Importers of HS 9405.11 (of brass) from Vietnam actually paid 15.95% on the taxed portion of the value in 2026-06 — 15.64% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 3.9%. Over the window the rate on the taxed portion moved 6.13% → 15.95%, with the largest single step -7.3pp in 2026-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 3.9% — importers actually paid 15.95%, so the trade-war overlay added 12 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "9405.11", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 9405.11. The schedule base rate is 3.9%; importers from Vietnam actually paid 15.95% on the dutiable value in 2026-06 — the trade-war overlay added 12 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 6.13% (2023-07) → 15.95% (2026-06), largest single step -7.3pp in 2026-03.
Vietnam's lower duty (15.64% vs 40.57%) lets it price up to 21.6% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, Vietnam actually lands cheaper — $8.11/kg vs $10.15/kg (duty in, freight out).
All goods from Vietnam · the whole tariff ledger · reproduce: tariff_story(hs: "9405.11", origin: "Vietnam") via /connect. Not customs or legal advice.