Korea Holds Comprehensive Real Estate Holding Tax Deduction at KRW 1.2 Billion: Tax Burden Simulation and Flight to Prime Property

1. Policy Background: Holding the KRW 1.2 Billion Deduction for Single-Home Owners

South Korea's Ministry of Economy and Finance has finalized its stance to maintain the baseline Comprehensive Real Estate Holding Tax deduction for single-home owners at KRW 1.2 billion (assessed official price). While proposals introducing residency tenure conditions or adjusted deduction floors were debated ahead of the regular National Assembly session, authorities opted to preserve the current threshold to curb market disruption. Consequently, single-property owners whose assets are valued up to approximately KRW 1.7–1.8 billion in market value remain exempt from the tax.

2. Tax Burden Simulation Across Assessed Price Brackets

Assuming the statutory fair market value ratio of 60%, the effective holding tax liabilities across various official assessed price brackets are modeled as follows:

• Assessed Price Under KRW 1.2 Billion (Market Value ~KRW 1.7B): The taxable base remains zero, resulting in a full exemption from the holding tax.
• Assessed Price of KRW 1.5 Billion (Market Value ~KRW 2.1B, Prime Seoul Gangbuk Units): After the KRW 1.2 billion deduction, the taxable base is KRW 180 million (KRW 300 million × 60%). Net tax liability after property tax duplication deduction and the special rural development tax hovers around KRW 700,000–850,000 annually.

3. Persistent Multi-Home Disincentives and the 'Flight to Quality' Mechanism

Retaining the KRW 1.2 billion exemption stands in sharp contrast to the multi-homeowner regime, where the baseline deduction remains capped at KRW 900 million alongside higher progressive brackets. An investor holding two non-prime properties with an aggregate assessed value of KRW 1.5 billion faces 2.5 to 3 times the annual tax liability of a single-property holder owning an identical assessed value.

This tax differential is accelerating capital reallocation toward top-tier metropolitan residential assets—a persistent market phenomenon known as the 'flight to prime property'. Latest data from the Korea Real Estate Board underscores this divergence: while Tier-1 districts in Seoul logged weekly price gains above 0.20%, suburban districts remained flat at 0.02%, reflecting deep geographical divergence.

4. Strategic Asset Allocation Takeaways

While the freeze on the tax threshold removes near-term fiscal overhang for high-value single-home owners, stringent macroprudential constraints—including heightened bank loan spreads and stricter stress DSR rollouts—continue to constrain retail liquidity. Market participants should monitor forthcoming National Assembly budget legislation and potential revisions to assessed price realization roadmaps through year-end.