Importers of HS 4009.12 (with fittings) from Taiwan actually paid 12.5% on the taxed portion of the value in 2026-06 — 12.5% 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% → 12.5%, with the largest single step +8.2pp in 2025-08. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 2.5% — importers actually paid 12.5%, so the trade-war overlay added 10 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "4009.12", origin: "Taiwan") · see it at trimtabist.com/tariffs
HS 4009.12. The schedule base rate is 2.5%; importers from Taiwan actually paid 12.5% 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 2.5% (2023-07) → 12.5% (2026-06), largest single step +8.2pp in 2025-08.
Taiwan's lower duty (12.5% vs 19.54%) lets it price up to 6.3% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $2.46/kg vs $34.54/kg (duty in, freight out).
All goods from Taiwan · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "4009.12", origin: "Taiwan") via /connect. Not customs or legal advice.