USA: How to Prioritise U.S. Tariffs ("Tariff Stacking")
- Arne Mielken
- May 26
- 4 min read
Master overlapping tariffs with this new CBP rule—don't pay more than you should!

When it comes to U.S. Customs Compliance, staying up to date on tariff policy is essential.
In this blog we bring you updated guidance on how to prioritise multiple U.S. tariffs on the same article—helping you avoid overpaying and confidently navigate import regulations.
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Key Questions Covered in This Blog
What is Executive Order 14289 and why is it important for U.S. importers?
How should overlapping tariffs be prioritised under EO 14289?
What tariffs are affected by this new guidance?
How do USMCA exemptions interact with these tariffs?
What should you do to claim refunds for entries made after March 4, 2025?
Abbreviations Used In This Blog
EO – Executive Order
CBP – Customs and Border Protection
IEEPA – International Emergency Economic Powers Act
USMCA – United States-Mexico-Canada Agreement
HTSUS – Harmonized Tariff Schedule of the United States
CSMS – Cargo Systems Messaging Service
"Smart tariff stacking could be the difference between a compliant entry and thousands in overpaid duties. Know the order, know your rights."Arne Mielken, Managing Director, Customs Manager
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What is Executive Order 14289 and why is it important for U.S. importers?
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