Importers of HS 9013.10 (not designed for use with infrared light) from Japan actually paid 16.62% on the taxed portion of the value in 2026-06 — 16.33% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 14.9%. Over the window the rate on the taxed portion moved 7.59% → 16.62%, with the largest single step +6.3pp in 2025-05. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 14.9% — importers actually paid 16.62%, so the trade-war overlay added 1.7 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "9013.10", origin: "Japan") · see it at trimtabist.com/tariffs
HS 9013.10. The schedule base rate is 14.9%; importers from Japan actually paid 16.62% on the dutiable value in 2026-06 — the trade-war overlay added 1.7 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 7.59% (2023-07) → 16.62% (2026-06), largest single step +6.3pp in 2025-05.
Japan's lower duty (16.33% vs 32.13%) lets it price up to 13.6% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $89.33/kg vs $232.1/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 · reproduce: tariff_story(hs: "9013.10", origin: "Japan") via /connect. Not customs or legal advice.