The IRS provides more information about this in IRS Publication 542, Corporations. Self Employment Tax. Self-employment tax is social security and Medicare tax for people who are self-employed. This tax applies to those who are sole proprietors with a net profit of $400 or more during the year.
The Mekong River originates at the Lasagongma Spring. The spring is located in the high plateaus of Tibet. It is estimated to be 4,350 kilometers long. 1 person found this useful.
Giant Mekong Catfish. The waters of the Mekong River are very murky and make it difficult to track the movements of the fish. In order to determine where the Mekong catfish have been, scientists examined chemical markers called isotopes in bone and muscle tissue of catfish from the Khone Falls region of the Mekong.