Importers of HS 9030.90 (other) from Korea, South actually paid 10% on the taxed portion of the value in 2026-06 — 9.49% 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% → 10%, with the largest single step -5.3pp in 2025-12. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 10%, so the trade-war overlay added 10 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "9030.90", origin: "Korea, South") · see it at trimtabist.com/tariffs
HS 9030.90. The schedule base rate is Free; importers from South Korea actually paid 10% on the dutiable value in 2026-06 — the trade-war overlay added 10 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 10% (2026-06), largest single step -5.3pp in 2025-12.
Korea, South's lower duty (9.49% vs 32.89%) lets it price up to 21.4% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $20.36/kg vs $35.06/kg (duty in, freight out).
All goods from South Korea · the whole tariff ledger · reproduce: tariff_story(hs: "9030.90", origin: "South Korea") via /connect. Not customs or legal advice.