Importers of HS 8207.30 (suitable for cutting metal, and parts thereof) from Japan actually paid 11.61% on the taxed portion of the value in 2026-06 — 10.8% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 5.7%. Over the window the rate on the taxed portion moved 3.44% → 11.61%, with the largest single step +4.8pp in 2025-09. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 5.7% — importers actually paid 11.61%, so the trade-war overlay added 5.9 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8207.30", origin: "Japan") · see it at trimtabist.com/tariffs
HS 8207.30. The schedule base rate is 5.7%; importers from Japan actually paid 11.61% on the dutiable value in 2026-06 — the trade-war overlay added 5.9 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 3.44% (2023-07) → 11.61% (2026-06), largest single step +4.8pp in 2025-09.
Japan's lower duty (10.8% vs 39.34%) lets it price up to 25.8% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $6.66/kg vs $15.61/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 · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "8207.30", origin: "Japan") via /connect. Not customs or legal advice.