South Korea

South Korea presents an unusual position: a significant crypto market — over 10 million verified exchange users — operating under a temporary zero-tax framework while a comprehensive tax regime is being prepared. The introduction of a 20% capital gains tax on crypto was legislated in principle but has been delayed three times, most recently to January 2027. The Digital Asset Basic Law, which would provide the broader legal framework, was similarly delayed into 2026. South Korea's Financial Services Commission (FSC) and Financial Intelligence Unit (FIU) maintain active oversight of exchanges, and KYC standards on Korean platforms are among the strictest globally — meaning the data infrastructure for future tax enforcement is already in place. The current window of zero taxation is finite and explicitly transitional.

Core Tax Treatment

As of the time of writing, there is no capital gains tax on cryptocurrency in South Korea for individual investors. Gains realised in 2024, 2025, and 2026 are not taxable. The zero-tax position is not a policy endorsement — it is the result of repeated legislative delays to the implementation of a framework that has been approved in principle. Individuals should not plan on the basis that South Korea will remain a zero-tax jurisdiction indefinitely.

The 2027 Regime

From 1 January 2027 (subject to further legislative change), a 20% capital gains tax will apply to net annual crypto gains above a ₩50 million threshold (approximately USD 36,000 at current rates). This is the "Virtual Asset Income Tax" that has been pending implementation since 2021. The 20% rate applies to the net gain above the threshold — not the full gain — so the first ₩50 million of net gains each year is tax-free. Gains below the threshold are entirely exempt. Crypto-to-crypto swaps are expected to be taxable disposals under the 2027 regime, though the precise implementing rules were still being finalised at the time of writing.

The ₩50M Threshold

The ₩50 million annual exemption is among the most generous tax-free thresholds of any crypto tax regime globally. At current Bitcoin prices, it allows the realisation of gains equivalent to a very significant portfolio increase before any tax is triggered. For most retail investors, the 2027 regime will produce little or no tax liability in most years. For high-volume traders and large holders, the 20% rate on gains above the threshold is a material but not prohibitive burden compared to other developed markets.

Exchange KYC Infrastructure

South Korea's VASP reporting framework requires all exchanges to implement real-name verification and strict KYC. The five major Korean exchanges (Upbit, Bithumb, Coinone, Korbit, and GOPAX) are regulated under the Act on Reporting and Using Specified Financial Transaction Information. This means the National Tax Service (NTS) already has a clear path to transaction data once the tax framework is operative — the infrastructure for enforcement is built before the law takes effect.

Record-Keeping Now

Although no tax return is currently required, building complete transaction records now is strongly advisable. The 2027 regime will require cost basis documentation for all prior acquisitions to calculate taxable gains correctly. Where records are unavailable, taxpayers may be permitted to use 50% of sale proceeds as a deemed cost basis — but this is less favourable than using actual acquisition cost for assets purchased at low prices. Establishing clean records during the current zero-tax window costs nothing and avoids the problem of retroactive reconstruction under time pressure.

Reporting

No crypto tax return is currently required in South Korea. Exchange transaction histories are maintained by Korean-regulated exchanges and can be downloaded for record-keeping purposes. From 2027, an annual tax return including crypto gains above the ₩50 million threshold will be required. South Korea has committed to CARF by 2027, timed to coincide with the tax regime's implementation.