Japan’s top financial official is cautious about the idea of his nation changing how it taxes gains from cryptocurrencies.

During a meeting with the budget committee of the Upper House on June 25, Senator Kenji Fukimaki asked whether Japan’s tax policy on cryptocurrency profits could be changed from its current “miscellaneous income” classification to “separate declared taxation,” Reuters reported. Taro Aso, the deputy prime minister and minister of finance, said he was cautious about making such a change.

Aso explained that, in his view, it was “doubtful” that the general public would understand such a change. He cited the “international nature” of cryptocurrency as one…