Importers of HS 1518.00 (of linseed or flaxseed oil) from Vietnam actually paid 18% on the taxed portion of the value in 2026-06 — 18% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 6.3¢/kg. Over the window the rate on the taxed portion moved 8% → 18%, with the largest single step -28pp in 2025-10. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. Collected 18% against an HTS base of 6.3¢/kg. Reproduce exactly: tariff_story(hs: "1518.00", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 1518.00. The schedule base rate is 6.3¢/kg; importers from Vietnam actually paid 18% on the dutiable value in 2026-06. Measured, not modelled.
Over the window the collected rate moved 8% (2024-01) → 18% (2026-06), largest single step -28pp in 2025-10.
All goods from Vietnam · the whole tariff ledger · 2 CBP rulings cite this code · reproduce: tariff_story(hs: "1518.00", origin: "Vietnam") via /connect. Not customs or legal advice.