Importers of HS 8471.80 (control or adapter units) from Vietnam actually paid 24.95% on the taxed portion of the value in 2026-06 — 0.17% 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% → 24.95%, with the largest single step +10.9pp in 2025-05. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 24.95%, so the trade-war overlay added 24.9 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8471.80", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 8471.80. The schedule base rate is Free; importers from Vietnam actually paid 24.95% on the dutiable value in 2026-06 — the trade-war overlay added 24.9 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 24.95% (2026-06), largest single step +10.9pp in 2025-05.
Vietnam's lower duty (0.17% vs 26.5%) lets it price up to 26.3% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $67.06/kg vs $67.37/kg (duty in, freight out).
All goods from Vietnam · the whole tariff ledger · 2 CBP rulings cite this code · reproduce: tariff_story(hs: "8471.80", origin: "Vietnam") via /connect. Not customs or legal advice.