Overview

• U.S. Customs and Border Protection alleges that CleanSpark owes up to $185 million in retroactive tariffs for Bitcoin mining rigs imported between April and June 2024 that it claims originated in China.
• CleanSpark disputes the claim, citing supplier documentation that the machines were built outside China and has elected not to reserve funds for any potential liabilities.
• The tariff demand surfaced just after the company reported a record Q3 2025 net income of $257.4 million and 91 percent year-over-year revenue growth, triggering a stock decline.
• IREN faces a similar $100 million dispute, highlighting broader CBP enforcement targeting crypto mining equipment origins as U.S.-China trade tensions rise.
• The escalated scrutiny has pushed mining firms and manufacturers like Bitmain to explore U.S. production to shield operations from punitive duties.