Developer Mori Trust has estimated foreign visitors to Japan will spend around 10 trillion yen ($67 billion) this year. If credit cards account for about half this total, that could amount to an overall loss of around 35 billion yen for Japanese card companies, by some estimates. Three companies surveyed said they intend to impose new fees on international travelers, rather than the merchants in their networks. When asked how high such fees should run, six said that the 1%-to-3% range would be appropriate. The companies envision this being paid on top of the 1.9% charge already imposed on merchants. There are hurdles to actually taking such a step, including the cost of upgrading payment terminals and networks to handle additional fees. Two companies cited such development costs as the biggest challenge, while three others see gaining the understanding of foreign visitors as a larger obstacle. Presenting another barrier are the contracts between card companies and international card brands, which mostly do not allow for charges beyond the normal price of a product. This is generally interpreted to mean that it would be difficult for card issuers or the merchants in their networks to impose fees at their own discretion.