South Korea to Tax Crypto Income From Overseas Exchanges and Self-Custody Wallets in 2027

Highlights:

• South Korea confirms residents will pay tax on crypto income from self-custody wallets and overseas exchanges.
• New crypto tax rules start January 1, 2027, with a 20% rate above KRW 2.5 million.
• Authorities are also reviewing tax treatment for staking, lending, airdrops, hard forks, and promotional crypto rewards.

South Korean residents will face tax on income from crypto held in self-custody wallets or overseas exchanges when the country’s digital asset tax rules take effect in 2027. The government said the location of the assets or the platform used for a transaction will not remove the tax obligation.

According to an August 20 report from Digital Asset, South Korea’s Ministry of Finance and Economy and National Tax Service (NTS) outlined the position in responses to questions from lawmaker Kim Sang-hoon. The authorities said income generated when residents transfer or lend digital assets will generally be taxable, including transactions involving overseas exchanges and personal wallets.

South Korea plans to introduce its crypto income tax on January 1, 2027. Under the current framework, income from transferring or lending digital assets will fall under “other income.” Investors will receive an annual deduction of KRW 2.5 million, while taxable gains above that amount will face a 20% tax rate. The rate can reach 22% when local taxes are included.

据 Digital Asset 报道，韩国财政经济部与国税厅重申，居民通过转让或出借存放在个人自托管钱包以及海外交易所的数字资产所产生的收益，在原则上均属于课税对象，不因资产存放地或交易渠道而有所区分。韩国加密资产税计划归类为其他所得，扣除限额为 250 万韩元，税率为 20%，预计于 2027 年 1 月 1…

— 吴说区块链 (@wublockchain12) August 20, 2026

Self-Custody Wallets and Overseas Crypto Exchanges Remain Taxable

The National Tax Service said the same tax rules will apply regardless of whether residents use a domestic exchange, an overseas platform or a personal crypto wallet. Meanwhile, the Ministry of Finance and Economy said authorities will not distinguish between income generated inside or outside South Korea when applying the rules to residents. Transactions made through personal wallets will receive the same treatment.

However, holding crypto in a self-custody wallet alone does not automatically create taxable income. The rules discussed by the government focus on income generated through activities such as transferring or lending digital assets. Tracking transactions outside regulated domestic exchanges could still create challenges. The NTS acknowledged that users can easily create multiple personal wallets, making it difficult for authorities to identify every unreported transaction.

To address that gap, the tax agency plans to use transaction tracking and analysis tools. For overseas exchanges, authorities also expect to collect information through South Korea’s overseas financial account reporting system and the Crypto-Asset Reporting Framework, or CARF. CARF is an international system designed to help tax authorities exchange information about crypto transactions across borders.

South Korea Reviews Tax Rules for Staking and Airdrops

Authorities are also working on how to handle other types of crypto income. The ministry and NTS said they are reviewing tax standards for staking, lending, airdrops and assets received through hard forks. For crypto distributed free by an exchange, existing income tax rules may apply when the assets qualify as prizes or promotional rewards. In those cases, authorities could classify the value as other income.

The government also reaffirmed its intention to move forward with the 2027 launch. The finance ministry said digital asset income should be taxed under the principle that income should be subject to taxation. It plans to continue reviewing detailed enforcement standards and tax administration before implementation.

The NTS has already completed a tax-source management system and is developing an integrated analysis system. However, both agencies said it remains difficult to provide a reasonable estimate of how much tax revenue the new crypto rules could generate.