Importers of HS 3812.39 (mixtures of n,n'-diaryl-p-phenylenediamines) from Indonesia actually paid 15% on the taxed portion of the value in 2026-06 — 15% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 6.5%. Over the window the rate on the taxed portion moved 5% → 15%, with the largest single step -8pp in 2026-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 6.5% — importers actually paid 15%, so the trade-war overlay added 8.5 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "3812.39", origin: "Indonesia") · see it at trimtabist.com/tariffs
HS 3812.39. The schedule base rate is 6.5%; importers from Indonesia actually paid 15% on the dutiable value in 2026-06 — the trade-war overlay added 8.5 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 5% (2023-07) → 15% (2026-06), largest single step -8pp in 2026-03.
Indonesia's lower duty (15% vs 39.72%) lets it price up to 21.5% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $2.67/kg vs $15.27/kg (duty in, freight out).
All goods from Indonesia · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "3812.39", origin: "Indonesia") via /connect. Not customs or legal advice.