Importers of HS 8431.49 (of machinery of heading 8426) from Korea, South actually paid 19.33% on the taxed portion of the value in 2026-06 — 18.49% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is Free. Over the window the rate on the taxed portion moved null% → 19.33%, with the largest single step +21.7pp in 2025-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 19.33%, so the trade-war overlay added 19.3 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8431.49", origin: "Korea, South") · see it at trimtabist.com/tariffs
HS 8431.49. The schedule base rate is Free; importers from South Korea actually paid 19.33% on the dutiable value in 2026-06 — the trade-war overlay added 19.3 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 19.33% (2026-06), largest single step +21.7pp in 2025-03.
Korea, South's lower duty (18.49% vs 46.42%) lets it price up to 23.6% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, Korea, South actually lands cheaper — $3.63/kg vs $4.26/kg (duty in, freight out).
All goods from South Korea · the whole tariff ledger · 19 CBP rulings cite this code · reproduce: tariff_story(hs: "8431.49", origin: "South Korea") via /connect. Not customs or legal advice.