Importers of HS 8419.89 (other) from Taiwan actually paid 14.2% on the taxed portion of the value in 2026-06 — 14.2% 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% → 14.2%, with the largest single step +7.8pp in 2026-01. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 4.2% — importers actually paid 14.2%, so the trade-war overlay added 10 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8419.89", origin: "Taiwan") · see it at trimtabist.com/tariffs
HS 8419.89. The schedule base rate is 4.2%; importers from Taiwan actually paid 14.2% 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 4.2% (2023-07) → 14.2% (2026-06), largest single step +7.8pp in 2026-01.
Taiwan's lower duty (14.2% vs 38.05%) lets it price up to 20.9% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $15.75/kg vs $60.55/kg (duty in, freight out).
All goods from Taiwan · the whole tariff ledger · 10 CBP rulings cite this code · reproduce: tariff_story(hs: "8419.89", origin: "Taiwan") via /connect. Not customs or legal advice.