Importers of HS 8471.30 (portable automatic data processing machines, weighing not mo) from Japan actually paid 10.04% on the taxed portion of the value in 2026-06 — 6.46% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is Free. Over the window the rate on the taxed portion moved null% → 10.04%, with the largest single step -13.3pp in 2025-07. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 10.04%, so the trade-war overlay added 10 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8471.30", origin: "Japan") · see it at trimtabist.com/tariffs
HS 8471.30. The schedule base rate is Free; importers from Japan actually paid 10.04% on the dutiable value in 2026-06 — the trade-war overlay added 10 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 10.04% (2026-06), largest single step -13.3pp in 2025-07.
China's lower duty (0.11% vs 6.46%) lets it price up to 6.3% above Japan at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $63.55/kg vs $254.15/kg (duty in, freight out).
12 Chapter-99 measures name Japan; scope mapping is partial (several annexes are PDFs) — absence never means exemption. They do not sum, and some are product-specific — the collected rate above is the composed truth.
All goods from Japan · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "8471.30", origin: "Japan") via /connect. Not customs or legal advice.