Sur taxes is a term that refers to an additional tax or levy imposed on a particular good or service. There are several synonyms for the term sur taxes such as additional taxes, extra charges, surcharges, and levies. These terms usually indicate that the amount of tax being added is not included in the original price and must be paid separately. Other synonyms for sur taxes include fees, tariffs, duties, and assessments. These terms can be used interchangeably to describe any additional costs that are being added to the original price of a good or service. It is important to be aware of these terms when making any purchases to ensure that you are fully aware of the total cost.