Importers of HS 9032.10 (thermostats) from Vietnam actually paid 11.62% on the taxed portion of the value in 2026-06 — 11.62% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 1.7%. Over the window the rate on the taxed portion moved 1.7% → 11.62%, with the largest single step -8.8pp in 2026-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 1.7% — importers actually paid 11.62%, so the trade-war overlay added 9.9 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "9032.10", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 9032.10. The schedule base rate is 1.7%; importers from Vietnam actually paid 11.62% on the dutiable value in 2026-06 — the trade-war overlay added 9.9 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 1.7% (2023-07) → 11.62% (2026-06), largest single step -8.8pp in 2026-03.
Vietnam's lower duty (11.62% vs 30.62%) lets it price up to 17% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $20.68/kg vs $83.66/kg (duty in, freight out).
All goods from Vietnam · the whole tariff ledger · 6 CBP rulings cite this code · reproduce: tariff_story(hs: "9032.10", origin: "Vietnam") via /connect. Not customs or legal advice.