US companies that export to Canada – steel producers, dairy operations, appliance manufacturers, agricultural equipment makers, electronics firms, and paper producers – are now looking at a confirmed 50% tariff landing on their Canadian sales starting September 8. For any US exporter that has extended credit terms to Canadian buyers, the tariff changes the buyer’s economics immediately. A Canadian importer that contracted to purchase US steel at pre-tariff prices now faces a 50% landed cost increase it did not price in. The credit risk on those receivables has moved. Trade credit insurance for US exporters selling into Canada is the most direct policy line affected. …The second direction is less immediately visible but affects a wider range of American businesses. US manufacturers that source Canadian lumber, metals, cement, dairy ingredients or paper as production inputs are now paying 50% more for those inputs effective immediately, with no exemption for USMCA-compliant goods under the Section 338 mechanism used to impose these tariffs.