The Study on House Tax Equity in Taipei

本研究實證分析台北市2007至2009年不動產交易資料，結果顯示臺北市房屋稅之估價比率大多集中在10%至16%之間，估價比率之中位數為14.79%，從市郊往開發越早的市中心，水平不公平就越嚴重；垂直不公平部分，低價位房屋具有累退性的問題，中高價位房屋則呈現累進性的現象，此外，低價位房屋的估價比率差異程度較大。故房屋稅在進行房屋現值評定時，對於低價位房屋應調降其評估價值，並設法減輕低價位房屋的估價比率差異程度；中高價位房屋現值的評定雖皆具累進性，但許多高價位房屋的估價比率是低於中低價位房屋之估價比率，豪宅稅的課徵似能提高高價位房屋之估價比率，並使房屋稅更加公平，但其效果仍有待觀察。This study investigates house tax equity in Taipei. By analyzing the real estate transaction data from 2007 to 2009, the results show that the median assessment ratio is 14.79% and most of the assessment ratios are between 10% and 16%. The horizontal equity does not hold in Taipei and it gets worse in the downtown. The results also show that the house tax for low-cost houses is regressive. In addition, the variation in the assessment ratios of low-cost houses is the largest. Therefore, the local government should reduce the assessment value and its variation for low-cost houses. Because there are many high-cost houses with lower assessment ratios, the mansion tax may make the house tax more equity by increasing the assessment ratios of high-cost houses. But its effect needs more studies