What formula does TariffScope use?

For listed rows: unit_cost × 50% × annual_volume. That is extra Section 338 only. Probable (keyword) rows are kept out of the headline total.

Does that include ordinary HTSUS or MFN duty?

No. Ordinary rates are shown as text from HTSUS 2026 Rev. 16 and CBSA T2026. They are not in the dollar figure.

How much will Canada tariffs cost my business?

If a SKU is on the annex and origin is Canada, the extra US duty is half the unit cost, times how many you bring in this year. If it is not on the annex, this extra is zero.

Headline math for a listed line: unit_cost × 50% × annual_volume. Example: a Canadian-origin whisky you cost at $22, 8,000 units a year, HTS 2208.30.60 on the alcohol annex → $88,000 extra Section 338. Ordinary HTSUS on that line is Free, so the extra is the story — until something else stacks (301, AD/CVD, 232). We do not compute the full landed-cost stack.

A catalog total that includes keyword-only rows would overstate risk. TariffScope rolls listed rows into the headline and keeps probable out. That is why cheddar without 0406.xx.xx can look scary and still be $0 listed extra.

Canada inbound from the US: ordinary T2026 UST/MFN can show now. The extra retaliatory percentage is pending the published HS list. We will not guess it. What is on the US list.

Upload your file on the scanner (25 SKUs free) to replace the 14-SKU example output.