If a U.S. traveler carries more than $10,000 in currency or monetary instruments into or out of the country, they must:
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A
File a FinCEN 105 report with U.S. Customs and Border Protection
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B
Obtain prior written approval from the IRS
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C
Declare it only if it is foreign currency, not U.S. dollars
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D
Pay a 10% duty on the amount exceeding $10,000