Importers of HS 8708.21 (safety seat belts) from Korea, South actually paid 14.44% on the taxed portion of the value in 2026-06 — 12.44% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 2.5%. Over the window the rate on the taxed portion moved 2.5% → 14.44%, with the largest single step +17.7pp in 2025-05. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 2.5% — importers actually paid 14.44%, so the trade-war overlay added 11.9 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8708.21", origin: "Korea, South") · see it at trimtabist.com/tariffs
HS 8708.21. The schedule base rate is 2.5%; importers from South Korea actually paid 14.44% on the dutiable value in 2026-06 — the trade-war overlay added 11.9 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 2.5% (2023-07) → 14.44% (2026-06), largest single step +17.7pp in 2025-05.
Korea, South's lower duty (12.44% vs 46.52%) lets it price up to 30.3% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $11.12/kg vs $11.32/kg (duty in, freight out).
15 Chapter-99 measures name Korea, South; 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 South Korea · the whole tariff ledger · reproduce: tariff_story(hs: "8708.21", origin: "South Korea") via /connect. Not customs or legal advice.