Importers of HS 8424.89 (other) from Korea, South actually paid 13.09% on the taxed portion of the value in 2026-06 — 13.06% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 1.8%. Over the window the rate on the taxed portion moved 1.8% → 13.09%, with the largest single step -14.7pp in 2025-11. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 1.8% — importers actually paid 13.09%, so the trade-war overlay added 11.3 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8424.89", origin: "Korea, South") · see it at trimtabist.com/tariffs
HS 8424.89. The schedule base rate is 1.8%; importers from South Korea actually paid 13.09% on the dutiable value in 2026-06 — the trade-war overlay added 11.3 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 1.8% (2023-07) → 13.09% (2026-06), largest single step -14.7pp in 2025-11.
Korea, South's lower duty (13.06% vs 26.95%) lets it price up to 12.3% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $7.16/kg vs $18.01/kg (duty in, freight out).
All goods from South Korea · the whole tariff ledger · 13 CBP rulings cite this code · reproduce: tariff_story(hs: "8424.89", origin: "South Korea") via /connect. Not customs or legal advice.