Legal analysis: you don't have to pay personal income tax to buy a house. Only when buying a second-hand house, the seller usually sells it at a net price, that is, he collects so much money and doesn't pay any tax, so this fee is added to the buyer. The tax bureau can sue for arbitrary tax collection; Other units may declare tax collection to the tax bureau in the name of the tax bureau.

Legal basis: Article 2 of the Individual Income Tax Law of People's Republic of China (PRC), individual income tax shall be paid for the following personal income: (1) income from wages and salaries; (2) Income from remuneration for labor services; (3) Income from remuneration; (4) Income from royalties; (5) Operating income; (6) Income from interest, dividends and bonuses; (7) Income from property lease; (8) Income from property transfer; (9) Accidental income. Individual residents who obtain income from items 1 to 4 of the preceding paragraph (hereinafter referred to as comprehensive income) shall calculate individual income tax according to the tax year; Non-resident individuals who obtain income from items 1 to 4 of the preceding paragraph shall calculate individual income tax on a monthly or itemized basis. Taxpayers who obtain income from items 5 to 9 of the preceding paragraph shall calculate individual income tax separately in accordance with the provisions of this law.