Importers of HS 8428.90 (other machinery) from Mexico actually paid 15.02% on the taxed portion of the value in 2026-06 — 11.29% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is Free. Over the window the rate on the taxed portion moved null% → 15.02%, with the largest single step -30.7pp in 2026-04. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 15.02%, so the trade-war overlay added 15 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8428.90", origin: "Mexico") · see it at trimtabist.com/tariffs
HS 8428.90. The schedule base rate is Free; importers from Mexico actually paid 15.02% on the dutiable value in 2026-06 — the trade-war overlay added 15 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 15.02% (2026-06), largest single step -30.7pp in 2026-04.
5 Chapter-99 measures name Mexico; 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 Mexico · the whole tariff ledger · 7 CBP rulings cite this code · reproduce: tariff_story(hs: "8428.90", origin: "Mexico") via /connect. Not customs or legal advice.