The tariffs announced as part of the "Liberation Day" tariffs by President Trump in 2025 started with a baseline 10% tariff on most imports beginning April 5, 2025. The higher country-specific tariffs were originally scheduled to start on April 9, 2025, but were paused for negotiations. Many of the higher "reciprocal" tariffs resumed on August 7, 2025, after several delays. Tariffs on Canadian goods increased starting August 1, 2025. Additional tariff hikes on certain countries and goods have taken effect in August 2025, with some new tariffs beginning as late as August 18, 2025.
So, in summary:
- Baseline tariffs: started April 5, 2025
- Higher country-specific tariffs: mostly started August 7, 2025
- Canadian tariff increases: started August 1, 2025
- Some additional tariffs effective August 18, 2025
This timeline reflects a phased tariff implementation throughout 2025.