Stamp tax, also known as stamp duty or stamp duty tax refers to a form of tax levied on various legal documents, papers, patents, licenses, and transactions. Although the term stamp tax is commonly used, there are several different synonyms that can be used interchangeably. Other names for stamp tax include revenue stamps, excise duty, transfer tax, real estate transfer tax, land transfer tax, and property transfer tax. These synonyms are particularly useful because they clearly indicate what the tax is being levied on and can help differentiate between different types of transactions. While the term stamp tax might be the most commonly used, understanding these synonyms will help clarify the specific type of tax being discussed.