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Canada Section 338 Tariffs: The Full HTS List

Dataset vintage 2026-10-15 · 664 records · 654 currently active · +50% ad valorem · every row linked to its CBP source document

Under Section 338 of the Tariff Act of 1930 (19 U.S.C. §1338), the United States imposes an additional 50% ad valorem duty on certain articles the product of Canada, offsetting Canadian discrimination against US commerce. Three proclamations signed on 2026-07-20 — 11046 (alcoholic beverages), 11047 (dairy) and 11048 (motor vehicles and a wide annex spanning wood, furniture, paper and metals) — mount the duty through three Chapter 99 provisions. This page publishes the complete line-level list: search it with your browser’s find-in-page (Ctrl+F) to check whether your 10-digit HTS code is on it.

Counting basis: 554 + 110 = 664 records, 654 active

The numbers above follow one explicit convention: one record = one 10-digit HTSUS code mounted under one Chapter 99 provision. The 554-code baseline ties out exactly to the July CBP attachment (“Section 338 Canada HTS LIST Final”: 63 codes at 9903.03.12 + 52 at 9903.03.13 + 439 at 9903.03.14). The 2026-09-15 CBP modified list adds 110 codes and removes 10; the 10 removed rows stay in this dataset with a removed status for audit trail, giving 664 total records and 654 codes currently carrying the duty. Where CBP’s CSMS #69851916 prose says “122 additional classifications”, its own attachment yields a set difference of +110/−10 against the July list — we publish the attachment-derived figures and record the discrepancy instead of silently picking one. Two further carve-out provisions in the same attachment, 9903.03.15 and 9903.03.16, map ~612 mostly zero-rate aviation and Section-232-related codes and are deliberately not part of this dataset: they mark exclusions from the measure, not taxable lines.

Timeline

The three Chapter 99 provisions

Full line-level list (664 rows)

Sorted by HTS code. Each HTS code links to the CBP attachment that governs it (the authoritative carrier of the line-level list; the Federal Register notices print their annexes as images). The product family follows directly from the Chapter 99 provision (9903.03.12 = alcoholic beverages, 9903.03.13 = dairy, 9903.03.14 = motor vehicles & annex), so the table omits a separate family column. Status reflects the 2026-09-15 modification: green = active since 2026-08-22, amber = added effective 2026-09-15, grey = removed after 2026-09-14.

Frequently asked questions

Sources & methodology

Every figure on this page derives from the archived official documents below. Raw originals (PDF, DOCX, bulletin HTML and the USITC Chapter 99 export) are kept with SHA256 checksums in our pipeline; the dataset was built by an idempotent, checksum-gated parser and re-verifiable from those inputs. If a discrepancy appears, the CBP attachment governs the line-level list and the Federal Register notices govern the legal instruments.

• Proclamation 11046 — alcoholic beverages (91 FR 46639)
• Proclamation 11047 — dairy (91 FR 46653)
• Proclamation 11048 — motor vehicles & annex (91 FR 46663)
• Proclamation 11056 — temporary suspension of the duties (91 FR 54789)
• CBP CSMS #69606660 guidance bulletin (implementation, Ch. 99 exceptions)
• CBP CSMS #69851916 guidance bulletin (September 15 revision)
• CBP line-level list, initial PDF: “Section 338 Canada HTS LIST Final” (2026-08-21)
• CBP line-level list, modified DOCX, effective 09/15/26 (2026-09-11)
• USITC Harmonized Tariff Schedule, Chapter 99 export (cross-check)

Need the whole schedule, not just one remedy? The free tariff calculator stacks every matching Chapter 99 add-on onto the base rate for any HTS line, and the trade-remedy chapter snapshot maps all 637 active provisions by chapter.

Sources: Federal Register Publishing Office (Proclamations 11046/11047/11048/11056); U.S. Customs and Border Protection CSMS bulletins #69606660 and #69851916 with attachments; USITC Harmonized Tariff Schedule.