There is no limit to the total amount of means of payment that may be brought into or taken out of Japan. However, if you transport means of payment exceeding JP 1,000,000 yen or its equivalent or precious metal (more than 90% purity’s gold only) exceeding 1kg of total weight, you are required to report this to Japanese Customs.
For more information, please contact the Japanese Customs Service:
Tokyo Customs HQ
5-30 Konan 5-chome
Minato-ku, Tokyo 108
Phone: 03-3742-7001 (From the U.S., please dial as 011-81-3-3742-7001)