Importers of HS 8503.00 (other) from Mexico actually paid 22.49% on the taxed portion of the value in 2026-06 — 9.8% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 3%. Over the window the rate on the taxed portion moved 3.02% → 22.49%, with the largest single step +24.4pp in 2025-06. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 3% — importers actually paid 22.49%, so the trade-war overlay added 19.5 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8503.00", origin: "Mexico") · see it at trimtabist.com/tariffs
HS 8503.00. The schedule base rate is 3%; importers from Mexico actually paid 22.49% on the dutiable value in 2026-06 — the trade-war overlay added 19.5 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 3.02% (2023-07) → 22.49% (2026-06), largest single step +24.4pp in 2025-06.
7 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 · 10 CBP rulings cite this code · reproduce: tariff_story(hs: "8503.00", origin: "Mexico") via /connect. Not customs or legal advice.