Importers of HS 9022.90 (radiation generator units) from Canada actually paid 10.58% on the taxed portion of the value in 2026-06 — 1.25% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 0.8%. Over the window the rate on the taxed portion moved 1% → 10.58%, with the largest single step -22.7pp in 2026-03. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 0.8% — importers actually paid 10.58%, so the trade-war overlay added 9.8 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "9022.90", origin: "Canada") · see it at trimtabist.com/tariffs
HS 9022.90. The schedule base rate is 0.8%; importers from Canada actually paid 10.58% on the dutiable value in 2026-06 — the trade-war overlay added 9.8 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 1% (2023-07) → 10.58% (2026-06), largest single step -22.7pp in 2026-03.
Canada's lower duty (1.25% vs 33.28%) lets it price up to 31.6% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $18.54/kg vs $37.28/kg (duty in, freight out).
7 Chapter-99 measures name Canada; 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 Canada · the whole tariff ledger · reproduce: tariff_story(hs: "9022.90", origin: "Canada") via /connect. Not customs or legal advice.