Importers of HS 2905.13 (butan-1-ol (n-butyl alcohol)) from Taiwan actually paid 15.5% on the taxed portion of the value in 2026-06 — 15.5% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 5.5%. Over the window the rate on the taxed portion moved null% → 15.5%, with the largest single step +25.5pp in 2025-12. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 5.5% — importers actually paid 15.5%, so the trade-war overlay added 10 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "2905.13", origin: "Taiwan") · see it at trimtabist.com/tariffs
HS 2905.13. The schedule base rate is 5.5%; importers from Taiwan actually paid 15.5% 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 % (2023-07) → 15.5% (2026-06), largest single step +25.5pp in 2025-12.
All goods from Taiwan · the whole tariff ledger · reproduce: tariff_story(hs: "2905.13", origin: "Taiwan") via /connect. Not customs or legal advice.