Importers of HS 3923.30 (carboys, bottles, flasks and similar articles) from Vietnam actually paid 12.84% on the taxed portion of the value in 2026-06 — 12.84% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 3%. Over the window the rate on the taxed portion moved 3% → 12.84%, with the largest single step +7.3pp in 2025-05. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 3% — importers actually paid 12.84%, so the trade-war overlay added 9.8 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "3923.30", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 3923.30. The schedule base rate is 3%; importers from Vietnam actually paid 12.84% on the dutiable value in 2026-06 — the trade-war overlay added 9.8 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 3% (2023-07) → 12.84% (2026-06), largest single step +7.3pp in 2025-05.
Vietnam's lower duty (12.84% vs 37.53%) lets it price up to 21.9% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, Vietnam actually lands cheaper — $2.85/kg vs $7/kg (duty in, freight out).
All goods from Vietnam · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "3923.30", origin: "Vietnam") via /connect. Not customs or legal advice.