Last Updated: 10/04/2025
This article aims to provide the latest information on the updates made to the SimplyDuty system to accommodate the recent changes to US tariffs.
Since early March there have been multiple updates to US tariffs with some only being proposals, whilst others were implemented and then soon reversed or amended.
On April 2, 2025, Trump introduced a 10% baseline tariff on all U.S. imports globally with some rates as high as 50% on top of current rates.
System Updates
API Users:
We have updated the system with all these additional tariffs via the TempTariff object in the API calls for those using the POST method.
As of 10/04/24 this function is now defaulted to ‘on’ (true) so there is no requirement to include it in your call but you can include it if you wish to switch off these additional tariffs. Just include “TempTariff”: false,
The online calculator has been updated with the same change. There is no option to switch off these additional tariffs via the online calculator
These latest import tariffs are considered to be on top of any previous tariffs. This means it will not be unreasonable to see 125%+ from China into US on some goods calculations. There are still many unknows as most of these changes are being released via the media with little to no official documentation updates.
Update 10/04/25: The ‘rest of world’ base rate has been updated again and should apply during the ’90 Day Pause’ issued by the US Government.
China
“China has also announced a 34% tariff on all U.S. imports, effective April 10, 2025, matching the U.S.’s latest increase. This affects roughly $20 billion in U.S. exports, a smaller volume compared to U.S. tariffs due to the trade imbalance (U.S. imports from China vastly exceed exports). China also introduced non-tariff measures, including export controls on seven rare earth minerals critical for high-tech industries (e.g., samarium, gadolinium, dysprosium), and blacklisted 11 U.S. companies, accusing them of military ties with Taiwan. Additionally, China suspended some U.S. agricultural import qualifications and launched trade investigations into American medical imaging equipment.”
Update 9/04/25: The US to CN reciprocal tariffs have been added at the latest increased rate.
Canada & Mexico
For Mexico and Canada we have not made any changes at this time but can add in any flat rates at short notice.
“The U.S., under President Donald Trump, implemented a 25% tariff on all imports from Canada starting March 4, 2025, with a reduced 10% tariff applied to Canadian energy products. This action was part of a broader policy targeting Canada, Mexico, and China, justified by the Trump administration as a response to illegal immigration and the flow of fentanyl across borders. However, exemptions were later introduced: on March 6, 2025, Trump signed executive orders delaying tariffs on goods compliant with the United States-Mexico-Canada Agreement (USMCA) for a month, and on April 2, 2025, the White House announced these exemptions would remain in place indefinitely. This means roughly 38% of Canadian imports to the U.S. avoid the 25% tariff if they meet USMCA rules of origin, though non-USMCA-compliant goods, including some steel, aluminum, and energy products, remain subject to tariffs.”
As soon as we have HS Code level data from an official US customs data provider (or the WTO) we will be able to implement these variations from the USMCA rates. The same applies with regards to Mexico.
Also, due to this lack of HS Code level data, we also have NOT included the blanket 25% tariffs on ‘automobiles’ at this time.