The Cabinet on Sept. 29 signed enforcement decrees that, from Oct. 1, shrink the disposal window for temporary two-home owners in regulated areas from three years to two—a change that matters most for households upgrading inside Seoul, Seongnam, or other overheated districts where buying before selling is routine rather than speculative.
What the decrees change
Under rules the Ministry of Economy and Finance packaged as follow-up to the August tax-reform outline, a family that already owns in a regulated zone and acquires another home in the same class of area keeps capital-gains and comprehensive real-estate holding tax relief only if it unloads the previous residence within two years, not three. The relief bundle is familiar: capital-gains exemption on transfer values up to 1.2 billion won, long-term holding deductions, the 1.2 billion won comprehensive holding-tax basic deduction, and credits tied to age and tenure.
For capital gains, the shorter clock applies when the new home is purchased on or after Aug. 4, 2026, and the old home is sold on or after the Oct. 1 effective date. For comprehensive holding tax, the two-year frame bites on acquisitions after the same August cutoff when tax liability is established as of June 1, 2027. Anyone who bought or signed a contract with a deposit paid before Aug. 3 keeps the legacy three-year path.
Why we supported tightening—until now
InfoHandle Editorial has argued that extended grace periods in regulated zones were defensible when they helped genuine movers avoid punitive multi-home surcharges during thin inventory cycles. The trade was explicit: time to sell without being treated like a permanent landlord. That bargain loses credibility when low-rate mortgages and tight supply turn “temporary” second homes into rented arbitrage for years.
Shortening the window to two years nudges owners toward listing sooner, which is what policymakers want as they pair tax sticks with rental-supply programs. It also aligns the tax clock with typical Korean resale cycles in hot districts, where three-year holds often coincided with expecting another price leg up.
Where the policy still wobbles
The grandfather clause for Aug. 3 contracts is necessary legally, but it invites forum shopping: rush deposits before deadlines, then claim the old timeline. Enforcement depends on clean contract timestamps and deposit trails—areas where disputes already clog tax tribunals.
Separately, the same Cabinet package sunsets several rental-business sweeteners, including purchase-rental surtax exclusions with a 2027 year-end cap and the end of mutual-benefit rental residency waivers this year. Movers face a narrower toolkit at the same moment the disposal clock tightens. That is coherent if the goal is to shrink tax arbitrage; it is harsh if the goal is to increase tenant supply without building more units.
Who should act—and how fast
Households on a three-year plan who bought after Aug. 4 should model a two-year sale scenario before October listings dry up around Chuseok. Tax advisers need to reconcile capital-gains timing with comprehensive holding-tax assessment dates, which do not always move in lockstep.
Lawmakers should watch whether the National Assembly tries to reextend grace periods in an election year; the executive branch has now locked the administrative rule. Local governments should publish plain-language timelines for regulated-zone maps so owners do not confuse speculation zones with adjustment-target areas.
Our bottom line
We do not mourn the three-year escape hatch in regulated zones; it had become a holding pattern for price bets dressed as moves. We do insist that two years must come with predictable listing data and enforcement that treats identical contract facts the same. Without that, the reform taxes paperwork skill more than excess housing stock—and leaves genuine movers paying for speculators’ delays.