Importers of HS 8504.34 (having a power handling capacity exceeding 500 kva) from Korea, South actually paid 4.7% on the taxed portion of the value in 2026-06 — 4.7% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 1.6%. Over the window the rate on the taxed portion moved 1.6% → 4.7%, with the largest single step -13.2pp in 2026-02. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 1.6% — importers actually paid 4.7%, so the trade-war overlay added 3.1 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8504.34", origin: "Korea, South") · see it at trimtabist.com/tariffs
HS 8504.34. The schedule base rate is 1.6%; importers from South Korea actually paid 4.7% on the dutiable value in 2026-06 — the trade-war overlay added 3.1 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 1.6% (2023-07) → 4.7% (2026-06), largest single step -13.2pp in 2026-02.
Korea, South's lower duty (4.7% vs 36.88%) lets it price up to 30.7% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $4.41/kg vs $25.05/kg (duty in, freight out).
2 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: "8504.34", origin: "South Korea") via /connect. Not customs or legal advice.