Importers of HS 7410.11 (of refined copper) from Japan actually paid 26.57% on the taxed portion of the value in 2026-06 — 26.57% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 1%. Over the window the rate on the taxed portion moved 1% → 26.57%, with the largest single step +46pp in 2025-08. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 1% — importers actually paid 26.57%, so the trade-war overlay added 25.6 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "7410.11", origin: "Japan") · see it at trimtabist.com/tariffs
HS 7410.11. The schedule base rate is 1%; importers from Japan actually paid 26.57% on the dutiable value in 2026-06 — the trade-war overlay added 25.6 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 1% (2023-07) → 26.57% (2026-06), largest single step +46pp in 2025-08.
Japan's lower duty (26.57% vs 76.12%) lets it price up to 39.1% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $20.06/kg vs $25.47/kg (duty in, freight out).
12 Chapter-99 measures name Japan; 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.
All goods from Japan · the whole tariff ledger · reproduce: tariff_story(hs: "7410.11", origin: "Japan") via /connect. Not customs or legal advice.