South Korea’s tax authority, the National Tax Service (NTS), has established a strict legal precedent regarding digital assets held on bankrupt foreign platforms. Contrary to the hopes of many investors, the collapse of an exchange does not exempt taxpayers from their reporting obligations. From now on, any resident holding accounts on platforms in liquidation is required to declare them, regardless of whether the funds are frozen, inaccessible, or tied up in complex legal proceedings.
This decision follows the review of a specific case involving a resident whose cryptocurrency had been locked on a foreign platform for several years. The tax authorities ruled that tax liability is tied to the administrative existence of the account, not the holder's actual ability to access their funds. This interpretation is based on the Law for the Coordination of International Tax Affairs, which mandates reporting once the cumulative balance of foreign accounts exceeds the threshold of 500 million won — approximately 325,000 euros — at any point during the fiscal year.
The implications of this measure are significant, given the volume of digital assets now monitored by authorities. For the current year, no less than 10.5 trillion won in crypto assets were reported, a sum driven primarily by individual investors whose filings have increased by 5.4%. This drive for total transparency is part of a broader strategy from Seoul, which has been intensifying initiatives since the beginning of 2026 to strengthen oversight of the crypto sector, including the exclusion of non-certified foreign platforms and increased regulation of cross-border flows.
Beyond the purely administrative aspect, this decision marks a further step in the tightening of South Korean regulation. While many users of failed platforms like FTX are still awaiting partial repayment of their claims, the tax authorities are enforcing a level of rigor that borders on a financial paradox. By maintaining this pressure, South Korea is sending a clear message to investors: the bankruptcy of an intermediary is by no means a tax gray area. The state remains vigilant regarding all digital holdings, regardless of the viability of the platforms hosting them.