Academics Warn Korea's Property Tax Overhaul Could Squeeze Rental Supply

The South Korean government’s newly unveiled real estate tax overhaul is drawing warnings from academic economists that its costs may land not on the multi-homeowners it targets, but on the tenants it is meant to leave untouched. At a discussion session hosted by the Korean Association of Public Finance, scholars cautioned that the plan could contract the supply of rental housing and, in doing so, raise the housing burden on renters — with some raising the prospect of a jump in monthly rents.

A Tax Aimed at Owners, Priced Into Rents

The core of the academics’ concern is a familiar mechanism in housing economics: private landlords supply the bulk of Korea’s rental stock, and most of those landlords are, by definition, owners of more than one home. A tax regime that raises the cost of holding multiple properties therefore changes the economics of being a landlord. If owners respond by selling rental units, converting them to owner-occupancy, or declining to add new ones, the rental supply shrinks even if the total housing stock does not.

Scholars at the session argued that a thinner rental market would shift bargaining power toward landlords who remain, allowing holding costs to be passed through to tenants. That is the channel behind the warning that monthly rents could climb — an outcome that would concentrate the reform’s burden on households that own no property at all.

The Speculator Premise Under Challenge

A second line of criticism was directed at the plan’s underlying assumption rather than its mechanics. Participants objected that the overhaul is designed as if owning multiple homes were inherently speculative, leaving no room for the role multi-homeowners play as suppliers of rental housing. On this view, a tax framework that treats every additional property as an object of speculation risks penalizing the very activity — leasing homes to tenants — that keeps the rental market functioning.

This is not an argument that no speculation exists in Korean housing, and the scholars’ comments should be read as a caution about incentive design rather than a forecast. But the critique implies a policy dilemma: instruments blunt enough to discourage speculative accumulation are often blunt enough to discourage ordinary landlording as well.

The Stakes for Renters

Whether the warnings materialize will depend on details of the final legislation and on how owners actually respond — questions the session’s participants raised rather than settled. What the exchange makes clear is that the reform’s political framing, centered on multi-homeowners, does not fully capture its economic incidence. If the academics are right, the households with the most at stake in the coming debate are renters, whose exposure runs through supply and pricing rather than through any tax bill of their own. That tension between the plan’s target and its likely point of impact is now squarely on the table as the overhaul moves forward.