
South Korea will tax crypto gains from self-custodied wallets and offshore exchanges starting 2027, with a 2.5M won deduction and 20% base rate.
South Korea confirmed its crypto tax will apply to income generated through private wallets and foreign exchanges starting Jan. 1, 2027. The Ministry of Economy and Finance and the National Tax Service said the location or storage method does not matter. It will still be liable for taxes.
Under the proposed system, digital-asset income will be classified as other income with an annual deduction of 2.5 million won. Any amount above that threshold gets a 20% national tax plus a local surcharge that brings the total to 22%. South Korean residents must declare their tax obligations related to cryptocurrency transfers and lending, the NTS said.
The NTS acknowledged that monitoring self-custodied wallets is difficult because individuals can generate multiple addresses without intermediaries. To solve that, the agency plans to develop transaction-tracking and analysis systems. The government is also working on ways to deal with self-custodied cryptocurrencies during criminal investigations.
For foreign exchanges, South Korea intends to use the Offshore Financial Account Disclosure system and the OECD’s Crypto-Asset Reporting Framework to track movements. The country has also imposed registration requirements for cross-border transfers of cryptocurrencies.
Government figures show roughly $60 billion worth of cryptocurrency was transferred from local exchanges during the latter part of 2025. Political opposition remains. The People Power Party is demanding the tax be abolished or delayed. A related petition has passed 50,000 signatures. Preparations for 2027 are proceeding despite the objections.
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