The independent observatory for US trade — ship movements,
customs records and policy events, measured and tested.
What United Kingdom actually pays on described in additional u.s. note 18 to this chapter and ent
Importers of HS 0406.90 (described in additional u.s. note 18 to this chapter and ent) from United Kingdom actually paid 21.49% on the taxed portion of the value in 2026-06 — 21.49% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 12%. Over the window the rate on the taxed portion moved 12.58% → 21.49%, with the largest single step +6.4pp in 2025-05. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 12% — importers actually paid 21.49%, so the trade-war overlay added 9.5 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "0406.90", origin: "United Kingdom") · see it at trimtabist.com/tariffs
HS 0406.90. The schedule base rate is
12%; importers from United Kingdom actually paid 21.49% on the
dutiable value in 2026-06 — the trade-war overlay added 9.5 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 12.58% (2023-07) → 21.49% (2026-06), largest single step +6.4pp in 2025-05.
The trade-war measures that name United Kingdom or this sector
15 Chapter-99 measures name United Kingdom; scope mapping is partial (several annexes are PDFs) — absence never means exemption. They do not sum, and some are product-specific — the collected rate above is the composed truth.
Procedures for Submissions by Certain Steel and Aluminum Producers Committing to New U.S. Steel or Aluminum… measure 9903.82.04 · Federal Register citation+25%
Notice of Determination and Action Pursuant to Section 301: Enforcement of U.S. WTO Rights in Large Civil Airc measure 9903.89.10 · Federal Register citation+25%
Notice of Determination and Action Pursuant to Section 301: Enforcement of U.S. WTO Rights in Large Civil Airc measure 9903.89.13 · Federal Register citation+25%
Notice of Determination and Action Pursuant to Section 301: Enforcement of U.S. WTO Rights in Large Civil Airc measure 9903.89.16 · Federal Register citation+25%
Notice of Determination and Action Pursuant to Section 301: Enforcement of U.S. WTO Rights in Large Civil Airc measure 9903.89.19 · Federal Register citation+25%
Notice of Determination and Action Pursuant to Section 301: Enforcement of U.S. WTO Rights in Large Civil Airc measure 9903.89.22 · Federal Register citation+25%
Notice of Determination and Action Pursuant to Section 301: Enforcement of U.S. WTO Rights in Large Civil Airc measure 9903.89.25 · Federal Register citation+25%
Notice of Determination and Action Pursuant to Section 301: Enforcement of U.S. WTO Rights in Large Civil Airc measure 9903.89.28 · Federal Register citation+25%
In print: “What United Kingdom actually pays on described in additional u.s. note 18 to this chapter and ent (HS 0406.90)” —
Trimtab US Trade Ledger (TT-010 Duty receipts), US Census imports-for-consumption records — trimtabist.com/tariff/040690/united-kingdom