The published price rises 9%, the holding tax rises 14.5%

Published prices for apartments rose 9.13% on a national average in 2026, a wide move against the 3.65% of 2025. The realisation rate held at 69%, the same as 2025, so what the figure reflects is the movement in market prices.

That tax rises when the published price rises is well known. But they do not rise by the same amount. The tax rises by more.

Let us work it through. Take a one-home household whose published price rose from ₩1.2B to ₩1.31B, exactly 9.13%.

Why this happens is the point of this episode. The answer lies in the deduction being fixed.

So the amplification is greatest near the edge of the deduction. A home whose published price already sits well above the deduction line sees a gentler rate of increase. Conversely, a home that sat just below the line and has now crossed it feels it most, because a tax it never paid has appeared.

The property tax side has a similar structure. The reduced rates for a one-home household apply only up to a standard market value of ₩900M, and a published price rising past that line loses the concession in its entirety. This example starts at ₩1.2B so it does not arise, but for homes near ₩900M that cliff bites first.

And it is not only tax that the published price moves. There is one important distinction to draw here, though.

Property enters health insurance contributions only for regional subscribers. A regional subscriber's monthly contribution is the part based on income plus the part based on property contribution points, and housing goes into that property. Employee subscribers, by contrast, are assessed on remuneration, so a rise in the published price does not by itself raise the contribution paid through work.

And even then the measure of property is the property tax base under the 지방세법, one step further on from the published price, not the published price itself. The points and amounts are set out in schedules and are revised often, so this page does not cover them. Check with the National Health Insurance Service.

Some cautions. First, 9.13% is the national apartment average. Individual homes move differently. In the same 2026, standard land rose 3.35% and standard houses 2.51%, a wide gap against apartments. Saying 'published prices rose 9%' is accurate only if you say it is on apartments.

Second, 9.13% is the figure before objections were taken into account. Objections were received from 30 April to 29 May 2026, with adjustment and publication announced for the end of June. There has been no press release on the outcome of those adjustments, and the final published price for an individual property has to be looked up on the Real Estate Public Price Notice service.

Third, the comprehensive tax figure reflects the property tax credit and the tax credits for a one-home household. It assumes property tax was paid at the standard rates, though, so an area with relief by ordinance may differ.

Fourth, there is a cap on the increase in the burden. It cannot exceed 150% of the equivalent total tax for the preceding year, so the actual increase may be smaller than the calculation.

So: start by checking on the Real Estate Public Price Notice service how far your own published price has risen against 2025. Then see whether that figure sits near the comprehensive tax deduction lines of ₩900M or ₩1.2B, or the ₩900M ceiling for the property tax concession. Near a boundary, it is worth calculating.