Importers of HS 8457.10 (machining centers) from Korea, South actually paid 14.99% on the taxed portion of the value in 2026-06 — 14.99% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 4.2%. Over the window the rate on the taxed portion moved 4.2% → 14.99%, with the largest single step +5.8pp in 2025-04. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 4.2% — importers actually paid 14.99%, so the trade-war overlay added 10.8 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8457.10", origin: "Korea, South") · see it at trimtabist.com/tariffs
HS 8457.10. The schedule base rate is 4.2%; importers from South Korea actually paid 14.99% on the dutiable value in 2026-06 — the trade-war overlay added 10.8 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 4.2% (2023-07) → 14.99% (2026-06), largest single step +5.8pp in 2025-04.
All goods from South Korea · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "8457.10", origin: "South Korea") via /connect. Not customs or legal advice.