stamp duty shall be paid as required for purchase and sale contracts, processing contracts, construction engineering survey and design contracts, construction and installation contracts, property lease contracts, cargo transportation contracts, storage and transportation contracts, loan contracts, property insurance contracts, technology contracts, property transfer documents, business account books, rights and licenses. Stamp duty is a kind of tax levied on the act of signing books and receiving legally effective certificates in economic activities and economic exchanges. It is named because it uses the stamp attached to the taxable certificate as a sign of tax payment. Stamp tax law is the general name of legal norms to adjust the relationship between stamp duty collection and payment.

Article 5 of the Stamp Duty of the People's Republic of China

The tax basis of stamp duty is as follows:

(1) The tax basis of a taxable contract is the amount listed in the contract, excluding the specified value-added tax;

(2) The tax basis of the taxable property right transfer document is the amount listed in the property right transfer document, excluding the listed value-added tax;

(3) The tax basis of taxable business account books is the total amount of paid-in capital (share capital) and capital reserve recorded in the account books;

(4) The tax basis for securities transactions is the transaction amount.