Under an upcoming tax, set to take effect on Jan. 1, 2027, losses in crypto assets from previous years will not be carried forward and deducted from later gains.

Controversy is growing over whether the tax system treats crypto and stocks fairly and whether authorities have enough information on overseas transactions, just over two months before a new tax law is set to take effect.

Under the upcoming rule, losses in crypto assets from previous years will not be carried forward and deducted from later gains.

For example, if an investor loses 100 million won ($74,900) on crypto in one year…