The Seoul Metropolitan Government announced on 15 September that this September’s property tax assessment totals a record ₩4.8236 trillion, sent out across 4.43 million notices, according to JKN (재경일보), reporting in English. The total is up ₩395.1 billion, or 8.9%, from last year’s ₩4.4285 trillion.
By asset type, land accounts for ₩2.8850 trillion of the bill, while the remaining half of residential property tax — part of which was already assessed in July — accounts for ₩1.9386 trillion. Gangnam-gu carries the largest district-level burden, at ₩1.0777 trillion, or 22.3% of the citywide total. The steepest year-on-year increases were recorded in Seongdong-gu (+15.6%), followed by Songpa-gu (+12.5%), Yongsan-gu (+11.5%), Seocho-gu (+10.9%) and Dongdaemun-gu (+10.9%).
The record total lands about a month after Seoul overhauled how it taxes property based on residency status, a shift that reshaped bills for nonresident owners; this September assessment is the first major test of what that framework means in dollar terms for the city as a whole.
Payment is due by 30 September 2026, and late payment triggers a 3% surcharge. The city said it is offering electronic delivery of notices, QR audio codes for visually impaired taxpayers, and translated payment guides in six languages — English, Chinese, Japanese, German, French and Mongolian — aimed at foreign taxpayers. Shin Ae-seon, head of the Seoul City Tax Department, was quoted urging taxpayers to pay early to avoid congestion near the deadline.
For nonresident owners of Seoul property, the two actionable facts are the same regardless of the broader tax-framework changes: the bill is due by 30 September, and missing that date adds a 3% surcharge on top of an already record-high assessment.
