Importers of HS 4011.90 (radial) from Thailand actually paid 13.64% on the taxed portion of the value in 2026-06 — 13.64% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 4%. Over the window the rate on the taxed portion moved 3.96% → 13.64%, with the largest single step -6.4pp in 2026-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 4% — importers actually paid 13.64%, so the trade-war overlay added 9.6 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "4011.90", origin: "Thailand") · see it at trimtabist.com/tariffs
HS 4011.90. The schedule base rate is 4%; importers from Thailand actually paid 13.64% on the dutiable value in 2026-06 — the trade-war overlay added 9.6 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 3.96% (2023-07) → 13.64% (2026-06), largest single step -6.4pp in 2026-03.
Thailand's lower duty (13.64% vs 38.44%) lets it price up to 21.8% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $2.55/kg vs $2.73/kg (duty in, freight out).
All goods from Thailand · the whole tariff ledger · 2 CBP rulings cite this code · reproduce: tariff_story(hs: "4011.90", origin: "Thailand") via /connect. Not customs or legal advice.