How to define the tax on the first suite?

According to the Notice of the State Council on Printing and Distributing the Interim Measures for Special Additional Deduction of Individual Income Tax (Guo Fa [2065 438+08]4 1No.),

Article 14 The first home loan refers to the interest rate of the first home loan when buying a house. Taxpayers can only enjoy a first home loan interest deduction. In fact, taxpayers can consult the bank where they borrow money.