The first requisites for property tax system is that it should distribute tax burdens fairly among taxpayers. Tax equity is most achieved when market value is the basis of the property tax. When there are separate taxes on land and on buildings, it is difficult in practice to estimate the market value of each component accurately. So tax on land and tax on buildings should be integrated one tax and assessed as one good by market value. Then tax rates and tax basis can be simple, that is one of major goals for which taxlaw pursues. And to reconcile revenue surplus or deficit among municipalities, an amendment of revenue sharing is needed.