If you are the US importer of record for Canadian goods, the new 50% tariffs are your invoice. Here is what the measures are, what they cover, and the planning questions trade counsel are flagging.
The basics
Effective 12:01 a.m. ET on August 22, 2026, the US imposed 50% additional tariffs on approximately US$20 billion in annual imports from Canada, under three proclamations issued pursuant to Section 338 of the Tariff Act of 1930 — invoked July 20, 2026, the first use of this authority by any president. The tariffs apply even to USMCA/CUSMA-qualifying goods and carry no scheduled expiry. CBP has issued implementation guidance (CSMS #69606660), including the official HTS list — searchable on our Section 338 checker.
What is covered
Three lists: dairy products; alcoholic beverages; and a broad third list spanning electronics and telecom equipment, furniture and home goods, building materials, plastics and packaging, apparel and footwear, toys and sporting goods, machinery and manufacturing inputs, cosmetics, and certain agricultural products.
Who pays, mechanically
The importer of record pays the duty to US Customs and Border Protection at entry. How the cost is shared with Canadian suppliers is a commercial negotiation — renegotiated pricing, reduced volumes, and sourcing shifts are all in play.
What trade counsel are advising
Law-firm analyses (Wiley; White & Case; others) suggest importers promptly review whether products fall within the covered classifications, quantify duty exposure, revisit inventory and shipment timing, and monitor CBP guidance. Several firms also anticipate court challenges to the novel Section 338 authority at the US Court of International Trade — particularly relevant after the Supreme Court struck down the IEEPA tariff program in February 2026. If Section 338 were later invalidated, duties paid could become the subject of refund claims, which makes clean entry records valuable from day one.
Sources: CBP CSMS #69606660 and its official HTS list; Holland & Knight and C.H. Robinson client alerts; the July 20, 2026 presidential proclamations.
TariffCleared is an independent publisher. Nothing on this site is legal, customs, or financial advice. Confirm against the linked primary sources or consult a licensed professional.