Income from property is subject to income tax based on the location of the property. For private-use property, the imputed rental value is also taxable as hypothetical income. On the other hand, both mortgage interest and the maintenance costs can be deducted from taxable income. Investments increasing the value of the property are not eligible for deductions; however, they are used to calculate capital gains tax in the event that the property is sold. The taxable value of the property (minus the mortgage debt) is also subject to wealth tax. Moreover, individual cantons recognise a separate property tax that can be levied in place of, or in addition to, wealth tax.