The Korea National Tax service will start imposing a VAT (value-added tax) on virtual asset transactions. Sellers who do between 6 and 12 millions dollars in Korean currency (the Won) per half year will have the VAT applied automatically the transaction's midde-man. Sellers that happen to more than 12 million won/half year will need a business license in order to pay the tax by themselves.

This allows the NTS to track all the transactions of taxed virtual items. Korean publishers haven't made a peep since this law has been passed, but it creates a global milestone for those that succeed it.
South Korea Begins Taxing Virtual Assets [Game|Life]