Japan's tourism boom is becoming a headache for its credit card companies

TOKYO -- As international visitors flock to Japan, their shopping and dining have put such a strain on credit card companies here that some are considering charging higher fees for foreign-issued cards.

When a foreign-issued credit card is used in Japan, the Japanese card company that processes transactions for the merchant must pay fees to both the overseas issuer and the international brand holder, such as Visa or MasterCard.