Introduction Iran as a developing county is practicing some e-commerce related activities. This article is about the existing practices in Iran with respect to buying and selling online. It covers the following subjects: Advantages and disadvantages of e-commerce Iran’s banking system which supports Online payments What kind of businesses can go online? Where is Iran in international e-commerce competition? What opportunities can e-commerce provide for Iranian business people? Advantages and disadvantages of e-commerce Using the e-commerce new ways for business people and consumers is provided helping them communicate and conduct business easier and faster. There are some advantages and disadvantages in using e-commerce as a way of doing business. Advantages of e-commerce The following list is the number of advantages that can be achieved using e-commerce Business can be conducted all day every day (marcbowles, 2008). As all (or most) of the communications and fund transfers are done electronically, the overall speed of doing business is high (marcbowles, 2008). Using e-commerce, companies have access to global market places and do business with every other company or individual who is connected to the internet (marcbowles, 2008). There are lots of opportunities to find the original manufacturers over the internet and purchase goods and services cheaper or with better quality and support (marcbowles, 2008). As it is stated before, e-commerce is somehow customer self-serviced and part of the job can be done by customers (is referred to as customer outsourcing) (marcbowles, 2008). As e-commerce normally done via internet, application which is used in the website of a company or other applications can be developed efficiently. And also computers have the ability to communicate through internet independent of their platform and operating systems...