Importers of HS 8418.99 (other) from Mexico actually paid 22.65% on the taxed portion of the value in 2026-06 — 9.56% 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% → 22.65%, with the largest single step +27.9pp in 2025-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 22.65%, so the trade-war overlay added 22.6 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8418.99", origin: "Mexico") · see it at trimtabist.com/tariffs
HS 8418.99. The schedule base rate is Free; importers from Mexico actually paid 22.65% on the dutiable value in 2026-06 — the trade-war overlay added 22.6 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 22.65% (2026-06), largest single step +27.9pp in 2025-03.
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 · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "8418.99", origin: "Mexico") via /connect. Not customs or legal advice.