Articles
Long-form guides on how U.S. tariffs actually stack, with worked examples and citations back to the official source.
-
July 22, 2026
Canada's 50% Section 338 tariff: what importers should do before August 19
An additional 50% duty on certain Canadian goods takes effect on August 19, 2026, under a statute that has been dormant since the 1930s. USMCA origination will not exempt you. Here is who is exposed, who is carved out, and what to check on open purchase orders now.
-
May 28, 2026
How HTS tariff stacking actually works (with worked examples)
A duty rate is rarely one number. Most U.S. imports pay several duties at once, and some duties suppress others by law. Here is the order, the carve-outs, and three worked examples you can verify against the official source.