work backward from realistic arrival and entry timing, confirmed with your carrier and broker, rather than forward from a planned ship date.
Which products are excluded, and how do I confirm my product qualifies?
Subdivision (c) of U.S. Note 51 excludes articles of aluminium, steel or copper and their derivatives; passenger vehicles and light trucks and their parts; medium and heavy duty vehicles and their parts; wood products; semiconductor articles; and patented pharmaceutical articles. Subdivision (d) excludes civil aircraft articles, their engines, parts, components and subassemblies, and ground flight simulators and their parts, but expressly not unmanned aircraft. Energy products, potash, fish and certain critical minerals are not on the tariff lists. Eligibility is determined by the enumerated 8-digit classifications in the annexes and the attached CBP HTS list, so confirm against the controlling list rather than against a product description.
Is drawback available, and how do foreign trade zones work now?
CBP states the additional duty is subject to drawback, so duty paid on goods subsequently exported is recoverable through your drawback programme. For foreign trade zones, covered goods admitted on or after the effective date must be admitted under privileged foreign status as defined in 19 C.F.R. 146.41, except goods eligible for domestic status under 19 C.F.R. 146.43. Confirm with your broker how zone status affects goods admitted before 22 August. Relief under many Chapter 98 provisions is preserved, with exceptions for subchapter XXIII and subheadings 9802.00.40, 9802.00.50, 9802.00.60 and heading 9802.00.80, where the additional duty applies to the value of the repair, alteration, processing or foreign assembly.
What is Canada doing in response, and when?
Prime Minister Carney confirmed on 22 August that Canada will match the US tariffs dollar for dollar, concentrated in steel, dairy, appliances, agricultural equipment, pulp and paper and electronics, and including products currently subject to US Section 232 and Section 338 tariffs. Details were not published as of 23 August. The measures come into force the Tuesday after Labour Day, 8 September 2026.
Is there anything else in the trade pipeline affecting industrial buyers?
On 18 August, Commerce extended by 20 days the deadline for determining the adequacy of antidumping and countervailing duty petitions on certain linear hydraulic cylinders and parts from Canada, China, India, Korea and Mexico, filed on 29 July 2026 by the Hydraulic Cylinders Fair Trade Coalition. The initiation deadline now falls on 8 September 2026. If your equipment or MRO spend includes linear hydraulic cylinders from those five origins, an initiation would put provisional duties on the horizon, so identify volume and alternative origins now rather than after a preliminary determination.