Importers of HS 8471.50 (processing units other than those of subheading 8471.41 or 8) from Vietnam actually paid 17.87% on the taxed portion of the value in 2026-06 — 0.03% 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% → 17.87%, with the largest single step +14.5pp in 2026-05. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 17.87%, so the trade-war overlay added 17.9 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8471.50", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 8471.50. The schedule base rate is Free; importers from Vietnam actually paid 17.87% on the dutiable value in 2026-06 — the trade-war overlay added 17.9 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 17.87% (2026-06), largest single step +14.5pp in 2026-05.
Vietnam's lower duty (0.03% vs 24.64%) lets it price up to 24.6% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, Vietnam actually lands cheaper — $104.1/kg vs $121.52/kg (duty in, freight out).
All goods from Vietnam · the whole tariff ledger · 6 CBP rulings cite this code · reproduce: tariff_story(hs: "8471.50", origin: "Vietnam") via /connect. Not customs or legal advice.