오피스텔의 기준시가와 시가표준액에 대한 법적 고찰 및 개선 방안

This study comprehensively analyzes the complex issues within the Officetel taxation system from the perspectives of the Principle of Legality in Taxation and the Official Public Price System. Officetels hold a dual status as both commercial buildings under the Building Act and quasi-residential units under the Housing Act. This dual nature leads to different valuation criteria and taxation methods for national taxes (Official Standard Price) and local taxes (Standard Market Price), causing significant confusion for taxpayers. Specifically, arbitrary discrepancies and valuation method inconsistencies between these two public prices were found to impair Tax Equity and generate administrative inefficiency. Furthermore, the excessive delegation of essential matters concerning tax base calculation from statutes to administrative enactments raises concerns regarding compliance with the Principle of Legality in Taxation and the principle of statutory reservation, issues substantiated by relevant court precedents and Constitutional Court decisions. Drawing insights from case studies in major foreign countries, which highlight efforts to differentiate valuation for taxation purposes from market value and enhance transparency in the valuation process, this study proposes the following policy recommendations. First, it is necessary to integrate or strengthen the linkage between the Official Standard Price and the Standard Market Price to ensure consistency in public price assessment and enhance taxpayer predictability. Second, legislative reforms are urgently needed to ensure consistency in the functional classification of Officetels. This includes clearly stipulating the criteria for determining actual use in statutes or enforcement decrees, and actively considering the design of a separate tax system that explicitly incorporates the concept of “quasi-residential units" from the Housing Act into tax law, thereby reflecting Officetel's unique characteristics. Third, the expansion of real transaction price-based taxation requires the establishment of a transparent and reliable information system as a prerequisite, followed by a phased introduction. Fourth, in conjunction with the long-term direction of real estate tax system reform, it is crucial to ensure tax neutrality and achieve fair taxation by improving the real market value reflection rate of public prices and introducing tax base calculation methods that reflect actual tax-bearing capacity. These proposed improvements will alleviate the complexities of the Officetel tax system, protect taxpayer rights by enhancing predictability and clarity in accordance with the Principle of Legality in Taxation, and ultimately contribute to improving the efficiency and reliability of tax administration.