Importers of HS 3918.10 (vinyl tile) from Mexico actually paid 10.26% on the taxed portion of the value in 2026-06 — 0.04% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 5.3%. Over the window the rate on the taxed portion moved 5.33% → 10.26%, with the largest single step -30.4pp in 2026-02. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 5.3% — importers actually paid 10.26%, so the trade-war overlay added 5 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "3918.10", origin: "Mexico") · see it at trimtabist.com/tariffs
HS 3918.10. The schedule base rate is 5.3%; importers from Mexico actually paid 10.26% on the dutiable value in 2026-06 — the trade-war overlay added 5 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 5.33% (2023-07) → 10.26% (2026-06), largest single step -30.4pp in 2026-02.
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: "3918.10", origin: "Mexico") via /connect. Not customs or legal advice.