South Korea is one of the world’s most active cryptocurrency markets, generating an estimated $823.4 million in crypto revenue in 2025. 

The country’s crypto market is overseen by the National Tax Service (NTS), which works alongside the Financial Services Commission (FSC) and the Korea Financial Intelligence Unit (KoFIU). Despite the scale of domestic crypto activity and significant regulatory development in recent years, the implementation of a formal crypto tax regime has been repeatedly deferred. 

As of 2026, a comprehensive crypto-specific capital gains tax has not yet taken effect, with the government most recently pushing the implementation date to 2027.

Capital Gains Tax Rules

South Korea’s capital gains tax framework for crypto will formally take effect in 2027 under legislation passed in December 2024. 

Prior to this date, gains from the trading of cryptocurrency by private investors are not subject to CGT under domestic law. The incoming regime treats cryptocurrency as a distinct asset category (intangible assets) and will apply a 20% tax rate on profits, plus a 2% local income tax, giving a combined effective rate of 22%. 

The annual exemption threshold of 50 million KRW means that investors whose total crypto gains in a year do not exceed this figure will have no CGT liability.

How CGT will be calculated

Under the 2027 framework, the gain on any disposal of a crypto asset will be calculated as the transfer value minus the acquisition cost. 

Only the purchase price of the crypto asset itself is deductible as an acquisition cost; transaction fees and other expenses cannot be separately claimed. Losses from crypto transactions cannot be offset against other categories of income (such as employment income or business income) nor carried forward in the way stock market losses can be. 

The 50 million KRW threshold operates as an annual blanket exemption, meaning total annual net gains below that figure are simply not taxable, regardless of the number of individual transactions.

Current position (pre-2027)

As of 2026, the CGT framework has not yet entered into force. 

Private investors in South Korea do not currently pay capital gains tax on profits from buying and selling cryptocurrency. However, this does not mean crypto activity is unregulated or unreported, and taxpayers should maintain accurate records in preparation for the 2027 implementation. 

Foreign individuals and corporations are subject to different rules and may be subject to withholding tax of 11% on the transfer price or 22% on net capital gains on crypto disposals even before the domestic regime takes effect.

Record keeping

Investors must maintain transaction logs covering all crypto acquisitions and disposals. Required records include the date, type, and amount of each transaction, the acquisition price and transfer value, and the cost basis for each asset. 

These records must be retained for at least five years. The NTS has the authority to request records and uses advanced blockchain analytics tools to verify compliance.

Income Tax Rules

While CGT on crypto trading gains is deferred until 2027, income from crypto activities is currently subject to income tax in South Korea. 

Earnings from mining, staking, and airdrops are classified as “other income” and taxed at individual income tax rates, which range from 6.6% to 49.5% inclusive of local taxes depending on the total level of income. Crypto received as salary or payment for services is treated as employment income and taxed at the recipient’s marginal income tax rate.

Income from DeFi lending, yield farming, and similar crypto-based financial activities is similarly classified as “other income” and included in the taxpayer’s annual income tax assessment. The value of income received in the form of cryptocurrency is determined by the market value of the tokens at the time of receipt, converted to Korean won. Where crypto is used as payment for goods or services, the payer must account for any taxable gain on the crypto used, and the value transferred is the market rate at the time.

Income from crypto activities must be reported in the annual income tax return filed by 31 May of the year following the relevant tax year. 

Taxpayers with crypto income from foreign exchanges or platforms are required to include those earnings in their domestic tax return; the use of offshore platforms does not remove the Korean tax obligation where the individual is resident in South Korea.

Mining and Staking Treatment

Mining

Mining income in South Korea is classified as “other income” and taxed at the time of receipt.

The taxable amount is the market value of the mined cryptocurrency in Korean won at the date of receipt. Miners are required to include this amount in their annual income tax return and pay tax at the applicable “other income” rates, which range from 6.6% to 49.5% including local taxes depending on total annual income.

As of 2026, South Korea has not issued specific guidance on the deductibility of mining-related expenses such as hardware and electricity costs against mining income, and the general rules applicable to business income deductions would guide any such claim where the mining activity is conducted as a formal business.

Once mined coins are held and later disposed of, a further taxable event will arise under the 2027 CGT framework when it takes effect. The cost basis of mined coins for the purposes of that future disposal will be the market value at which they were brought into income on the mining date. 

Under the current pre-2027 position, the disposal of mined coins does not give rise to a CGT charge, though the income tax liability on receipt remains.

Staking

Staking rewards are treated as “other income” in South Korea and are taxed at fair market value in won at the time of receipt. 

This applies both to validation-based staking by those operating nodes and to delegated staking through exchanges or pools. The income is included in the annual income tax return and taxed at the applicable marginal rates. 

As of 2026, no specific guidance has been issued by the NTS distinguishing between different forms of staking for tax purposes, and the general other income classification applies across the board.

When staking rewards are subsequently disposed of under the 2027 CGT framework, the receipt value (the amount brought into income at the staking date) will serve as the acquisition cost for the purpose of calculating any future capital gain. Losses from crypto transactions, including the disposal of staking rewards at a loss, cannot be offset against other income categories under the incoming rules.

NFT Taxation

South Korea’s crypto tax framework addresses NFTs within the general digital asset classification. 

NFTs held for investment and subsequently sold at a profit will be subject to capital gains tax under the 2027 regime, in the same way as other crypto assets. The 50 million KRW annual threshold will apply, and gains below that level will not attract CGT. Gains above the threshold will be taxed at 20% plus local taxes.

Where NFTs are created and sold commercially as part of a business or artistic enterprise, the proceeds are treated as business or professional income, taxed at the creator’s marginal income tax rate. 

The minting and initial sale of an NFT by its creator is a taxable income event. Subsequent resales on the secondary market by investment holders would be capital events subject to the 2027 CGT regime. 

As of 2026, South Korea has not issued specific guidance addressing royalty streams from secondary NFT sales or the VAT treatment of NFT transactions, and creators operating at commercial scale should seek professional tax advice.

Reporting Requirements

Crypto income currently subject to income tax in South Korea must be reported in the annual individual income tax return, which is due by 31 May of the year following the relevant tax year. The return must include all sources of “other income” from crypto activities, including mining, staking, airdrops, and crypto received as payment for services. Values must be expressed in Korean won using the exchange rate applicable at the time each income event occurred.

When the CGT regime takes effect in 2027, taxpayers will need to complete a schedule for virtual assets in their income tax return, detailing all acquisitions and disposals of crypto assets during the year, the cost bases used, and the calculation of net gains. The NTS has indicated that the reporting framework will require comprehensive transaction-level disclosure, consistent with the detailed record-keeping obligations already in place.

The NTS enforces compliance using advanced blockchain analytics and data obtained through exchange cooperation. Exchanges operating in South Korea are subject to strict Know Your Customer (KYC) and Anti-Money Laundering (AML) requirements, and the NTS can obtain transaction data from registered exchanges.

South Korea participates in international information-sharing frameworks and has aligned its roadmap with CARF for cross-border crypto data exchange. All transaction records must be maintained for at least five years.

Penalties

South Korea’s penalty framework for crypto tax non-compliance is strict. Failure to report or underreporting of crypto income or gains results in penalties of up to 20% of the unpaid tax, plus interest on the outstanding amount. 

The NTS uses blockchain analytics and collaborates with exchanges to identify discrepancies between declared income and identified crypto activity. Local government bodies, including municipal tax offices, have also taken enforcement action, including in cases where crypto assets have been identified and liquidated to recover unpaid tax debts.

For more serious offences, deliberate tax evasion involving crypto can result in fines of up to five times the value of the unreported gains. Custodial sentences of at least one year are possible in cases involving significant deliberate fraud. The FSC has additional powers to suspend or close non-compliant crypto exchanges, which further incentivises platform-level compliance and creates systemic pressure on exchange users to file accurately.

The transition to the 2027 CGT regime is likely to be accompanied by enhanced enforcement activity as the NTS focuses attention on ensuring taxpayers have maintained adequate records from the period before the regime took effect. 

Investors who have been accumulating crypto assets without detailed record-keeping should take steps now to reconstruct their transaction histories as completely as possible, in preparation for the reporting obligations that will apply from 2027.