Importers of HS 9817.00 (articles of copper) from Vietnam actually paid 10% on the taxed portion of the value in 2026-06 — 0.02% 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% → 10%, with the largest single step +16.3pp in 2025-10. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 10%, so the trade-war overlay added 10 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "9817.00", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 9817.00. The schedule base rate is Free; importers from Vietnam actually paid 10% on the dutiable value in 2026-06 — the trade-war overlay added 10 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 10% (2026-06), largest single step +16.3pp in 2025-10.
China's lower duty (0% vs 0.02%) lets it price up to 0% above Vietnam at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $3.26/kg vs $6.47/kg (duty in, freight out).
All goods from Vietnam · the whole tariff ledger · 129 CBP rulings cite this code · reproduce: tariff_story(hs: "9817.00", origin: "Vietnam") via /connect. Not customs or legal advice.