Importers of HS 5402.20 (single yarn) from Vietnam actually paid 18.7% on the taxed portion of the value in 2026-06 — 18.7% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 8.8%. Over the window the rate on the taxed portion moved 8.8% → 18.7%, with the largest single step -6.9pp in 2026-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 8.8% — importers actually paid 18.7%, so the trade-war overlay added 9.9 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "5402.20", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 5402.20. The schedule base rate is 8.8%; importers from Vietnam actually paid 18.7% on the dutiable value in 2026-06 — the trade-war overlay added 9.9 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 8.8% (2023-07) → 18.7% (2026-06), largest single step -6.9pp in 2026-03.
Vietnam's lower duty (18.7% vs 27.91%) lets it price up to 7.8% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $1.53/kg vs $1.58/kg (duty in, freight out).
All goods from Vietnam · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "5402.20", origin: "Vietnam") via /connect. Not customs or legal advice.