legal ground
Article 2 of the Individual Income Tax Law
Income from property transfer. Personal income tax payable.
Article 3 of the Provisional Regulations on Deed Tax
The deed tax rate is 3-5%. The applicable tax rate of deed tax shall be determined by the people's governments of provinces, autonomous regions and municipalities directly under the Central Government in accordance with the actual situation in the region within the range specified in the preceding paragraph, and reported to the Ministry of Finance and State Taxation Administration of The People's Republic of China for the record.
Article 9
A taxpayer shall, within 10 days from the date when the tax obligation occurs, file a tax declaration with the deed tax collection authority where the land and house are located, and pay the tax within the time limit approved by the deed tax collection authority.